Pontiac 428

1969 pontiac 428 xf engine block grand prix automatic. All 428 cylinder heads received the 14 degree valve angle closed chamber only in 67 and open chamber 68 and up it was replaced by the 455 for the 1970 model year. Since that time it has been used as a performance engine in several cars by drag racers.

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Although the 428 was modeled after the pontiac 421 it had a cast iron crankshaft rather than the steel used in the 421.

Pontiac 428. The pontiac 428 cubic inch engine was used only from 1967 69. Per chance the final displacement was derived by the bore and stroke. 7 s 0 p o n s o a r p a 7 e e d 1 1 u j 1 0 f j 1 1. And that children is just about all there is to the engine swap.

1969 pontiac 428 xf engine block grand prix automatic. The 428 is a direct bolt in replacement for the new 400 or the older 389. Tell us about your vehicle to find the right parts faster. 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.

Perhaps the neatest thing about the 428 is that it is a direct descendant of pontiac s legendary 421 which was a killer on drag strips and speedways during the early 1960s. To power this visually stunning pontiac gto is a pontiac 400cid engine that includes a special high rise manifold 4 bbl carburetor and aluminum valve covers. Pontiac 428 forged brc pistons 005 over see more like this. The pontiac v8 roars to life through the 2 1 2 inch custom exhaust system that includes flow master mufflers for that true muscle car sound.

All 428 engines were factory installed in large cars only. The bore and stroke combination comes to 428 ci a displacement identical to some of the most powerful factory pontiac engines. However there were a few dealers that would install a 428 in a customers gto or firebird for higher power levels. There were multiple versions of the engine produced each year of it manufacture.

Pontiac v8 400 428 455 herb adams cast aluminum oil pan trans am gto firebird. The pontiac 428 was introduced at the same time as the pontiac 400 v8 in 1967 and used primarily in the grand prix but also for the legendary gto and firebird models. Save pontiac 428 engine block to get e mail alerts and updates on your ebay feed. Time left 2d 13h left.

Find the right parts for your pontiac. The 428 is a 421 bored out to 4 12 and it has the same 4 stroke that the 421 did.