Rebuilt Gen IV Big Block Chevy 454 for sale, professionally assembled and ready to drop in: a 2-bolt main, 2-piece rear main block with a precision-balanced (+/-1g) rotating assembly featuring a GM cast 2-piece crank, forged GM “dot” 6.135” rods with 7/16” bolts, and GM forged LS6 4.250” dome pistons with moly rings, plus an SFI flexplate and new harmonic balancer. A new hydraulic flat-tappet cam (.540/.540 lift, 228/238 @ .050) is installed, and the cylinder heads have been fully blueprinted and reworked with 2.19”/1.88” stainless valves, Comp Cams spring cup eliminators, performance valve springs, Mark IV adjustable rockers, 3/8” guide plates and pushrods. Additional upgrades include a trap-door oil pan, Cloyes double roller timing set, tall valve covers, and stainless hardware throughout. Asking $3,199 with core; located in Gladstone, OR. Shipping can be arranged.
