D44 rear Question
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Le Mans Master
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From: Jenison MI
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St. Jude Donor '06
D44 rear Question
Will a d44 with 3.33 out of a 85 with a 4-3 work in my 93? I just want to make sure that there are no differences other then the gear set.
Le Mans Master
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it can work, but you will have to either 1) drill the camber rod bracket holes to .50 for the bolts to go through, or 2) use the camber rod brackets from the 85. everything else is pretty much the same, if you are just changing out the center section or bat wing
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Le Mans Master
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From: Jenison MI
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St. Jude Donor '06
Originally Posted by Sleazy Rider
it can work, but you will have to either 1) drill the camber rod bracket holes to .50 for the bolts to go through, or 2) use the camber rod brackets from the 85. everything else is pretty much the same, if you are just changing out the center section or bat wing
Team Owner
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3.33 never came in an 85.
3.33 only came in late 89-90 6speeds in the D44.
A 3.31 came in 84, but it was in a D36.
3.33 only came in late 89-90 6speeds in the D44.
A 3.31 came in 84, but it was in a D36.
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Le Mans Master
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From: Jenison MI
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St. Jude Donor '06
Originally Posted by vader86
3.33 never came in an 85.
3.33 only came in late 89-90 6speeds in the D44.
A 3.31 came in 84, but it was in a D36.
3.33 only came in late 89-90 6speeds in the D44.
A 3.31 came in 84, but it was in a D36.
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Le Mans Master
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From: Jenison MI
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St. Jude Donor '06
ok I just found this...
Automatic Transmission
Four-speed Turbo Hydra-Matic (TMH 700-R4)
floor-mounted gear shifter
gear ratios
1st = 3.06:1
2nd = 1.63:1
3rd = 1.00:1
4th = 0.70:1
Rev = 2.29:1
Final drive ratio: 2.73:1
Manual Transmission
Four-speed manual with overdrive
floor-mounted gear shifter
gear ratios
1st = 2.88:1
2nd = 1.91:1
3rd = 1.33:1
4th = 1.00:1
overdrive = 0.67:1
Rev = 2.78:1
Final drive ratio: 3.07:1 (optional 3.31:1)
Planetary overdrive ratios:
2nd = 1.28:1
3rd = 0.89:1
4th = 0.67:1
does this seem right?
Automatic Transmission
Four-speed Turbo Hydra-Matic (TMH 700-R4)
floor-mounted gear shifter
gear ratios
1st = 3.06:1
2nd = 1.63:1
3rd = 1.00:1
4th = 0.70:1
Rev = 2.29:1
Final drive ratio: 2.73:1
Manual Transmission
Four-speed manual with overdrive
floor-mounted gear shifter
gear ratios
1st = 2.88:1
2nd = 1.91:1
3rd = 1.33:1
4th = 1.00:1
overdrive = 0.67:1
Rev = 2.78:1
Final drive ratio: 3.07:1 (optional 3.31:1)
Planetary overdrive ratios:
2nd = 1.28:1
3rd = 0.89:1
4th = 0.67:1
does this seem right?
Team Owner
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From: Athens AL
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3.07 is what should come in the 85 manuals. What you have there is 84 information.
Last edited by vader86; Dec 6, 2005 at 12:01 PM.
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Originally Posted by Sleazy Rider
it can work, but you will have to either 1) drill the camber rod bracket holes to .50 for the bolts to go through, or 2) use the camber rod brackets from the 85. everything else is pretty much the same, if you are just changing out the center section or bat wing
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Race Director
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From: The Top of Utah
Originally Posted by vader86
3.07 is what should come in the 85 manuals. What you have there is 84 information.
Although that '85 couldn't have been built with 3.33 gears, neither could the 1993, fsr402 plans to put them in. Just because GM didn't offer it, doesn't mean someone didn't do it.
RACE ON!!!
Thread Starter
Le Mans Master
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From: Jenison MI
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St. Jude Donor '06
Originally Posted by CFI-EFI
3.07:1. is also what came in the '84 automatics. That chart(?) is a mishmash of info. It has the auto supplied with a 2.73 rear, which was NOT available in 1984 and an optional, for the manual, of 3.31, which was ONLY available in 1984 (optional for both auto or manual). To add insult to injury, the 3.31 gears were only made for the Dana 36.
Although that '85 couldn't have been built with 3.33 gears, neither could the 1993, fsr402 plans to put them in. Just because GM didn't offer it, doesn't mean someone didn't do it.
RACE ON!!!
Although that '85 couldn't have been built with 3.33 gears, neither could the 1993, fsr402 plans to put them in. Just because GM didn't offer it, doesn't mean someone didn't do it.
RACE ON!!!
Thanks for the info though. I emailed the guy about the gears, now just waiting to hear back. I knew I could count on you guys to give me the info.
Race Director
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Posts: 17,298
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From: The Top of Utah
Fact: Any C4 diff will fit any other C4.
Fact: A 1985 4+3 car left the factory with a Dana 44.
Fact: The only C4 rear end available with 3.33 gears was (is) the Dana 44.
Fact: *I* think you will have no problems.
RACE ON!!!
Fact: A 1985 4+3 car left the factory with a Dana 44.
Fact: The only C4 rear end available with 3.33 gears was (is) the Dana 44.
Fact: *I* think you will have no problems.
RACE ON!!!