midframe 78 made it in now need some input!
THANKS ROB @ MODULAR TURBO
turbonetics midframe h78mm with 75mm F1 turbine and the Y2K compressor cover.. its on a T4 flange with a 1.14 AR..
its goin on a 2004 GTO with forged LS1 347 9.5 to 1with a VA speed turbo cam backed by a 4l80e (still need) and a full gforce engineering IRS rear.
now i need to start looking at heads i want to run some AFR 225s with 62cc chambers.. but dont see them on the site anymore they now offer a 230 head and want to know if thats goin to be too big of head for a 347
goal is to go 9s and get close to the 140 traps.. hopefully i can keep her under 4000lbs..
let me know what you think..


he is saying go with the 230s or even better yet get some "mamo romanced" 230s.. said should see 30-40 over the regular 230s with a boosted motor...
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I too think you will be closer to 150mph on that setup with some good fuel and suspension. You are seriously underestimating what kind of power you are going to be putting down with an auto haha.
thanks for all the positive word guys it will be a long time til she is done cuz of deployment but it will be well worth the wait












