76mm turbo 5.3 3rd gen TA WOT runs @ 5 psi
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76mm turbo 5.3 3rd gen TA WOT runs @ 5 psi
Hey guys...just started street tuning with my tuner and we got it running pretty good for the time being. Running 5 psi currently but engine will be around 12-14 psi when all said and done. Thing feel like a monster already at just 5 psi though! Can't wait to start driving it and see what it's got.
Those of you who don't know, it's a 5.3 with 317 heads, ls6 cam and valvesprings, ls6 intake, and custom fabbed turbo kit with 76mm BB turbo.
http://www.youtube.com/watch?v=ssFnd9Te_Ws&feature=plcp
Those of you who don't know, it's a 5.3 with 317 heads, ls6 cam and valvesprings, ls6 intake, and custom fabbed turbo kit with 76mm BB turbo.
http://www.youtube.com/watch?v=ssFnd9Te_Ws&feature=plcp
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Thanks man! As far as the valve springs, it's got LS6 springs in it. A lot of guys seem to have luck even with higher boost with the LS6 springs. I guess once I get it on the dyno, we'll see what they can take. Not too big of a deal if I do have to change them out though. Might see what it makes on 10 PSI and if I still don't hit my goal, I'll up it more. Only looking for 550-575 RWHP, so if it makes it on lower boost, I'll keep it there.
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Rear gears are 3.55's. I've been taking it to 6K RPM. Tune still needs a bit of work but for the most part, the AFR's are pretty much spot on up to redline under WOT. Part throttle is def a bit choppy at certain RPM's but the car has big 80 lbs injectors which may be contributing to the problem. Pretty sure I fucked up the tranny in that vid too. If you listen after the 2nd rip, theres a horrendous whining noise after I lift...and that was in nuetral lol. And on that 2nd rip, I start in 2nd gear since I couldn't get the tranny into 1st leaving the stop sign. Guess I got ripped yet again on our wonderful classifieds here on tech!
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It's a great setup and they put down respectable numbers most of the time. As far as head gaskets, I went with stock GM MLS gaskets.
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As far as the gopro, it was mounted on the windshield. And I do have fenders now...my sig pic is old, haha. I've upgraded to having fenders now but still no front bumper or hood. Paint isn't cheap!
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Thanks! Good luck with yours.