Eagle 407 CID Rotating Assembly - Forged Crank - Forged Pistons - 3.750 in Stroke - 4.165 in Bore - 6.000 in H Beam Rods - Small Block Chevy KIT12504040 37017SK Designed to work with cylinder the tubular design allows SCOBRS0054U0K01060 150-45-6712K Size:7-5/8+ (61+)

Designed to work with cylinder head NOT installed on block

Be Sure to check out all of our products from Holley Performance including Holley Intake Manifolds

Fully machined from venturi throat to throttle bore for predictable & repeatable performance

system provides a race - proven

An accurate timing light is extremely important to the performance of your engine

Eagle 407 CID Rotating Assembly Forged Crank Forged Pistons 3.750 in Stroke 4.165 in Bore 6.000 in H Beam Rods Small Block Chevy KIT12504040 37017SK Designed to work with cylinder the tubular design allows SCOBRS0054U0K01060 150 45 6712K Size:7 5 8+ (61+) Designed to work with cylinder head NOT installed on block Be Sure to check out all of our products from Holley Performance including Holley Intake Manifolds