Here is the 1968 427 L88 that was turned into a .060 over with 454 5140 Nitrided Forged Crankshaft making it a 468. It has short skirt pistons and low friction file-fit rings with 7/16 GM Connecting rods. It is running a big solid flat tappet camshaft with double roller timing chain and roller rockers under the old Cal-Custom valve covers. It has a deep sump pan HEI and a few other goodies like 7/16 hardened pushrods. It is a 3963512 Block with a set of 3919840 heads. This is a pretty wild engine with a 14:1 compression ratio. It is bolted to a built TH400 with a high stall converter (I think around 5,000rpm) and full manual valve body and a deep sump aluminum pan. After I dropped this in the car I finally admitted to myself that it was way too radical and yanked it back out. This engine makes NO vacuum at all so the brakes would have either been converted to hydra-boost or I would have needed a big can and a vacuum pump. I decided I'd like to drive my car on the street but I don't want to take apart this engine so i'm going to drop in a bone-stock 454 out of a Suburban. I know it has small heads, and flat top pistons, a cast crank and 3/8 rods but it will be nice for cruising for now. Besides, I bet i'll be getting around 18-20 mpg if I tune it right and step down to a rear gear in the neighborhood of 3.42's or so.