Changing rear gears
Thread Starter
Burning Brakes
Joined: May 2005
Posts: 1,094
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From: Coldville
Changing rear gears
I have 1986 vette with the stock gears in back and would like to upgrade to a 3.73, has anyone done this and how much did it cost to have it done at the shop?
Team Owner
Joined: Sep 2001
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From: Athens AL
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In an automatic? I'd advise against it. L98 requires nothing lower than 3.07.
Even if you change the intake to Superram.
You'll lose what top end you have.
Even if you change the intake to Superram.
You'll lose what top end you have.
Team Owner
Joined: Sep 2001
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From: Athens AL
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Originally Posted by rlane5
what if your car has decent ported heads with a Hot Cam and go through the traps (1/4) at 4500 rpm, could it use more gear than 3.07?
Randy
Randy
Le Mans Master
Joined: Sep 2004
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From: Conroe Texas
Originally Posted by rlane5
what if your car has decent ported heads with a Hot Cam and go through the traps (1/4) at 4500 rpm, could it use more gear than 3.07?
Randy
Randy
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Team Owner
Joined: Sep 2001
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From: Athens AL
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Originally Posted by rlane5
Rider,
The car can rev to 6500 rpm LT1 conversion with heads and hot cam
Randy
The car can rev to 6500 rpm LT1 conversion with heads and hot cam
Randy
Advanced
Joined: May 2005
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I put a Richmond 3.73 in my Dana 44, but have not built the motor yet. It will not be stock or a TPI but some thing else that revs. It took me along time to get it right, and every time you take it apart to redo all the adjustments on the pinion, ring gear, and every thing else you run the risk of damaging parts. I would definitely not recommend that you do this unless you have been turning wrenches all your life. You can get them for about $1500 + core charge. I spent about $400 in parts and tools (I made most of my own tools to do it). If I had to buy the GM tools I probably would have spent more than $1500