Turbo 5.3 LM7 1986 Pontiac Trans Am 3rd gen at 5 PSI - 75-135 mph pull starting in 4th gear

Engine is a basic stock bottom end 5.3 with 6.0 (317) heads, LS6 cam and intake, and turbonetics 76mm BB turbo. Started low in 4th gear from 75 mph and let off at 135 mph. Car has A LOT left in it since the turbo is not even close to it's efficiency range yet!

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Recent Dyno pull while getting tuned on 11 PSI. This was the last and best pull during the tune. Car made 563 rwhp and 546 rwtq with a turbonetics T76 turbo. Stock bottom end 5.3, 317 heads, LS6 cam and valve springs, LS6 intake, and home built turbo kit. Running 93 octane pump gas. Car will make an easy 600+ rwhp on 14 PSI.





Third gen 1986 trans am turbo 5.3 LM7 with borla XR-1 muffler - startup and revs
Hadn't fired her up in a while and it was pretty warm out for winter time, so I figured I'd let it run for a bit and get up to temp. Don't see many guys using Borla XR1 mufflers on turbo 5.3's either so I wanted to get a sound clip up. Enjoy.




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