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85' T/A shootout : HO 5speed vs LB9 auto

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Old Apr 21, 2002 | 04:14 PM
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tpivette89's Avatar
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From: Newark, DE
Car: 2006 Corvette
Engine: LS2
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Axle/Gears: 3.42s
85' T/A shootout : HO 5speed vs LB9 auto

someone has made me an offer on my stock 84' Z that im considering taking him up on. if i were to sell it, i would repalce it with one of these 2 cars. which one would you take and which one would win in the quarter? both cars are completely stock
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Old Apr 21, 2002 | 06:39 PM
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From: Hillsborough, NJ
Car: 1990 IROC
Engine: L98
Transmission: TH700-R4
HO 5 speed no question.....
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Old Apr 21, 2002 | 07:21 PM
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
What year is the LB9??
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Old Apr 21, 2002 | 08:13 PM
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HO 5 speed all the way.
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Old Apr 21, 2002 | 09:35 PM
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From: Kalamazoo,Mi,USA
Car: 84 Z28
Engine: L69: cam and porting
Transmission: T5, 3.73 rear
HO!!
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Old Apr 21, 2002 | 10:06 PM
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tpivette89's Avatar
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From: Newark, DE
Car: 2006 Corvette
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Axle/Gears: 3.42s
both would be 1985s. what would they run in the quarter?
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Old Apr 21, 2002 | 10:33 PM
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
85's huh. I might have to go with the LB9 here, 85 was the fastest for LB9 Auto's. Its kinda close. They are both pretty good.

305 H.O.: 190HP and 240TQ with 3.73's 5-Speed.

305 TPI: 215HP and 275TQ with 3.23's or 3.42's Auto (take a little off for Firebird TPI intake)

Last edited by IROCZTWENTYGR8; Apr 21, 2002 at 10:41 PM.
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Old Apr 22, 2002 | 04:47 PM
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From: Hillsborough, NJ
Car: 1990 IROC
Engine: L98
Transmission: TH700-R4
even so, the 85 HO had 3.73's behind and matched with a t-5 thats low 15 sec 1/4 mile.....
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Old Apr 22, 2002 | 07:58 PM
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Car: 99 Formula
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Both would run similar, I think it's more of what you would rather have TPI or carb.
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Old Apr 22, 2002 | 08:05 PM
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
Originally posted by Mark A Shields
Both would run similar, I think it's more of what you would rather have TPI or carb.
Yes, and Auto or 5-Speed. I think that are the things you have to base it on since they are gonna be close anyway.
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Old Apr 23, 2002 | 12:42 PM
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From: Chitown
I'd give this race to the LB9 by a nose...if everything is stock on both cars. The LB9 should have 3.27 gears, which work out well for tpi cars. The LB9 car will loose a little ground after the 1-2 shift but will make up for it shortly after. I know my '85 ran 15.0 @ 91.5. The only mods it had at that time were a high flow (generic) muffler on stock exhaust, and a tpis airfoil.

Now if the cars have mods I may have to go with the L69. The computer system is much more friendly to mods, and the engines respond very well. The gearing is better. Stock they do not make as much hp or torque as the LB9, but a few dollars invested will turn the tables.

Also keep in mind that these are older cars we are talking about. The winner of the race will probably be the car with the least amount of miles.

-Doug
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