To any1 who is good with G-Techs....

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Mar 24, 2001 | 02:47 AM

IROCZTWENTYGR8

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Joined: Jul 2000

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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

To any1 who is good with G-Techs....

When u measure HP, how much do u add on to the # it gives u since its measuring RWHP and it is going to be less because of drag since the car is moving, not like a dyno. Thanks!!

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

Mar 24, 2001 | 03:16 AM

KevinP92Z

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Joined: Jul 1999

Posts: 199

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From: Houston, Tx

Car: 92Z, 96RamAir, 91 4X4 Burb

Engine: 383 Super Ram, LT1, 350 roller

Transmission: 700R4, Probulit 700R4 &4L60E, 4L80E

Just like at a chassis dyno, depending on whou you talk to, you add 12-15% for manual drivetrains, and 15-18% for autos. Each dyno place I've been to had slightly different "ideas" on what the percentages should be.

When my car was dynoed last, the operator factored in 18% for my auto.

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KevinP92Z
92 Z28 383 SLP cam,SLP headers,SLP 2ontheLeft,Trick Flow TW heads & pistons,Edelbrock base,Accel SuperRam,52mmTB,Scat Crank & forged ConnRods,MSD 6AL,SLP convertor,Baer 13/12" Track,Moser axles,Hotchkis,Genuine GM 3.42s,SLP HD Torsen,17x9" chrome SS rims
96T/A w/SLP Ram Air,SLP 2ontheLeft, Bilsteins, Baer, Hotchkis, Genuine GM, Torsen
76 4X4 Blazer 400TPI project