The 428 engines have far superior cylinder heads (bigger valves and ports, dfferent valve angle) compared to the 421 engines. With some hunting, you can likely find a similar bargain. Mild 428 Pontiac built by Butler Performance. Its only worth that much if the block numbers match a car you already have, and it will raise the value of that car alot- otherwise its worth $1600-1800 for the combo. In 1970 this ban was lifted and thats when you saw the 454 in the chevelle ss, the 455 in the Buicks Pontiacs and Olds muscle cars. 00 ENGINE TYPE Water-cooled V-8, cast iron block and head. The 455 SD is not the most powerful engine Pontiac built, due to lower compression. All totaled, this combination is worth 659 horsepower and over 600 lb-ft of torque on the dyno. oil and weight for 69 Firebird. 428 Engine Specifications. The 428 was Pontiacs top engine for 3 short years- 1967-9. Pontiac Date Code on the Cylinder head Reggie Horning. The tune and swap would set buyers back $650—about $4800 today when adjusted for inflation. I found this 1974 400 locally for $250 and confirmed that it retains its original 4. Get the best deals for pontiac 421 complete engine at eBay. Camshaft Thrust Plate: Engine Oil: 15 ft-lbs. A History Lesson in Pontiac V8 Power. The value can range from not a lot more than scrap for the base model engine, to very valuble indeed for the top hi performance version. The standard motor for the 1968 Grand Prix was a 4-barrel 400 rated at 350 horsepower. 65 Top Rated Seller Buy It Now classicenginesupply (45,751) 99. 428 pontiac engine for sale. March 27, 2016, 01:24 PM. Of course, Royal Pontiac didnt settle with the factory rating and tuned the 428 to around 425 hp. Crank: 1969 428, nodular iron, standard journals. PONTIAC ENGINE BOLTS KIT GTO V8 326 350 389 400 421 428 455 STAINLESS STEEL HEX Brand New C $78. The 428 will grunt almost like a 455, and spin like a 400, but keep it under 6000rpm. Only about 400 were produced before the fuel injection system was quietly dropped. I think the motor could be worth a lot more to some guy looking for 68 428But, most of demand seems to be for guys looking for a nice street motor for their poncho. 00 slingerland420 (787) 100% Buy It Now Free local pickup 97 watchers Sponsored Pontiac V-8S 326 301 350 389 400 421 428 455 Engine Max Performance Manual (For: Pontiac) Brand New $29. Rotating Assemblies & Stroker Kits. Pontiac 400 Performance Crate Engine New Rebuilt!!! $7,250. Deck Height: 10. The value can range from not a lot more than scrap for the base model engine, to very valuble indeed for the top hi performance version. There is no displacement stamp for 421, 389 or 326 blocks. Id think generally the 428 has less value now than when the guy rebuillt if 15 years agothe guy might have spent say 3500 to rebuild it 15yrs ago. The bore is the same as the 400 at 4. 455 - This engine has to be at. High Performance Pontiac Engines Pricelist. I drive it mainly on the street but it is driven hard. PONTIAC ENGINE BOLTS KIT GTO V8 326 350 389 400 421 428 455 STAINLESS STEEL HEX Brand New C $78. To know, for sure, what engine you have, you need the four digit date code, from the distributor pad, along with the two letter engine code, on the front of the right cylinder bank, between the. If it’s as good as claimed the asking price reflects the rarity and condition. Here in the Charlotte area, they go for about 2K, maybe 2. At any rate the 428 is a fairly rare and very desirable engine. Trans is a turbo 400 with shift kit and 2800 stall. In 1969, Grand Prix buyers could choose from two engines and four power levels. There were multiple versions of the engine produced each year of it manufacture. The 428 will reve a little more than the 455, thus miving its HP and torque curve up slightly. Pontiac 455 Engine Rebuilt Balanced Performance FORGED RODS Refurbished $7,500. I can see $1,200- $1,400 for the low performance version as a reasonable number. What makes this car “rare”? The engine is the big block 421 CID. 1969 NASCAR Pontiac Grand Prix & 428 Ram Air V Engine Start …. Pontiac’s 428 was a sneak attack in the muscle car horsepower …. Pontiacs 428 was found primarily in full-size sedans and coupes, and when the mid-size GTO was up for a replacement motor the companys engineers created the 455 by boring the Super Duty engine to 4. The GTO did not come with a 428 