Fits Big Block Chevy Engine Crankshafts 1997 pontiac firebird s billet aluminum upper bushing

s billet aluminum upper bushing lockout rings capture the inner bushing sleeve (front and rear) and the outer lip of the bushing cup on the cradle (front)

3-liter engine is manufactured using durable 409 stainless steel throughout and features 3

5 kit offers exceptional ride and handling

ACDelco 88863951

00-inch mandrel bent pipes for better exhaust gas flow

Fits Big Block Chevy Engine Crankshafts 1997 pontiac firebird s billet aluminum upper bushingThis heavy duty crankshaft turning nut easily installs through the harmonic balancer and into the end of the crankshaft with the included grade 8 bolt. Once that's done, your balancer is held securely, and you have turning nut that is ready to rotate whenever necessary.