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Differences in '89 L98's

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Old May 30, 2005 | 10:52 AM
  #1  
whitess's Avatar
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From: Frederick, CO
Car: 85 SS
Engine: 305 L69
Transmission: 2004R
Axle/Gears: 7.625, 3.73
Differences in '89 L98's

What's the difference between the '89 L98 230 hp motor (2.77 gears) and the 240 hp motor (3.27 gears)? Was it just the dual cats for the 240hp motor? Also, were the '90-'92 L98's equipped with single or dual cats?
Thanks,
Larry.

Last edited by whitess; May 30, 2005 at 10:58 AM.
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Old May 30, 2005 | 12:53 PM
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From: Massachusetts
Car: 91 Z28 & 21 Hellcat Challenger
Engine: L98, Hemi 6.2
good question. 89 was the 1st yr that dual cat options were available. That has to be the reason why the 3.27 gear l98 with 240hp is more then the 230hp 2.77. Also 91-92 Z28s L98 automatically came with dual cats. Im not sure about the birds tho
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Old May 30, 2005 | 02:21 PM
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IROCZTWENTYGR8's Avatar
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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
Dual converters made more power.
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Old May 31, 2005 | 10:20 AM
  #4  
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Initally For the Firebird line the Formula was to be the only car to get the Dual Cats. Later in the model year run this changed and the Dual cats were standard on the Formula, and appartently optional on the Trans Am and GTA. The dual cats option added an advertised 10HP to the rating.

John
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Old Jun 2, 2005 | 09:06 AM
  #5  
whitess's Avatar
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From: Frederick, CO
Car: 85 SS
Engine: 305 L69
Transmission: 2004R
Axle/Gears: 7.625, 3.73
Thanks, just what I needed.
Larry.
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