because of the ban GM sent down to the divisions on 400ci or less on there intermediate sized cars. I purchased what I thought was a 428 motor that had been stroked to 455. Here in the Charlotte area, they go for about 2K, maybe 2. Engine type: Pontiac V8 428 Cu: Displacement: 7. Of course, Royal Pontiac didn’t settle with the factory rating and tuned the 428 to around 425 hp. It also had the largest engine with the most available horsepower,” he says. Fully disassembled and tuned on motor during break-in, with 1 power cone spacer, gaskets and stainless steel studs/nuts. I have identified the block is indeed a 1970 428, now how can I tell if the engine has been stroked. The 428 4-bolt engine has some cache with the Pontiac faithful. On 1968–69 428 blocks you will find “428” stamped between the freeze plugs. I purchased what I thought was a 428 motor that had been stroked to 455. Pontiac V8 Engine Codes and Specs. The value of 455,s is very dependant on which version the particular engine is. To someone that was looking for a correct engine, it would probably be worth more than to someone just want to replace a 400 in his street/strip car, but even in that situation, it could be worth a sizable amount. Customize and complete your Pontiac crate engine with some of the following options, all of which are available and installed during in-house engine break-in: 750 cfm Quick Fuel Carb. 00 or Best Offer 79 watching Pontiac 1967 WW400 GTO RARE 4SPD Rebuilt Short Block. Oil Pump Cover Bolts: Engine Oil: 15 ft-lbs. From 1959 on, engines displacing between 326 and 400 inches contained a main journal diameter of 3 inches, while 421-, 428-, and 455ci engines featured 3. Where are the Pontiac >Need help with this Pontiac 428 build. The rear is a Chevy 12 bolt posi with 4. 4 Jaw Chuck Premium Member Joined Mar 18, 2002 9,699 Posts #3 · Oct 21, 2014 Find a good 400 and complete the restoration to stock, sell the 428 block to someone willing to deal with the hassle of a cracked block if its worth anything. The 428 4-bolt engine has some cache with the Pontiac faithful. 4K subscribers Subscribe 10K views 4 years ago This 428 will be turning heads and swooning damsels with its almighty. Agree with Mark, value should be somewhere in the area of a thousand dollars. The bore and stroke combination comes to 428 ci, a displacement identical to some of the most powerful factory Pontiac engines. This blue 1963 Pontiac Grand Prix is for sale here on craigslist near Pittsburgh, Pennsylvania for $7,500. One used for normal 428, the 428 Police Interceptor, and the 428 CJ before 12/26/69. pontiac 421 complete engine for sale. It was one of the largest engines Pontiac produced, but it was used more to power big cars such as the Bonneville, and not as much for performance cars such as the Firebird. Tested: 1968 Pontiac GTO 428 / Royal Bobcat. Any 1968–1972 cast-iron 4-barrel makes an excellent performance piece for Pontiacs operating up to 5,500 rpm or so. There was also an optional 428-cid V-8 at 370 hp, and a high output 428 engine with 390 hp. As you look there you may find a pretty simple clue that will end your engine identifying search. “I wanted the performance-oriented SJ package because it contained the 428 engine, and I opted for the 428 H. Some dealerships had an option to swap the 389 to a 421 from 1964-1966. Oil Pump Bolts: Engine Oil: 30 ft-lbs. There was also an optional 428-cid V-8 at 370 hp, and a high output 428 engine with 390 hp. The value of 455,s is very dependant on which version the particular engine is. 28K subscribers the engine we gonna get next year a little plan,. pontiac 428 complete engine for sale. Pontiac 400 or 455 Block for Performance Use>Picking a Pontiac 400 or 455 Block for Performance Use. The Order Process Returning to McKenzie Pontiac in December 1968, Butch began the order process for a new ’69 Grand. 12″ and it has the same 4″ stroke that the 421 did. The Pontiac 455 V8 was The GTO and Firebird Brands Last Big …. I have a 1969 428 YH engine Im pulling out of. The 428 was Pontiacs top engine for 3 short years- 1967-9. The 428 is a 421 bored out to 4. On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block. 