Carburetors Carb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.

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Old 06-03-2007 | 12:09 AM
  #1  
Vash Vega's Avatar
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From: Sacramento,Ca,
Car: 1990 Iroc Z,2004 Z06 Corvette
Engine: 5.7 L98 tpi/LS6 346 ci
Transmission: 700r4/MN12
Axle/Gears: 10 bolt 3.23/DTE 3.42
quick question

my friend wants to know if he puts a stock l98 in his 85 camaro lg4 with the cc carb and a aftermarket dual plane intake how much of a torque loss will he lose we been searching and can't find a really good answer is there a dyno sheet on a tpi l98 vs carb l98 i kno it will pull higher rpms but he wants to know if the torque loss will be horrible
Old 06-03-2007 | 05:07 PM
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five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
It will be noticeable, but not horrible. I don't have torque curves to quote, but a higher stall torque converter will make you forget about the loss.
Old 06-03-2007 | 07:19 PM
  #3  
Vash Vega's Avatar
Thread Starter
Member
 
Joined: Sep 2006
Posts: 413
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From: Sacramento,Ca,
Car: 1990 Iroc Z,2004 Z06 Corvette
Engine: 5.7 L98 tpi/LS6 346 ci
Transmission: 700r4/MN12
Axle/Gears: 10 bolt 3.23/DTE 3.42
Re: quick question

thanks for your reply if he races a stock l98 tpi will he lose he has a t56 out of a 96 camaro and 3.42 gears,will the torque numbers on a carbed l98 be close or a lil higher than the l81 vette,i also have a carb l98 but i swapped the cam and i leave the line harder than a stock l98,should he swap his cam also

Last edited by Vash Vega; 06-03-2007 at 07:22 PM.
Old 06-04-2007 | 02:02 PM
  #4  
five7kid's Avatar
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Joined: Mar 2000
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Most likely a carb'd L98 w/T56 will outrun a stock L98. I have no clue about an L81 (mostly because I have no clue what that is).

Cam change can only help (if chosen properly, and the rest of the package backs it up).
Old 06-04-2007 | 08:18 PM
  #5  
Vash Vega's Avatar
Thread Starter
Member
 
Joined: Sep 2006
Posts: 413
Likes: 0
From: Sacramento,Ca,
Car: 1990 Iroc Z,2004 Z06 Corvette
Engine: 5.7 L98 tpi/LS6 346 ci
Transmission: 700r4/MN12
Axle/Gears: 10 bolt 3.23/DTE 3.42
Re: quick question

Originally Posted by five7kid
Most likely a carb'd L98 w/T56 will outrun a stock L98. I have no clue about an L81 (mostly because I have no clue what that is).

Cam change can only help (if chosen properly, and the rest of the package backs it up).
ok thanks and a l81 is an early 80's corvette motor
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