Lifetime Premium Member
Join Date: Feb 2007
Location: Edmonton, AB. Canada
Just bought a zz427/480 gm perf. Engine
Greetings from Canada.
Had a few issues with the original L78 396 and decided to "park" it under the bench.
Pondered long and hard as to what I wanted to replace it with.
ZZ454, ZZ502, build a 468, buy a 468, buy a 496 etc.
Ended up going with the GM performance ZZ427.
This engine just looks like fun !!
I wanted something I could just drive the snot out of and not worry about hurting anything.
Then if sometime down the road I decide to get wild on it, I can easily make a 468 or 496 using a new (not 35 year old block) and have a factory roller set-up to boot.
And now for the GM propaganda:
There are few engines that conjure up images of greatness like the 427 Chevy big-block. New to the GM Performance Parts lineup, the ZZ427 big-block crate engine brings back all of the good things that you remember about the 427 with a few modern new upgrades. With an updated cast iron block, a 10.1:1 final compression ratio, and an aggressive hydraulic roller camshaft, the ZZ427 offers you outstanding performance while still living on low octane fuel.
The legendary 427\" big-block Chevy powered some of the most storied cars in the history of the high performance automobile.
This latest version holds true to that tradition, offering you a tough, 4-bolt main cast iron block with all a forged internal rotating assembly.
The top half of the engine is the same as the limited edition Anniversary 427 crate engine: oval-port heads that use 2.19\" intake and 1.88\" exhaust valves work with 1.7:1 aluminum roller rockers and a .510\" intake/.540\" exhaust camshaft.
The intake is a matching, high-flow oval-port aluminum piece that gets fed the air/fuel mix from a 870-cfm carburetor. An HEI distributor, aluminum water pump, spark plug wires, and a 14\" flexplate round out the package.
Internally balanced, the ZZ427 will spin to 6000 rpm before it’s time for you to shift. The ZZ427 is an exciting trip back to one of the high points in the history of the Chevrolet big-block. With a conservative rating of 480 horsepower and loads of torque, it’s still one of the best crate engines for just about any big-block application.
Matched to my KEISLER RS500 and all the giggles you can handle for under 9 grand.
Can't wait for spring !!
IF YOU DIDN'T BUILD IT YOURSELF...
YOU DON'T REALLY OWN IT
68 Chevelle SS 396 (GMPP427) RS500 3.31
(YES IT'S FAST...NO, YOU CAN'T DRIVE IT)