040 over with #62 heads, 274 Comp Cam Extreme energy with Edelbrock Performer RPM and 750 Holley with vac/secondaries. The fuel-injected engine became an option on any Pontiac model, carrying a staggering price tag of $500 (almost 15% of the cars base price). The 428 has remained one of the favorite Pontiac engines for racers and. they arrived at 428 with a different bore and stroke. The bore and stroke combination comes to 428 ci, a displacement identical to some of the most powerful factory Pontiac engines. Butler uses only high quality crankshafts, rods, and pistons in their rotating assemblies as well as stocks many assemblies from brands such as Eagle, Scat, Callies, and more. For a mere $650, exchange, Royal will snake out that overworked little engine in your GTO and slide in the 428, all prepared for action. All standard Pontiac cooling passages are present No Timing cover issues MR-1 Cast Iron Pontiac block $3,595 FOB via truck freight MR-1A Aluminum Pontiac block $5,195 FOB via truck freight More information. I initially planned to order a four-speed manual transmission, but the salesman talked me out of it, saying that the manual stick would hurt resale value, and that air conditioning wasn’t available with it. Customize and complete your Pontiac crate engine with some of the following options, all of which are available and installed during in-house engine break-in: 750 cfm Quick Fuel. the RPM 5140 forgings are adequate. And now, speed-crazed sports fans, Roy­al Pontiac has. Still, they are an unusual full-size cruiser, and this one on eBay is even more unusual due to its engine. I say lower your sights on the build to make it more budget-friendly and keep it. Cam Sprocket/Timing Gear (upper) Thread Locker: 45 ft-lbs. For a mere $650, exchange, Royal will snake out that overworked little engine in your GTO and slide in the 428, all prepared for action. In the original 1967 version, the 428s closed chamber cylinder heads had a 14-degree valve angle. It was rated at 310 hp (231 kW) @ 4800 rpm and 400 lb⋅ft (542 N⋅m) @ 3,000 rpm on 10. The 428 has remained one of the favorite Pontiac engines for racers and hot rodders and, are always one of the most sought after for a build up. Unusual Pontiac Grand Prix With Top. 030 inch, which boosted displacement to 400 and 428 ci, respectively. There were multiple versions of the engine produced each year of it manufacture. they arrived at 428 with a different bore and stroke. Customize and complete your Pontiac crate engine with some of the following options, all of which are available and installed during in-house engine break-in: 750 cfm Quick Fuel Carb. It is the weak link in the chain. Not cheap, but it was an easy way to make sure you had one of the quickest cars on the street. The original owner order this classic with the Code YK 428ci HO V8 engine. The Eagle H-beam is considered the best for the money. 030 inch, which boosted displacement to 400 and 428 ci, respectively. Pontiac GTO 428 Performance Engine By. V-8 re­moved and the full, top-of-the-line 428-incher inserted—with enough fiddling in­side the replacement engine to bump the output up some. Engine Oil: 55 ft-lbs. Per chance, the final displacement. I do have a comp cams XE 262 in there, how would the car idle/perform with this cam in a 455 vs 428?. After that date Ford offered one crankshaft for 428 CJ. 8000 rpm Pontiac Engine Build The Plan! Part 1 13,135 views Jan 18, 2019 197 Dislike Share Save Hansen Racing 9. Id think generally the 428 has less value now than when the guy rebuillt if 15 years agothe guy might have spent say 3500 to rebuild it 15yrs ago. To maintain its image as a performance leader, it increased the bore diameter of its 389- and 421ci by 0. The first 428 was rated at 375. Though I agree with most of what bigwild says, the torker II is not really a good intake for street/strip use. Re: 1968 GTO w/ Pontiac 428ci. Been reading about sleeves and most agree its okay (as long as crack not near bottom of bore). Because it was designed for larger cars, it had a tank that could hold 26 gallons. 95 Top Rated Seller Buy It Now alloyboltz (40,278) 100% from United States 373 sold Sponsored New Block Hardware & Head Dowel Kit Pontiac 301 326 350 389 400 421 428 455 Brand New C $25. Mild 428 Pontiac built by Butler Performance Butler Performance 18. When selecting a block for your build, a complete running engine makes a suitable candidate. To be honest it is often the engine most often overlooked even by those in the Pontiac community. The vehicle’s curb weight of 4,233lbs is about what you might expect from a car of this type and size. In 1967 there was a 360 and 376hp version. 