SRP Forged Flat Top Pistons

Ford 351W forged flat top pistons by SRP 138780.

These pistons are a .030 over size.

Block reference height is 9.500".

Provides 357 cubic inches with a 4.030 bore size and a 3.500" stroke.

Dome volume is -5cc and they weight in at 541 grams each with a deck height of -.020.

For use with connecting rods measuring 5.956 long.

Compression height is 1.774.

Wrist pins measure .912 by 2.75 with a .140 wall thickness.

CNC machined ring grooves measure 1/16, 1/16, 3/16.

Sold as a set of 8 forged flat top pistons with pins.

Provides a 11.7 compression ratio with a 58cc chamber cylinder head.

Provides a 11.1 compression ratio with a 64CC chamber cylinder heads.

Provides a 10.06 compression ratio with a 72cc chamer cylinder head.

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.

ORDERING NOTE: Pistons are not returnable. Please be sure to check your engines oversize requirements, cam requirements and head and piston to valve clearance requirements before ordering. We recommend that this be done by an experienced and competant engine builder.


SRP 138730 Ford 351W forged flat top pistons .030 over sized SRP-138780$525.97
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