TBI on an LB9?
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Joined: Dec 2005
Posts: 6,499
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From: Macon, GA
Car: 1992 Camaro RS
Engine: Vortec headed 355, xe262
Transmission: T56
Axle/Gears: 9-bolt 3.70
TBI on an LB9?
Out of curiosity (I've been hearing people whinging about TBI lately), does anyone know if anyone has ever put a tbi system onto an LB9?
I'd be curious how an LB9 with TPI would compare to an LB9 with TBI.
I tried to do a search, but most of hte terms are so common it's hard to get a good signal to noise ratio.
I'd be curious how an LB9 with TPI would compare to an LB9 with TBI.
I tried to do a search, but most of hte terms are so common it's hard to get a good signal to noise ratio.
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: TBI on an LB9?
You're talking about swapping just the induction system, and leaving the heads and cam alone?
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From: California
Car: 1982 Trans Am & 1982 Corvette
Engine: L-98 with LO-3 induction. 350 CFI
Transmission: 5 speed and vette has 700r4
Axle/Gears: 373's in T/A .. vette unknown
Re: TBI on an LB9?
I put it on my L-98
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Posts: 2,065
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From: California
Car: 1982 Trans Am & 1982 Corvette
Engine: L-98 with LO-3 induction. 350 CFI
Transmission: 5 speed and vette has 700r4
Axle/Gears: 373's in T/A .. vette unknown
Re: TBI on an LB9?
runs real nice ....
Joined: Nov 2005
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From: Sacramento
Car: 91 RS
Engine: 350 TBI
Transmission: WC T5
Axle/Gears: 3.42 Posi
Re: TBI on an LB9?
I bet with a proper tune nobody would be able to tell the difference. Hell it might even pull to a higher RPM.
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Joined: Feb 2003
Posts: 2,065
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From: California
Car: 1982 Trans Am & 1982 Corvette
Engine: L-98 with LO-3 induction. 350 CFI
Transmission: 5 speed and vette has 700r4
Axle/Gears: 373's in T/A .. vette unknown
Re: TBI on an LB9?
how does it perform ... when it had 373 gears it could leave a 305 TBI car without even trying it runs very close to my friends 1990 6 speed corvette .... but that was when it had 373 gears it now has 3.08 gears but still pulls real strong. I hear 3.1 v-6 guys talking the talk so I was fortunate to race one he had a automatic the car was a 91-92. this is after I put 3.08's in my car he got me out of the hole at take off buy maybe 1/2 a car, after the end of the intersection my car just wasted the V-6 .... Keep in mind though mine is not a 305 so I couldn't tell you how a LB-9 tbi would run against a stock LO-3 .... Just get a L-98 and throw LO-3 stuff on it you will be very happy! oh and use at least 305 TPI full exhaust sytem too.
Joined: Jul 1999
Posts: 10,950
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: TBI on an LB9?
A TPI 305 with a TBI intake is probably 90% identical to a TBI 305 with an LT1 cam in it. The TPI heads flow like 5 cfm better, and the LT1 cam has about .020-030" more lift. The TBI computer should be able to handle the TPI camshaft with little to no problems.
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