69 GTO convertibles been sitting for 7 years. For the ’68 model year, option code WG got you a 428 cubic-inch, 375-horsepower V8 with a 4-speed manual transmission. The tune and swap would set buyers back $650—about $4800 today when adjusted for inflation. pontiac 428 engine complete for sale. Just be sure the exhaust crossover passage is compatible with your particular. Only 195 WG code cars left the factory in 1968, and of those, only 77 had. Whether your vehicle is a GTO, Fire Bird, Trans Am, Lemans, or a timeless classic, here at Proformance Unlimited we are here to help design and build the eng. Id think generally the 428 has less value now than when the guy rebuillt if 15 years agothe guy might have spent say 3500 to rebuild it 15yrs ago. 5:1 engine is approximately $8,500 and requires no core from you. A GTO with the standard, puny, 400 cu. How Much Is a 1968 pontiac 428 Engine worth?. 1969 Pontiac Grand Prix SJ 428 HO. The top 400-cid V8 was a four-barrel edition for the GTO that had the same 360-hp rating as the previous year’s 389 Tri-Power version. #1 its probably got a steel crank. 08: Layout: front engine, rear wheel drive. It also has the optional Hurst four-speed transmission. If youre after big bore power you could find a 68-70. 5K with 4-bolt mains and the better heads - which in my opinion is high. The 428 will grunt almost like a 455, and spin like a 400, but keep it under 6000rpm. If youre after big bore power you could find a 68-70 400 long block for $500-800 and stroke that for $2k. If you go with the basics, of 5140 RPM forged rods & SP forged pistons, with a Summit cam kit, and a good valve job, dont think you can have it built correctly, for under $3000, unless you do some of the assembly work yourself, or have a friend wholl help you, for free. com Pontiac 428>BangShift. For a mere $650, exchange, Royal will snake out that overworked little engine in your GTO and slide in the 428, all prepared for action. Picking a Pontiac 400 or 455 Block for Performance Use. Five Of The Rarest Pontiac Grand Prix Models Ever Made. Windage Tray: Engine Oil: 15 ft-lbs. pontiac 455 complete engine for sale. The 400-cid Pontiac V8 that bowed in 1967 Pontiacs was a bored-out version of the 389 and a new 428 was a bored-out 421. PONTIAC 428 YH 1969 Hi Performance Balanced Engine FREE professional crating and. How To Interpret The 1969 Pontiac 428 HO Engine Codes. There are several diferent head castings used along with other parts. From 1968 to 1969 only he 428 had the engine size stamped in between the freeze plugs. Oil Pan: Engine Oil: 12 ft-lbs. Rocker Arm Nuts (Non-Adjustable Rockers) Assembly Lube: 20 ft-lbs. Pontiacs 428 was a sneak attack in the muscle car. “I wanted the performance-oriented SJ package because it contained the 428 engine, and I opted for the 428 H. I think the motor could be worth a lot more to some guy looking for 68 428But, most of demand seems to be for guys looking for a nice street motor for their poncho. 55 will just waste the power youll be making, along with the stall speed. The Order Process Returning to McKenzie Pontiac in December 1968, Butch began the order process for a new ’69 Grand Prix. 1964-1974 Tempest, Lemans & GTO Engine Compartment. The engine had 472 foot pounds of torque, which is equal to 3,200 RPMs of pulling power. Engine Theory by Wallace Racing. Still, they are an unusual full-size cruiser, and this one on eBay is even more unusual due to its engine. From 1968 to 1969 only he 428 had the engine size stamped in between the freeze plugs. The original owner order this classic with the Code YK 428ci HO V8 engine. 428 ENGINE SIZE LICENSE PLATE FITS FORD PONTIAC COBRA J Brand New C $25. It is also the SAME rod used in all other full-sized Pontiac V8s. In the original 1967 version, the 428’s closed chamber cylinder heads had a 14-degree valve angle. In the original 1967 version, the 428’s closed chamber cylinder heads had a 14-degree valve angle. The Pontiac 428 cubic inch engine was used only from 1967-69. 