TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Old Sep 26, 2000 | 09:38 PM
  #1  
84,86,88Z28's Avatar
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Joined: Sep 2000
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From: MARYLAND
gears

Does anyone have 342's with a 305 tpi and 700r4. i was wanting something off the line and still have my top end. any ideas???
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Old Oct 3, 2000 | 07:23 PM
  #2  
graebz28's Avatar
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From: Kansas City, MO
Car: 83 Z28
Engine: 406
Transmission: T56
Axle/Gears: 9" with 4.10s
I got a 3.27 right now. Going from a 2.73, the car really moves off the line better and still gets good top end. 2500 rpm's on OD is usually 100mph.

I'm looking for a 3.42 next.
Go for it! YOu'll be impressed.
What do you have now?

------------------
Michael Graeber

My Garage

1)83 Z-28 T-Top: Full cage, 9" w/ lad.bars, Midwest Engine Tech 406sbc,Strip Dominator, Demon Carb, Phase VI Chevy Bowtie heads, .630" Crower roller set-up, 1 3/4 coated Hookers 3" true dual exhaust th400, fuel cell & still not running

2)89 Formula WS-6 305 TPI Auto For the road: minor motor, more suspension stuff. MODS
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Old Oct 3, 2000 | 09:27 PM
  #3  
Slow88RS's Avatar
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Joined: Jan 2000
Posts: 50
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From: Chicago
I got 3.42's with mine right now but its a 5spd. I love em, it will save your top end altho u should be okay since you have a TPI. I put 3.73's on my old RS and that sucked, lost WAY to much top end.

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90 Iroc LB9 5spd G92
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Dual Cats, 3.42 Borg Warner w/Posi, TPIS Airfoil, K&N, 160 Thermo, Mobil 1 Extreme Formula 0W-30 Synthetic Motor Oil, Home Made Ram Air, ACDelco Plugs, 8.8mm 300+ Accel "Race" Wires, Accel Cap And Rotor, Ported and Gasket Matched Plenum, TB Coolant Bypass
My 3rd Gen Web Page
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