Decode Chevy engine codes with this comprehensive guide from NastyZ28.com, providing valuable information for enthusiasts and restorers.

Sep 3, 2010 · Wait till you hear this story. Got my 73 together with a ZZ4 and thought I'll put on some headers. No big deal popular GM crate engine, popular car, what...

May 6, 2012 · does anyone know if there is an origional style dipstick as to where i can replace the ZZ4 oil dipstick. i am working on making my engine look as correct as possible without …

Dec 29, 2005 · I'm looking for a new balancer and I don't know what the difference between internal and external balanced balancers are? Anyone know of a good (and inexpensive) …

Nov 16, 2000 · I have ZZ4 IN MY 73 Z28. I have the motor out right now and can't find any numbers that point me to the manufacture date. Anyone have any ideas?

Sep 14, 2012 · Chevy Small Block - Engine Block Casting Numbers Notes (for below): "High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated …

What makes Vortec heads any different from other GM steel heads? Pretty much everything. Beginning with the intake port, which is 170cc with a cast-in 'ski jump' on the port roof which is …

Jul 21, 2024 · It's the genuine GM pump that came with my ZZ4 crate engine. It doesn't have high miles, but it is 30+ years old. Since it's off should I proactively replace it. I'm tempted to …

Is there a reason why ypu giys are going with hydraulic TO bearings? We used em on a bunch of circle track cars but hydro TO bearings all end up leaking...

9901B - Decal decodes as 99th day of 1970 , 1st shift, "B" assembly line