TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Aug 12, 2004 | 08:41 PM
  #1  
Wolfpack's Avatar
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Joined: Nov 2001
Posts: 176
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From: Martinsburg, WV, USA
Car: 86 Iroc
Engine: 305 TPI
Transmission: 700r4
Cam Suggestions

Im doing a Resto on my 86 Iroc and Since Im gonna have the Engine out for Paint and a T56 Conversion I wanted to Pep it up abit.

Its a 305 TPI with all the free mods, Minor Port work to the Intake(walls, port smoothing etc etc) Headman Headers and Y pipe, High flow Cat, Banks Cat Back(when I get to it), Fuel Presure Regulator, MSD 6 Ignitions System, Gutted MAF, K&N filters, No Smog stuff and will prob be running 3.73 gears in the Back once I get to the Rear of the Car.

Anyone Have a Decent Cheap(cuse I wont reuse it in my 383) Cam that will work well with the above combo...again cheap

Thanks In advance...
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Old Aug 13, 2004 | 01:07 AM
  #2  
Stekman's Avatar
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Joined: Jul 2003
Posts: 4,803
Likes: 2
From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
what kind of power / RPM are you looking for?
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Old Aug 13, 2004 | 09:29 AM
  #3  
Wolfpack's Avatar
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Joined: Nov 2001
Posts: 176
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From: Martinsburg, WV, USA
Car: 86 Iroc
Engine: 305 TPI
Transmission: 700r4
Its a Street Car so nothing Radical. Something that keeps the Lowend Power but gives the 305 more Mid and Upper RPM pull.
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Old Aug 13, 2004 | 07:45 PM
  #4  
Tremo's Avatar
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Joined: Aug 2001
Posts: 814
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From: San Jose, CA, USA
Car: 88 IROC-Z - original owner!
Engine: LB9 with K&Ns, MSD, Foil, Taylor
Transmission: WC T-5
Axle/Gears: BW 9-bolt, 3.45 posi
Look at the LB9 cam out of an 88. It's a roller, but you should also be able to find something similar in a regular flat tappet cam. The key here is that cam has a very large LSA, which reduces overlap and mellows the idle. It pulls pretty good at lower RPMs, I can poke along in 4th gear at 1000 RPM without lugging. I can go through parking lots in 2nd gear with my foot off the gas.
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