Product Description

Federal Mogul/Speed Pro Piston Part

Power Range Special requirements

Compression information

Ring groove size

Pin diameter

Rod length


Deck clearance

Skirt clearance

L2291F+30 plus MOLY ring set (Hastings/MAHLE) - We also have other piston sizes available.

Ford 390 FE-series V-8 - 4.080" bore (at +.030")

Flat head w/4-valve reliefs. DurOshield skirt coated piston.

1966-70 Car (USA) - w/4-barrel carburetor

idle to 6500+rpm Good for street or race/nitrous to 150 shot

Compression distance: 1.776"

Piston head volume: -10.0cc

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

w/67.1cc chambers 10.00:1

w/68cc 9.91:1

w/71cc 9.62:1

w/74cc 9.36:1

5/64" 3/32" 3/16" ring grooves

Pin diameter: .975"; pins included

For stock length rods

Press-fit or floating

Stock 3.780" stroke

.015" deck clr

.0020" skirt clr

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