D36 or D44 ?
Thread Starter
Racer
Joined: Jul 2002
Posts: 304
Likes: 0
From: Plant City Fl.
D36 or D44 ?
I also have a rear end question. I have a 93 LT-1 auto, I'm looking to upgrade from my 2.59 gear set to a 3.54. I have read some of the other entries on this subject but I haven't been able to determine an answer from what I've read. How do you determine if you have a D36 or D44 style rear end ? Also, I am an ex-automotive tech (23yrs. in the business) and have set up many rear ends in the past. I curious as to how most of your changes have been done. I mean have most bought the complete carrier from a supplier or have most of you replaced it yourself or had it done. I have the tools and the know how and figure I could save some bucks but I was just wondering how most of you got it done.
Team Owner
Joined: Apr 2000
Posts: 27,818
Likes: 8
From: CT
Re: D36 or D44 ? (95AquaC4)
I'm with 95AquaC4.
A former 2.59 owner :U wth we're they thinking( :rolleyes: I know, gas mileage..but you get my point) putting those pathetic gears in our cars? Even with my torquey motor, it kinda lugged. I had such a grin when the D44 and 3.45's went in! NIGHT and DAY.
A former 2.59 owner :U wth we're they thinking( :rolleyes: I know, gas mileage..but you get my point) putting those pathetic gears in our cars? Even with my torquey motor, it kinda lugged. I had such a grin when the D44 and 3.45's went in! NIGHT and DAY.
Le Mans Master
Joined: Aug 2001
Posts: 5,626
Likes: 1
From: Cinti,OH 2004 Z06
CI 4-5-6-7-8-9-10 Veteran
St. Jude Donor '07-'09
Re: D36 or D44 ? (ALLR RED)
Just did mine last week - from 2:59 to 3:55 plus a 2800 stall speed
converted :D U will luv it :yesnod:
:cheers:
converted :D U will luv it :yesnod:
:cheers:
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: D36 or D44 ? (ALLR RED)
I have a 93 LT-1 auto,
made for the 36 were the elusive, 3.31's. Unless you buy after market
gears made for a 2 series case, you will have to change your diff case,
also. By "diff case", I am refering to the internal case that the ring gear
bolts to. The same situation applies when making a similar ratio change in
a 44. I can provide the exact point where the cases change if anyone is
interested. Good luck.
[Modified by CFI-EFI, 9:14 PM 7/16/2002]
Safety Car
Joined: Mar 2000
Posts: 3,620
Likes: 2
From: Hillsboro OR
Re: D36 or D44 ? (ALLR RED)
I did my D44 recently. I used the following tools to set up the rear.
Bearing separator, press, 3/4" drive socket set for the pinion nut and for pressing in bearings and races, inch pound torque wrench with three socket drive adapters (1/4 to 3/8, 3/8 to 1/2, 1/2 to 3/4), 5/8" brass punch., angle iron to bolt the carrier case to, two C clamps to hold the angle iron to the work bench, dial indicator and holder, caliper for measuring shims, 500 ft lbs air impact wrench for use on the bearing puller and torquing the pinion nut, two prong (can use three prong also or one that can be bolted to the bearing separator) gear puller. I also needed a four foot pry bar to tighten the pinion nut. The gear set I got came with a crush sleeve. The stock gears use shims to set the pinion preload instead of the crush sleeve.
Bearing separator, press, 3/4" drive socket set for the pinion nut and for pressing in bearings and races, inch pound torque wrench with three socket drive adapters (1/4 to 3/8, 3/8 to 1/2, 1/2 to 3/4), 5/8" brass punch., angle iron to bolt the carrier case to, two C clamps to hold the angle iron to the work bench, dial indicator and holder, caliper for measuring shims, 500 ft lbs air impact wrench for use on the bearing puller and torquing the pinion nut, two prong (can use three prong also or one that can be bolted to the bearing separator) gear puller. I also needed a four foot pry bar to tighten the pinion nut. The gear set I got came with a crush sleeve. The stock gears use shims to set the pinion preload instead of the crush sleeve.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: D36 or D44 ? (ALLR RED)
go to 3.54's if you have to do a fair bit of hwy driving, 3.73s if you just do city stuff mostly
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Thread Starter
Racer
Joined: Jul 2002
Posts: 304
Likes: 0
From: Plant City Fl.
Re: D36 or D44 ? (vader86)
Yea, I pretty much decided on the 3.54 set up I think it will give me what I'm looking for without being to radical. I very aware of of how gear changes affect the launch of your vehicle. In my drag racing days I used to run 5 and sometimes 6 series sets. Thanks to all who responded you've been a big help.