TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Oct 15, 2005 | 03:37 AM
  #1  
SSprayd's Avatar
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From: Kingsmill, Tx
Car: '97 30th SS, '89 IROC-Z
Engine: LT4, LT1
Transmission: T56, 4L60E
tunnel ram

ive heard that the tunnel ram is supposedly the injection setup "unicorn" to all third gen tpi owners so heres my question, i know it was on the truly awesome 92 firehawks but does it flow and produce better hp numbers that much better than that of the holley stealth rams and tpis mini rams?
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Old Oct 18, 2005 | 07:15 PM
  #2  
Tibo's Avatar
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Don't waste that much money for it. You will probably only find it on e-bay or the classifieds. For less money you can get a HSR that is just as good.
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Old Oct 18, 2005 | 07:24 PM
  #3  
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From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
Keep in mind HSRs aren't emissions legal if it matters where you live. They'll probably make more power up top though.
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Old Oct 18, 2005 | 09:01 PM
  #4  
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Take a look at "TPI Shootout" article.
Has some good info but read carefully because the setups did use different TB's during the runs.
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Old Oct 21, 2005 | 12:16 AM
  #5  
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From: College Park, MD
Oh, you mean "T-ram", not to be confused with the old-school dual carb setups that typically stick out a foot above the hoods of any such equipped muscle-car, which was also the base design for a current popular fuel-injection manifold known as the Holley Stealth Ram.

As they said, too hard to find and usually too much $$$ compared to the alternatives. Unless you want to be different.
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