I just purchased an 89 IROC Z28. The original 5.7 was removed and a ZZ4 crate was installed in it. It has TPI. There are a set of Eddlebrock headers on it to a 3 inch flowmaster exhaust. It doea have a Cat. There is also a dual fee K&N intake on it.

Where can I get technical data on this engine? I was told there is a chip in it. I do not know who's chip is in it. Will have to find it and Idea it.

I want to have this ZZ4 tuned up but I need to know more about the engine requirements and the chip.

If any one out there has a ZZ4 setup please drop me an email. Would like to chat with you.

Any advise on upgrades will greatly be appreciated! I am planning to install an MSD system in it.

I am located just outside of Phila. PA.

Thank You,

Dane R. Marley
610-896-0217 - home
610-299-6360

 

Not sure what specs you need. ZZ4 is pretty well-known to anyone familiar with crate engines. There's a thread on the TPI forum that has all of the details of the cam specs.

Otherwise, the engine details are here http://www.gmgoodwrench.com/perfpart...f/24502609.pdf .

 

Thanks Five.

Dane