I HAVE A 92 Z28 WITH THE 5.7L. I ALREADY HAVE FLOWMASTER MUFFLERS BUT NOW HAVE MY HEADMAN HEADERS. THEIR SHORTIES (SMOGLEAGAL I LIVE IN CALIFORNIA)AND CAME WITH EVERYTHING TO HOOK THEM RIGHT UP(ACCORDING TO HEADMAN). MY QUESTION IS ARE THERE ANY TIPS OR ADVICE TO INSTALLING THEM(TOOLS ETC.). I HAVE BASIC HAND TOOLS AND PREETY GOOD AT WRENCHING BUT IV HEARD SOME SCARY STORIES ABOUT THIS INSTALL. PLEAS HELP ME ABOUT BEFORE I DO IT. THANKS

 

I installed Hooker headers in my '87 IROC, but the same things apply. When you pull out your old manifolds, run a tap through all of the bolt holes to make it much easier to thread the new bolts in. For most headers, a bolt hole on the back of the right cylinder head is used that wasn't used with the stock manifolds. Might want to open up the bolt holes in the header flanges a little just in case they're not quite on center for each bolt hole. Take your time, don't forget where parts, brackets, and misc. bolts go back, and have fun. Oh, you'll probably need new spark plug wires with 90-degree boots so you don't fry your wires like I did.

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Greg Westphal
'87 IROC 305TPI/A4