Product Description

Speed Pro Chevy 427 425/435 HP Forged Dome Pistons + RACE Rings 11.1:1 +30 OVRSZ

Speed Pro Forged Coated Pistons+RACE Plasma Moly Rings for Chevrolet 427

Hastings RACE Series Ductile Iron // Plasma Moly

About Speed Pro powerforged pistons:

These Speed-Pro forged pistons are made from extruded VMS-75 aluminum alloy that's forged under 3,000 tons of pressure to "near-net" shape. After that, they're machined to their final configuration. These pistons offer excellent strength and durability and are capable of taking the punishment that's dished out on the street and in competition. They're available for a wide variety of applications, including OE replacements and all-out racing engines.

Federal Mogul/Speed Pro Piston Part

Power Range Special requirements

Compression information

Ring groove size

Pin diameter

Rod length


Deck clearance

Skirt clearance

L2268NF+30 plus RACE Plasma moly ring set (Hastings) 2M5518+30

Chevrolet 427 V-8 - 4.280" bore (at +.030")

Domed head .300" high. DurOshield® skirt coated piston. Special Hi-Performance.

1966-69 Car (USA); 427-425HP; 435HP; closed chamber heads

idle to 7000+rpm Good for street/strip or race/nitrous to 150 shot

Compression distance: 1.765"

Piston head volume: 36.3cc

Approx. Compression (w/.030" bore):

w/106.9cc chambers 11.25:1

w/116.9cc 10.18:1

w/119.0cc 9.99:1

5/64" 5/64" 3/16" ring grooves

Pin diameter: .989" (included)

Stock 6.135" length rods

Press-fit only

Stock 3.766" stroke

.020" deck clr

.0035" skirt clr

Similar Products

Customers also bought