i posted something abou thte smaller bolts in the exhaust forum. the 5/16ths ARP header bolts helped me out tremendously. those 2 almost impossible bolts turned cursing and yelling into patiently wrenchin 1/4 turn at a time with an 8mm stubby. ill WILL NEVER use the 3/8 heads again. altho the smaller head bolts seem to loosen up. when i yanked my motor 2 were missing. altho i never checked them to re-tighten them in the yr and a half i drove the car onthe street.
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71 grand prix SJ 4280# 462 new for 2008 -
8.7:1 , 98cc 6Xs 246/209, 342 12bolt , BW S475 turbo JGS 50mm WG 56mm BOV. 600hp the easy way!
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