Click to enlargeChevy 454 Forged Pistons

SRP 139477 Chevrolet 454 forged flat top pistons.

This piston set is .030 over sized providing a bore size of 4.280 providing 460 cubic inch displacement.

Works with the stock stroke of 4.000 and a rod length of 6.135".

Sold as 8 pistons with wrist pins and double spiro locks.

TECH NOTE: Stock stroke is 4.000 and stock bore size is 4.250 on 454 engines.

Compression height is 1.645 and each piston weighs in at 594 grams.

Dome volume is -3cc.

Wrist pins measure .990 by 2.930 with a .150 wall thickness.

CNC machined ring grooves accept 1/16, 1/16, and 3/16 rings.

Ring land and the crown thickness is specifically engineered for mild turbo, supercharged and nitrous applications for street or racing.

They work great at a heavy duty replacment piston as well.

Provides 8.9 compression with 112cc chamber cylinder heads.

Provides 8.4 compression with 118cc chamber cylinder heads.

Provides 8.2 compression with 124cc chamber cylinder heads.

Made of 4032 wrought aluminum alloy.

Designed for street and strip applications utilizing compression ratios that are compatible with pump gas.

These pistons also provide a quieter engine on cold start-up.

Features symetrical valve pockets fully radiused.

Honed pin bore, forged side relief.

Full floating wrist pin.

Double spiro locks.

Machined oil drain back holes (not slotted).

Pressure fed pin oilers.

SRP pistons are forged from wrought alluminum alloys.

Wrought aluminum is 20% stronger than aluminum bar stock and 50% stronger than cast aluminum pistons.

SRP uses only the highest grade wrought aluminum alloys to make a stronger, lighter piston.

These aerospace quality alloys have been rigourously tested and found to be the most durable material for this application.

To optimize the weight of the piston, application specific forgings are designed in 3D computer modeling programs.

This makes it possible to have consistent dome thickness which will not compromise the durability of the piston.

All SRP pistons feature fully CNC machined domes, dishes and valve reliefs to give you precise compression ratios and consistent weights.

All SRP pistons incorporate CNC diamond turned skirts to provide you with a better, more consistent finish, and have CNC honed pin bores and are thoroughly deburred prior to cleaning and packaging so no prep work is required.

SRP pistons are ready to run right out of the box.

SRP 139477 Chevy 454 forged flat top pistons .030 over sized 6.135 rod SRP-139477$561.97
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