00 ENGINE TYPE Water-cooled V-8, cast iron block. Pontiac 455 Engine Rebuilt Balanced Performance FORGED RODS Refurbished $7,500. What Is A 428 Pontiac Engine WorthThe 428 was rated with 260 horsepower at 4,600 rpm, and that could be boosted to 270 with some factory modifications. The GTO did not come with a 428 because of the ban GM sent down to the divisions on 400ci or less on there intermediate sized cars. Of course, Royal Pontiac didn’t settle with the factory rating and tuned the 428 to around 425 hp. The 400-cid Pontiac V8 that bowed in 1967 Pontiacs was a bored-out version of the 389 and a new 428 was a bored-out 421. It also had the largest engine with the most available horsepower,” he says. The engines feature a cast-iron block and head and two valves per cylinder. 17 shipping from United States. 1969 Pontiac GTO 428 Performance Engine By Proformance Unlimited crateengines 24. #2 its probably a 4 bolt main #3 if youre hurting for cash, you could probably sell what you have and buy a new motor with cash left over for goodies. 1969 428 YH Engine Value. One point lost in compression equals 50-lbs. 200 big end, adjust index (degrees apart of the. The engine had 472 foot-pounds of torque, or pulling power,. A stock 428 rod is a casting, not a forging. The extra cubes were added to mask the fact that Tri-Power options were no longer offered. Per chance, the final displacement was derived by the bore and. When I bought my 67 goat, it had a 428 engine with a 1965 tri-power installed. Engine block and cylinder heads were cast at Saginaw Metal. The least powerful engine was a 400-cid V-8 at 265 hp, but most cars were delivered with the standard 350-hp 400-cid motor. my dad had a 70,000 mile 350 olds in great condition and he bent the pushrods in it doing 5000 RPMs. Buyers could spec a delete-option 400 2-barrel or move up to two 428s. As you look there you may find a pretty simple clue that will end your engine identifying search. and weight for 69 Firebird. From 1959 on, engines displacing between 326 and 400 inches contained a main journal diameter of 3 inches, while 421-, 428-, and 455ci engines featured 3. To someone that was looking for a correct engine, it would probably be worth more than to someone just want to replace a 400 in his street/strip. If you want a low mileage, excellent condition, highly optioned, full sized performance Pontiac this is good one. The 428 is desired if it has the 4-bolt main caps. 95 shipping 99 sold Pontiac 1970 400 YZGTO Ram Air lll Rebuilt short block forged pistons 068 cam $6,395. For 1967 only Pontiac called this engine the Quadra-Power 428. How to identify Pontiac engine blocks. 12-ci bore after removing the cylinder heads. 8000 rpm Pontiac Engine Build The Plan! Part 1. jordan, I cant give you a dollar value, as it is worth a different amount to each person that would want it. Pontiacs 428 was a sneak attack in the muscle car horsepower wars. 1969 NASCAR Pontiac Grand Prix & 428 Ram Air V Engine Start on My Car Story with Lou Costabile Lou Costabile 118K subscribers Subscribe 563 41K views 6 years ago If you. 2000 PONTIAC GRAND PRIX Engine ECM Control Module 09380717 OEM (R 428) Pre-Owned. This blue 1963 Pontiac Grand Prix is for sale here on craigslist near Pittsburgh, Pennsylvania for $7,500. The engine had 472 foot pounds of torque, which is equal to 3,200 RPMs of pulling power. A stock 428 rod is a casting, not a forging. The 428 is a great engine but it does not hold the allure of a 421SD or a Ram Air engine. 1K subscribers Subscribe Like Share 13K views 3 years ago Whether your vehicle is a GTO, Fire Bird, Trans. The top 400-cid V8 was a four-barrel edition for the GTO that had the same 360-hp rating as the previous year’s 389 Tri. 0 l (428 ci / 7014 cc) Power: 380 ps (375 bhp / 280 kw) @ 5000 rpm: Torque: 597 Nm (440 lb-ft) @ 3200 rpm: Power / liter: 54 ps (53 hp) Power / weight: 209 ps (206 bhp) / t: Torque / weight: 328 Nm (242 lb-ft) / t: Transmission: 4 Speed Manual (3. This brute of a motor should be capable of producing 376hp, which finds its way to the road via a 3-speed Turbo Hydramatic transmission and a Saf-T-Track rear end. The 428 is desired if it has the 4-bolt main caps. The 428 has remained one of the favorite Pontiac engines for racers and hot rodders and, are always one of the most sought after for a build up. Engine type: Pontiac V8 428 Cu: Displacement: 7. All you need is about 2200 stall, 2. Pontiac engine blocks – Tin Indian Performance. All totaled, this combination is worth 659 horsepower and over 600 lb-ft of torque on the dyno. The least powerful engine was a 400-cid V-8 at 265 hp, but most cars were delivered with the standard 350-hp 400-cid motor. Block castings are different, but not a big deal. See more Reply Save Like 6 6567GTO · #14 · Sep 10, 2003 Good point on the need for good bolts Grusome. On 1968–69 428 blocks you will find “428” stamped between the freeze plugs. 