| Federal Mogul/Speed Pro Piston Part Number | Application | Power Range | Special requirements | Compression information | Ring groove size Pin diameter | Rod length Stroke | 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 |
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
