Throttle Body Recommendation
5.3 stock bottom end
arp rod bolts, head studs, LS9 gaskets, 160lb injectors, E85,LS HD timing Chain, Patriot Gold Dual Valve Springs, XER273 224/230 .581/.588 114 Factory PC and wiring harness, Hp tuners. Goal is around 850rwhp and running 15-19lbs of boost with twin Pt62/62's with .58 AR
If you are set up for it just get a 90mm 4 bolt TB.
Allthough I have gone 9.5@147 on a stock 78mm TB
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FWIW-I found a UMI 90MM throttle body 4 bolt in new condition, used for mock up only for $200. That should be just about right for what I am doing and saving around a $130 over another aftermarket one I was interested in.





