1hotnova
Newbie
Posts: 3
Reg: 06-20-23
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06-21-23 06:47 AM - Post#2859419
Hello everyone. I have a 1971 chevy nova and am currently restoring it. Got a question about the rearend on this puppy. It has a power glide 2 speed transmission and stock 10 bolt rear end. I am not a gear guy but I have currently exposed the gears to replace the gasket. I remember last time I drove this car about 20 years ago it had a roar. I wanted to either change the gears with new as stock or I even thought about putting Posi traction gears in it. It has a 305 small block in it as well. Gonna run a 205 60 15 possibly all around. Gonna drive and cruise but may be interstate driving as well. Any suggestions I gear sets for this without totally ruining the gas mileage, has good traction and does not tach the engine too much. Thanks any input.
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bobb
Super Senior Member
Posts: 6467
Loc: paradise
Reg: 09-05-03
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06-22-23 07:43 AM - Post#2859449
In response to 1hotnova
welcome to ct. did the oil come out clean? are the gears nice looking? you could always put in a lunchbox locker. but im not a big fan of them.
| 70 L camino, grampa engine, g-force 5 spd, road rage suspension. Pray first before all else fails. |
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 Shepherd
Valued Contributor
Posts: 3192
Loc: Lake George, NY
Reg: 11-11-15
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06-22-23 12:20 PM - Post#2859456
In response to 1hotnova
What gear ratio is in it now?
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1hotnova
Newbie
Posts: 3
Reg: 06-20-23
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06-24-23 05:49 AM - Post#2859514
In response to bobb
The oil looked good considering. Not familiar with gears and rear ends. The only numbers I saw were 3969340 NF , GM72 , G290 and that’s it. A buddy seems to think the setup currently is 3.08 gear setup.
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Shepherd
Valued Contributor
Posts: 3192
Loc: Lake George, NY
Reg: 11-11-15
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06-24-23 10:08 AM - Post#2859534
In response to bobb
The ring gear should have 2 numbers like 10 31, which when divided is 3.10. Most common was 2.73,
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