gear upgrade recommendation!
#2
Re: gear upgrade recommendation!
Are you going to upgrade the differential too?
Quick Performance has some good kits to do the whole thing. They sell the Yukon Dura Grip with Motive gears and the USA Standard installation kit. These are all pretty high quality parts and you can't beat their prices.
The 3.42 gear is pretty popular.
Your '91 should have the 7.6 rear end with 28 spline axles. http://www.quickperformance.com/GM-7...t_p_20409.html
Quick Performance has some good kits to do the whole thing. They sell the Yukon Dura Grip with Motive gears and the USA Standard installation kit. These are all pretty high quality parts and you can't beat their prices.
The 3.42 gear is pretty popular.
Your '91 should have the 7.6 rear end with 28 spline axles. http://www.quickperformance.com/GM-7...t_p_20409.html
Last edited by big gear head; 08-12-2017 at 08:54 PM.
#4
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Re: gear upgrade recommendation!
If you like the gas mileage and the low rpm's on the highway of the 2.73's, go to a 2,400 - 2,500 rpm stall torque converter. You will get a lot more off the line without losing the advantages of the 2.73's. If you want to add a posi., that would be fine.
#7
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Re: gear upgrade recommendation!
i tried to go to 355s on mine. the shop took it apart and then realized that 355s wont fit in the stock housing. he put it all back together then called me and said I needed to buy a new carrier. I would have too if it hadn't taken him 2 weeks to get to that point. I was tired of not having the car. he originally said 2 days
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#11
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: gear upgrade recommendation!
3.42 is a great gear choice - many have moved to 3.73 and later realized that it is overgeared for the stock TPI power band and kills top speed.
#12
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: gear upgrade recommendation!
I went 3.73s, an S10 torque converter, corvette servo and shift kit to go along with it. Feels like a different car. 3.42s would be a better choice though I do agree.
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Car: '86 Bird, 96 ImpalaSS, 98 C1500XCab
Engine: LG4, LT1, L31
Transmission: 700R4, 4L60E, 4L60E
Axle/Gears: 3.73 Tors, 4.88 spool, 3.73 Eaton
Re: gear upgrade recommendation!
For a daily driver, I'd want 3.42's.
For the car in my sig, 3.73's are perfect; it's an occasional driver, sometimes 200+ mile trips, and a bracket race / test'n'tune toy. 3.73's don't really hurt the mileage much. I can still squeeze 26 mpg out of it .....if I try
With a more radical motor setup for primarily strip use, 4.10's would be logical.
For the car in my sig, 3.73's are perfect; it's an occasional driver, sometimes 200+ mile trips, and a bracket race / test'n'tune toy. 3.73's don't really hurt the mileage much. I can still squeeze 26 mpg out of it .....if I try
With a more radical motor setup for primarily strip use, 4.10's would be logical.