79 Trans Am 570 hp stroked 403

My 1979 Trans Am with its new olds 403 that made 570 on Dyno. This is running open headers right now.

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Olds 403 cam run in ready!
11.05:1 CR, iron #7 heads with mirror polished chambers, Exhaust runners and piston tops, running 10% xylene in premium gas, can't hear possible knocking due the noise with open headers. Revs get up and down quite fast, nice.





The Olds 403 is BACK!!! Problem Fixed Classic G-Body Garage
Thank you to all who watched and commented on my last video and helped me determine the running issue with the 403. You will never believe what caused the issue!!!! WATCH





1979 Trans Am fun with the rebuilt motor :)
403 olds motor, big block chevy performance valve springs, straight headers and a big cam. Lift: Intake 475 Exhaust 500, Duration 215/225, and 1971 Olds 350 closed chamber heads machined and port and polished, Edelbrock intake.





570 hp stroked 403 79 trans am exhaust sound
The Exhaust is to small only 2 1/4, needs 3".




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