TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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opinions on this combo

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Old 07-02-2006, 12:36 PM
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Car: '87 S10 Blazer & '91 RS
Engine: L98 & L03
Transmission: 700R4 & T5
Axle/Gears: 10 Bolt/3.73/3.42
opinions on this combo

350 with around 9.5:1 compression
XE268
Vortec heads, behive springs, ect. machined for added lift
Edelbrock manifold

now this is where i get a little off course. i wish to stay with the LTR. anyone that doesn't agree, please don't waste my time.

would i be better off using the ASM runners, or saimeesing the base like madmax did. i like that setup more, because it looks bone stock, but i guess with a vortec setup, that won't matter much.

this motor is for a street driven S10 Blazer, so the low end torque is key. i don't care much about power above 5000rpms because it will almost never see that. thanks for any input you guys can provide, Jim.
Old 07-03-2006, 08:56 AM
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Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
What are the specs on the 268 im too lazy too look them up(they should have been here if u wanted honest critiquing)

later
Jeremy
Old 07-03-2006, 09:06 AM
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Car: 88 GTA "Cocaine"
Engine: 350 tpi
Transmission: 700r4
Axle/Gears: 3.27
the stock setup was designed for a stock 305 and works well with a 305. you will see nice gains by replacing the runners and lower intake

it is expensive though!
Old 07-03-2006, 11:19 AM
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Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
AS&M runners with an aftermarket manifold. I assume those are iron Vortex style heads. If aluminum bump up the compression ratio.
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