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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


Gear set..nice difference

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Gear set..nice difference Empty Gear set..nice difference

Post by 1975 S3 Sat Jun 30, 2018 5:46 am

Just changed gears from 2.73 to 3.42 on a stock 350 4bbl T350 with hooker long tubes and wow! Driveability around town +100%
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Post by Joe73 Sat Jun 30, 2018 6:23 am

Nice to hear. I always recommend a gear change as a first mod to wake things up.
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Post by 1975 S3 Sat Jun 30, 2018 6:49 am

also on the driveability bit, gear shifter was indefinate and didnt work as it should, tightened it up and works like it should and combined with gear change its a good improvement
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Post by bracketchev1221 Sat Jun 30, 2018 11:15 am

A 1 number change in gears is usually a big difference in driving. My 79 had I think 2.73’s in it and I went to 3.73’s and the car went from 15.20 to 14.12 in back to back weekends at the track.
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Post by bigredlaguna Sat Jun 30, 2018 11:22 am

Does it shift too quick at part throttle for you? Mine did, so I ground some weight off the governor weights to raise the shift points a bit. Adjusting the vacuum modulator just wasn't quite enough.

The downside is that you can spend an entire day just sneaking up on the desired result vs a few keystrokes for a computer controlled transmission.
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