TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old 11-20-2007, 08:19 PM
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Car: 89 IROC
Engine: 355,LT4 HotCam,E-tec, vortec int.
Transmission: 5 sp., Alum Driveshaft
Axle/Gears: 3.73 Posi
Need Advice

I need some advice and help.
Right now here's what I've got:
355 cu. in. tpi, large tube runners, bbk 52 mm throttle body, ported plenum, 26 lb. ford injectors, adj. fuel pressure reg. @ 47 lbs., hooker shorty headers, 5 speed, alum. driveshaft, 3.73 posi rear end.
Just got a good deal on an LT4 Hot cam, so I bought it. Also have #113 alum vet heads not yet installed.
My question is, what do I need as far as rockers, valve springs, shims and head work to complete this setup. Also, about how much hp do you think this will produce?
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