86 Rear end info
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Instructor
Joined: Jan 2006
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From: Ol Dirty Durham NC
86 Rear end info
Got an 86 L98. The guy I bought it from said it was a Dana 33. Does anyone know what the stock gearing is for it? I know it is 2. something.
2 Questions
I just bought it so I am changing all fluids, I was going to put Red Line in it. What weight do I need to put in it?
I was thinking of going with a steeper gear, what ratio would be good?I have heard 3.07 gives it a little more umph.
Thx Chris
2 Questions
I just bought it so I am changing all fluids, I was going to put Red Line in it. What weight do I need to put in it?
I was thinking of going with a steeper gear, what ratio would be good?I have heard 3.07 gives it a little more umph.
Thx Chris
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Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The C4 Corvette uses either a Dana 36 ICA differential or a Dana 44 ICA differential. The 44 was used in all manual transmission cars starting with 1985. It sounds as though you have the Dana 36 which was used in all the C4 automatic transmission cars.
Neither model rear end has a "stock ratio". There are different standard and optional ratios installed based on the year, the transmission, and sometimes the body style of the car. While you are draining the oil (you DO have the rear cover off, right?) count the teeth on the ring gear and on the pinion. The numbers you come up with will be stamped onto the ring gear for conformation. Divide the number of ring gear teeth by the number of pinion teeth to determine the gear ratio.
In WHAT? With WHAT engine and WHAT modifications? For WHAT usage?
Than WHAT?
RACE ON!!!
Neither model rear end has a "stock ratio". There are different standard and optional ratios installed based on the year, the transmission, and sometimes the body style of the car. While you are draining the oil (you DO have the rear cover off, right?) count the teeth on the ring gear and on the pinion. The numbers you come up with will be stamped onto the ring gear for conformation. Divide the number of ring gear teeth by the number of pinion teeth to determine the gear ratio.
Originally Posted by CBC
I was thinking of going with a steeper gear, what ratio would be good?
Originally Posted by CBC
I have heard 3.07 gives it a little more MPH.
RACE ON!!!
