77 Trans Am 477 on E85 and pypes exhaust

@pro-touringf-body5179
@vikingperformance2574
@OSSparts

[@MikeY77z28]

Sounds great Sean.Its cool that you keep it all Pontiac.

[@juliomiranda4259]

Coolest car on u tube

[@robertkonchan197]

Sounds wicked!

[@ernestopanattvillegas7307]

man I love your car, always see your videos. Im working on a 78 in South America

[@dragthis2006]

Please tell me your engine mods and exhaust specifications please. If you have a list that'd be great

[@seanrupp3052]

The details are all on ProTouring F-body website. It's a custom built Kauffman bracing motor with A pypes transverse mount muffler. There are more videos of the mods