Product Description


This item is for eight (8) STANDARD bore Speed Pro hypereutectic, 30cc dome top, coated skirt pistons and moly piston ring set (Hastings/MAHLE) for Chevrolet 454ci (7.4L) big block V-8 engines. P/N (8) H581CP-STD + 2M683-STD. These pistons .



Bore: 4.250 in. (at standard bore)
Stroke: 4.000 in. (stock)
Connecting Rod Length: 6.135 in.; rods NOT included
Piston Material: Hypereutectic aluminum
Piston Top Style: Dome with 2-valve reliefs
Dome Height: .340 in.
Dome Volume: -30cc
Compression Height: 1.640 in.
Wrist Pin Diameter: .990 in.; pins included
Wrist Pin Style: Press-fit or floating; pin clips included
Ring Land Thickness: 5/64-5/64-3/16 (oil ring); rings included
Usage: Street and mild strip; up to 150HP nitrous
RPM Range: Idle-6,500
Compression Ratio (approximate): 12.2:1 w/100.9cc; 11.4:1 w/106.9cc; 11.1:1 w/109.4cc; 10.2:1 w/119cc


Falcon Performance specializes in shipments to Sweden, Germany, Australia, Norway, Denmark, France, United Kingdom, Iceland, South Africa, New Zealand, Japan, Canada, and many other countries. Please use the shipping calculator for orders outside the continental USA. We do combine shipping costs for purchasing multiple items. Before paying, add all desired items to your eBay cart and then pay for all at one time. The eBay system will calculate the combined shipping discount.

Please note that "free shipping" is not free for us but only to you. We pay to ship all parts to customers. Should you decide to return your purchase due to 'buyers remorse', we will refund the parts price less a restocking fee for the return; to mostly recoup our original shipping costs. Any damage to box or parts will alter the amount of the restocking fee. In many cases, we must buy new boxes from our suppliers.

Put our 75+ combined years of experience to work for you... Thank you, the Falcon Team!

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