Is a T76 too big for my car?
03-31-2006, 07:56 AM
#1
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Is a T76 too big for my car? I have a forged 347 with PP LS6 heads and an FMS F9 blower cam. CR is 9.5:1. The car is a 6 speed. I'd like to hit between 700 and 750 RWHP, more if possible. Is a T76 too big for my car?
03-31-2006, 08:22 AM
#2
I'd say no and you probably need something big to make that power...You're definitely going to have to go forged...I didn't see that in your sig but you will to hit that and stay safe...Injectors too...You'll probaby need some 60's or maybe 72 lbs for that...Those gears probably have to go also...Just some FYI
03-31-2006, 08:58 AM
#4
I am doing a forged 346 with 8.5:1 compression and Some Dart 225cc heads. I have a Hybrid T70 66mm turbo that I am going to use to start with just because I already have it. I am looking for around 550rwhp. I am thinking of stepping up to a T76 later on in the season. I dont think you will have a problem getting to 750rwhp with your setup. You will need to be on par with your fuel and tune having 9.5:1 compression. I would add a Meth injection kit to your combo for safteys sake.
03-31-2006, 09:13 AM
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I am looking into the GMR single kit with the upgraded turbo. I plan to run a meth kit. I am starting to wish I would have built a lower compression engine. 
03-31-2006, 09:14 AM
#6
Try using our Turbo Calculator. Using the calc you input information about your engine and it will plot the ouput directly on different turbo maps for you. This way you can see if the turbo is too big or small for your application.
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03-31-2006, 10:22 AM
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Originally Posted by dheck
The one GMR offers with their kit is the Precision T-76GTQ. I would assume this tubo will perform well for what I am after. Correct?
03-31-2006, 10:55 AM
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Originally Posted by SUPER DAVES Z
A Q trim T-76 has made around 780rwhp on a couple cars using a similar turbo kit to the GMR kit, so the turob is not a problem. I'd be more worried about the backpressure at 700hp with that kit. It can do it but a non-log kit would be a lot better for your motor at that HP level.
