gear ratio

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Jul 12, 2003 | 08:39 PM

warrior_91

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Joined: Apr 2003

Posts: 270

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From: Cedartown, Georgia

Car: 86 T/A

Engine: 305

Transmission: 700-R4 Auto

gear ratio

My car is still equipped with the stock 2.73 gear ratio. Is that a horrible ratio? It's probably not good for racing, huh?

Jul 12, 2003 | 09:18 PM

AlkyIROC

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From: 51°N 114°W, 3500'

Car: 87 IROC L98

Engine: 588 Alcohol BBC

Transmission: Powerglide

Axle/Gears: Ford 9"/31 spline spool/4.86

It's a highway gear to keep the engine rpms low at highway speeds. A performance street/strip gear would be 3.42 or 3.73. 4.10 gears and deeper are usually a bit too much unless you use 28"+ tall tires.

Jul 13, 2003 | 05:04 AM

unknown_host

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From: Medford, Oregon

Car: 1989 Iroc Z L98

Quote:

Originally posted by Stephen 87 IROC
It's a highway gear to keep the engine rpms low at highway speeds. A performance street/strip gear would be 3.42 or 3.73. 4.10 gears and deeper are usually a bit too much unless you use 28"+ tall tires.

Yep. Ideally you want to be at the top of your 1:1 gear (3rd in most automatic cars) through the traps, 2.73's wont even put you at the top of second in most cars. A friend of mine with a stock 350 in a 73 Nova went from 15.5's to 14.2's from swapping from 3.08 gears to 3.73 gears, posi and msd