Difference between '85 and '90-'92 Dana 44...

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Mar 5, 2008 | 06:09 PM

anchami79

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From: Plumas Lake CA

Difference between '85 and '90-'92 Dana 44...

I picked up a set of gears for a Dana 44 a while back. They're NOS and the tag says "90-92 Corvette", but the price was right and I had plans to put it in my '85 (Dana 44) so I bought it. It also says it's a 3.45 ratio which I belive was a stock option for those years. I've tried googling the part number on the tag (10448078) and any stamped numbers on the gears themselves, but I keep coming up empty.

Long post short, are the ring and pinion from different years interchangable?

Thanks,

Andy

Mar 5, 2008 | 08:12 PM

CFI-EFI

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From: The Top of Utah

Absolutely!

RACE ON!!!

Mar 6, 2008 | 06:30 AM

Tom Piper

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From: Mexico Beach FL

As far as I know, the differences are:
1) The case
2) Driveshaft pinion flange and seal.
3) The bolt holes in the case and cover for the lower strut rod brackets are smaller on the early unit.

Tom Piper

Mar 6, 2008 | 09:13 AM

ballonfoot

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From: Southlake Texas

Just a quick note for anyone reading this post....Dana 44 and Dana 'super 44' (which is what the Corvette has) are not the same. Don't mistakenly buy gears for a regular Dana 44.

Mar 6, 2008 | 11:32 AM

Demonic85

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From: sw Ohio

3.45 was probably a stock ratio for '90-'92. I think '85 only had 3.07 for the D44.

Mar 6, 2008 | 11:39 AM

anchami79

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From: Plumas Lake CA

Thanks guys, good info! Looks like I'm gonna do the swap.

Andy

Mar 6, 2008 | 11:43 AM

anchami79

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From: Plumas Lake CA

Quote:

Originally Posted by Demonic85

3.45 was probably a stock ratio for '90-'92. I think '85 only had 3.07 for the D44.

Sorry, thats what I meant.... I knew the stock ratio for mine was 3.07 with that being really the only option for the 4+3. The 90-92 (and probably other years) had the option for 3.45.

Mar 6, 2008 | 12:48 PM

AKS Racing

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From: Houston TX

3.54 in '89, lots of 3.33 in '90-'91, and 3.45s became very common when the vette got the LT engine.

3.08D44 was the rear for the '85-'88 std equiped cars with 4+3
Aaron