1970-1990 Chevrolet 454 Big Block with 168-tooth, externally balanced engines. 1990-pontiac-firebird-esi3548487 This manifold is ideal for

This manifold is ideal for drag racing (Super Stock

They are 100% dyno tested and serialized and serviceable and rebuildable by QA1 authorized service centers

Chevrolet/GMC

and they come included with the fool proof patented clear installation cap

making it an excellent upgrade for both track and autocross vehicles

1970-1990 Chevrolet 454 Big Block with 168-tooth, externally balanced engines. 1990-pontiac-firebird-esi3548487 This manifold is ideal forAs performance levels increase, an O. E. style flexplate just won't cut it and a stronger option is a necessity to prevent transmission and or converter failure. B&M has you covered with our high performance flexplate designed for 1965 1990 Chevrolet big block 454ci (externally balanced) V8 engines with two piece rear main seal. Features include high tensile strength steel construction to resist elongation and cracking, dual bolt pattern 10. 75 or 11.