1969 Pontiac GTO 428 Performance Engine By Proformance Unlimited crateengines 24. We have a great online selection at the lowest prices with Fast & Free shipping on many items!. It was renamed 428 HO for 1968. The 428 was Pontiacs top engine for 3 short years- 1967-9. This engine was first offered in 1967 as the top engine option in full-size Pontiacs. These assemblies can be purchased factory. The 428 engine was an affordable and powerful motor, and it featured a big block V8 design with a bore and stroke of 4. Discussion Starter · #1 · Oct 20, 2014. In 1969, Grand Prix buyers could choose from two engines and four power levels. You can easily build a 455 out of the 428 if your heart desires. 0 l (428 ci / 7014 cc) Power: 380 ps (375 bhp / 280 kw) @ 5000 rpm: Torque: 597 Nm (440 lb-ft) @ 3200 rpm: Power / liter: 54 ps. Pontiac 400 Performance Crate Engine New Rebuilt!!! $7,250. The GTO did not come with a 428 because of the ban GM sent down to the divisions on 400ci or less on there intermediate sized cars. 58 Top Rated Plus Buy It Now midlifeclassiccarbooks (76,186) 99. 30k Mile 1967 Pontiac Grand Prix 428 HO. A 400 Pontiac is not a torque maker. jordan, I cant give you a dollar value, as it is worth a different amount to each person that would want it. The Pontiac performance folks I know speak of it in hushed tones. The 1964-1974 Pontiac Tempest, Lemans & GTO. To maintain its image as a performance leader, it increased the bore diameter of its 389- and 421ci by 0. 550 to 650 lb (250 to 290 kg) The Pontiac V8 engine is a family of overhead valve 90° V8 engines manufactured by the Pontiac Division of General Motors Corporation between 1955 and 1981. Where are the Pontiac gurus??. Customize and complete your Pontiac crate engine with some of the following options, all of which are available and installed during in-house engine break-in: 750 cfm Quick Fuel Carb. The fuel-injected engine became an option on any Pontiac model, carrying a staggering price tag of $500 (almost 15% of the cars base price). Since that time it has been used as a performance engine in several cars by drag. In 1968 there was 375hp and 390hp. A GTO with the standard, puny, 400 cu. If you go with the basics, of 5140 RPM forged rods & SP forged pistons, with a Summit cam kit, and a good valve job, dont think you can have it built correctly, for under $3000, unless you do some of the assembly work yourself, or have a friend wholl help you, for free. It was rated at 376 bhp in 1967 and 390 bhp in 1968 and 1969. The 428 was Pontiacs top engine for 3 short years- 1967-9. Limelight Discussion Starter · Jun 6, 2021. Need help with this Pontiac 428 build. Add to quote; Share Only show this user. From 1970 to 1979 The 350, 400, and 455 engine size is stamped on the left front of the block. The motor is a Pontiac 400 bored. According to conceptcarz, there were only 5,157 Grand Prix cars with a four-speed made in 1963. Discussion Starter · #1 · Oct 20, 2014. The standard motor for the 1968 Grand Prix was a 4-barrel. When selecting a block for your build, a complete running engine makes a suitable candidate. Since Pontiac blocks have been known to split up the middle over 700 hp, at 659 there is a. BanditT/A, you should probably keep it around 4500, 4800 RPMs. 65 racecityretro (16,931) 100% Buy It Now +C $14. In hindsight, we can see that GM’s maintenance of 5 divisions long after it became impractical led to much true badge engineering and wasteful redundancy. And a 428 makes torque, but nothing like a 455. Its 200hp rating matched that. In 1968 there was 375hp and 390hp available, and in 1969 you could go 360, 370 or 390hp off of the menu. The 428 is a 421 bored out to 4. Reply Save Like B BanditT/A Discussion Starter · #15 · Sep 10, 2003. 