1987 buick grand national stainless fuel tank

A custom exhaust system was fabricated by a local shop using 2.5-inch mandrel-bent tubing and ATR Pitbull mufflers, since (under the guidance of Bruce Campbell) Darren decided the stock-style suspension would not suit his needs. The heads were then topped off with Champion 1.65 ratio rockers and COMP Cams chrome-moly pushrods.ĪTR 1 5/8-inch stainless turbo headers recycle the exhaust from the GN1 heads, then depart the turbo housing via an ATR 3-inch downpipe. The Manley 1.90 intake and 1.60 exhaust valves were left untouched prior to the install however, Wayne massaged and polished the ports before sandwiching a set of SCE solid copper head gaskets with ARP head studs. The billet roller was one of PTE's grinds designed for efficient interaction with the Champion GN1 aluminum heads over 30 psi of boost. 581-inch lift, 224 duration, 110 LSA solid-roller cam. After PAR Automotive completed the machining and the short-block was assembled, Wayne Haydock of Haydock Racing installed a COMP Cams. Billet steel main caps are used to tie the bottom end together while not interfering with the stock oil pan and windage tray. 020 overbore on the stock 109 block, and compression is bumped to a slightly elevated 8.2:1. The forged pistons were sized to match the.

Darren couldn't be more truthful when he says a set of JE pistons are one of the only non-stock additions to his bottom end.

1987 buick grand national stainless fuel tank