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The Fixer · 09-04-2007, 10:50 AM

By stock TPI, do you mean stock runners, base, plenum, and throttlebody? They choke off around 43-4500 rpms on a 350. If you upgraded to some larger runners, 52mm throttlebody, and port the plenum you might see 5000 rpms. If you're intent on sticking with TPI, focus on making torque, and pick a cam that makes ~a lot~ of it and is done revving by 5K rpms.

I have yet to dyno my motor, but it certainly feels healthy. It's a .030 over 350 with 9.8:1 compression, a ZZ4 cam, and World Products S/R Torquer 58cc heads. They're basically a cast-iron version of the L98 Vette head. Also have 1.5 aluminum roller rockers, SLP runners, ported upper plenum, and a 52mm TB. Soon I'll get the car over to TTP or some other local dyno shop and see how it does.

09-04-2007, 10:50 AM	#10
The Fixer Join Date: Aug 2004 Location: North Jersey Posts: 3,047 iTrader: (5)	By stock TPI, do you mean stock runners, base, plenum, and throttlebody? They choke off around 43-4500 rpms on a 350. If you upgraded to some larger runners, 52mm throttlebody, and port the plenum you might see 5000 rpms. If you're intent on sticking with TPI, focus on making torque, and pick a cam that makes ~a lot~ of it and is done revving by 5K rpms. I have yet to dyno my motor, but it certainly feels healthy. It's a .030 over 350 with 9.8:1 compression, a ZZ4 cam, and World Products S/R Torquer 58cc heads. They're basically a cast-iron version of the L98 Vette head. Also have 1.5 aluminum roller rockers, SLP runners, ported upper plenum, and a 52mm TB. Soon I'll get the car over to TTP or some other local dyno shop and see how it does. __________________ Seeya, Steve R. in North Jersey '16 Go-Mango Dodge Charger R/T. It's so good to be back in a V8-powered, RWD car! Former Toy - '88 Monte SS - had lots of mods... Last edited by The Fixer; 09-04-2007 at 10:55 AM.