1969 Pontiac GTO 428 Performance Engine By. Taylor said the 428 engine is very efficient and has a good bore-to-stroke ratio. Motor mounts: From 1959 to 1969 the blocks have only 2 mount holes From 1970 to 1976 the blocks have 5 mount holes. As mentioned, Pontiac introduced its 350 cubic-inch engine for the 1968 season and carried its basic critical dimensions--such as its 3. The fact that Pontiac fitted different engines and has a slightly different transmission selection than the Camaro made it a bit more than badge – engineering. All 1968 428 blocks were produced with four bolt main caps, but some cast for 69 only had two bolt caps, which would devalue it a little, in most cases. PONTIAC 428 YH 1969 Hi Performance Balanced Engine FREE professional crating and. Pontiac Grand Prix 428 HO specs, 0. Trust me on that, you arent diving a chevy, you dont need more gear like a 350 mouse does. Its only worth that much if the block numbers match a car you already have, and it will raise the value of that car alot- otherwise its worth $1600-1800 for the combo. Pontiac Complete Engines for 400 for sale. Rare 1963 Pontiac Grand Prix 421 With A 4. Curbside Classic Capsule: 1967 Firebird “428” Convertible – …. Dimensions. Due to different piston and connecting rod weights, there are actually four different 428 crankshafts. The motor is a Pontiac 400 bored. Unlike other FE family engines, the 428 is externally balanced. My 428 engine came from a 1969 car, probably one of the big Pontiacs, maybe even a police cruiser. 1968 Pontiac GTO 428 / Royal Bobcat VEHICLE TYPE Front-engine, rear-wheel-drive, 4/5-passenger sports sedan PRICE AS TESTED $5,099. The 428 is a 421 bored out to 4. On 1968–69 428 blocks you will find “428” stamped between the freeze plugs. Some dealerships had an option to swap the 389 to a 421 from 1964-1966 GTOs. 1935 Views 2 Replies 2 Participants Last post by Limelight, Jun 6, 2021. The 428 was Pontiacs top engine for 3 short years- 1967-9. Shipping will be high if someone outside the area wants it. Still, they are an unusual full-size cruiser, and this one on eBay is even more unusual due to its engine. The standard motor for the 1968 Grand Prix was a 4-barrel 400 rated at 350 horsepower. The 428 was Pontiacs top engine for 3 short years- 1967-9. I knew piston and rod broke (dropped valve), but #6 cylinder is cracked in two places (fore ~1/8 and aft ~1mm) about 3 inches from the bottom of the bore. 1968 Pontiac GTO 428 / Royal Bobcat VEHICLE TYPE Front-engine, rear-wheel-drive, 4/5-passenger sports sedan PRICE AS TESTED $5,099. Its only worth that much if the block numbers match a car you already have, and it will raise the value of that car alot- otherwise its worth $1600-1800 for the combo. I think the motor could be worth a lot more to some guy looking for 68 428But, most of demand seems to be for guys looking for a nice street motor for their poncho. The 428 will reve a little more than the 455, thus miving its HP and torque curve up slightly. 1968 Pontiac GTO 428 / Royal Bobcat VEHICLE TYPE Front-engine, rear-wheel-drive, 4/5-passenger sports sedan PRICE AS TESTED $5,099. Id think generally the 428 has less value now than when the guy rebuillt if 15 years agothe guy might have spent say 3500 to rebuild it 15yrs ago. The stroke is 4, the main journals are 3. 1969 Pontiac Grand Prix Model J. this engine is a good way to go. Its only worth that much if the block numbers match a car you already have, and it will raise the value of that car alot- otherwise its worth $1600-1800 for the combo. Here is a birds-eye view of the Holly Street. If cubic inches are your preference. In the interest of providing performance-minded Firebird buyers with an up-level 400 boasting of additional output, Pontiacs engineers created the T/A 6. From 1977 to 1979 the blocks have 3 mount holes. The bore and stroke combination comes to 428 ci, a displacement identical to some of the most powerful factory Pontiac engines. Of course, Royal Pontiac didn’t settle with the factory rating and tuned the 428 to around 425 hp. What is a 1969 XF 428 4 bolt main engine worth?. 428 or 455? (Do I Live Up To My Name?). BanditT/A, you should probably keep it around 4500, 4800 RPMs. However, in 1968 and 1969, this design was shifted in favor of open chambers. All the 421s are 4-bolt main, 67 & 68 428s were all 4-bolt, in 69 the lower-HP engines (360 HP) were 2-bolt. But, I would pull the pan and check and even pull off a center main to see if it is drilled/tapped. Reply Save Like B BanditT/A Discussion Starter · #15 · Sep 10,. In the original 1967 version, the 428’s closed chamber cylinder heads had a 14-degree valve angle.