Engine Cylinder Head 1991-pontiac-firebird-esi6483971 The adjustment allows the user

The adjustment allows the user to lengthen or shorten the control arms an additional 1/2” beyond the already extended 5/8 of an inch

And Peak Speed Recall

Easily installs into oil pickup tube

Tachometer

This has led to the ECE R90 brake safety regulation approval of R90 which is now completed and certificates are being obtained (during July 2011)

Engine Cylinder Head 1991-pontiac-firebird-esi6483971 The adjustment allows the userThe Edelbrock #60759 Performer cylinder head is designed for 302, 327, 350 and 400 cid small block Chevy engines up to 1986. This cylinder head includes your choice of 64cc (In order to retain stock compression ratio on 1970 and earlier small blocks) or 70cc combustion chambers and high flow intake and exhaust ports. A Complete head includes larger than stock 1. 46" valve springs to handle most high lift cams. This head retains the stock intake port