Ring and Pinion Brands??
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
Ring and Pinion Brands??
I have a 1986 coupe with a Dana 36 and a 2.59 rear. Last year I had a rear rebuilt with a 3.54 ratio. I never installed it because I think its too much gear for a mostly stock 86. I purchased my 3.54 from Tom's Differentials, which is US Gears. Tom's doesn't have a 3.07 for my Dana 36. He only has a 3.54 or 3.73.
What is a good brand to purchase a 3.07 from??
What is a good brand to purchase a 3.07 from??
Team Owner
Joined: Sep 2003
Posts: 25,348
Likes: 2,728
I have a 1986 coupe with a Dana 36 and a 2.59 rear. Last year I had a rear rebuilt with a 3.54 ratio. I never installed it because I think its too much gear for a mostly stock 86. I purchased my 3.54 from Tom's Differentials, which is US Gears. Tom's doesn't have a 3.07 for my Dana 36. He only has a 3.54 or 3.73.
What is a good brand to purchase a 3.07 from??
What is a good brand to purchase a 3.07 from??
Pro
Joined: Jun 2007
Posts: 626
Likes: 2
From: Coquitlam British Columbia
I have a 1986 coupe with a Dana 36 and a 2.59 rear. Last year I had a rear rebuilt with a 3.54 ratio. I never installed it because I think its too much gear for a mostly stock 86. I purchased my 3.54 from Tom's Differentials, which is US Gears. Tom's doesn't have a 3.07 for my Dana 36. He only has a 3.54 or 3.73.
What is a good brand to purchase a 3.07 from??
What is a good brand to purchase a 3.07 from??
Note...Im retired and like it
Bill
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
Gears
thanks...
Pro
Joined: Jun 2007
Posts: 626
Likes: 2
From: Coquitlam British Columbia
Bill
Racer
Joined: Jan 2012
Posts: 440
Likes: 2
From: Springfield Ohio
I had it documented but it was a few years aqgo. Memory ...60 mph about 200 rpm more.....1750 rpm to just under 2000 rpm......75 mph about 350 more rpm than stock. That compares 2:73 vs 3:54 gears. Did not feel it was screaming. I baby it but like to get on it every so often and when I did didnt feel any difference in sound just quicker.Hope that helps.
Bill
Bill
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
Gears
thanks..
Pro
Joined: Jun 2007
Posts: 626
Likes: 2
From: Coquitlam British Columbia
Hope this helps.
Bill
Last edited by UNCLEBILL; Feb 7, 2013 at 08:29 AM. Reason: mispell
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Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
Gears
No; did not have to realign but had to replace the drive and driven plastic gears on tailshaft for speedo. The tough part to find is the VSS. The VSS for 2:59 and 2:73 have a common VSS for the driven plastic gear of 34-39 teeth. You will need a VSS from a 3:07 setup as this accepts 40-45 tooth driven gear. The 3:54 is a 43 tooth so this is okay. You will have to find a used VSS off a 3:07 as I did as they are not sold anymore just the VSS you have now at present...go figure!!!! The VSS has the tooth range stamped in the part so you can be sure of what you find. I had the speedo checked by GPS and it is accurate. The gas mileage drops about 1-1-1/2 mpg but mine is not a daily driver just my retirement fun toy. Could be how I drive?
Hope this helps.
Bill
Hope this helps.
Bill
Thanks again for all the help
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Thanks again for all the help. When I rebuilt the trans I installed the correct drive and driven gears for the 3.54. So for almost two years the speedo has been off (almost 10mph at highway speeds). I think you convinced me to install the new rear. My mpg dropped with my stall converter so, I will probably loose a little more mpg. My car is a good weather driver also.
Thanks again for all the help
Thanks again for all the help
back on topic if the converter is locking and locking early during part throttle operation, the mileage hit from a higher than stock converter should be minimal in town and zip nada zero, on the highway.
Mike
Thread Starter
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
Gears
Is your stall converter a locking one? I didn't notice a drop in mileage with any of my converter changes. I started with stock went to a 2800 midwest and finally to 3500 vig. (I broke the midwest) I did notice a slight change when I went from 2.59 to 3.45 and a bigger change from stock engine to ported heads, big lumpy cam, etc.
back on topic if the converter is locking and locking early during part throttle operation, the mileage hit from a higher than stock converter should be minimal in town and zip nada zero, on the highway.
Mike
back on topic if the converter is locking and locking early during part throttle operation, the mileage hit from a higher than stock converter should be minimal in town and zip nada zero, on the highway.
Mike
Its a locking converter but; I have it on a switch because it locks up way too early for me. I usually only lock it up if I am on the highway. Its my driving style, not the car for the loss of mpg.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
Lower numerically gearing is good, the 2.59s are only installed in C4s to make CAFE standards. I have 3.45s and 2k is a little above 70mph.
If your just changing the pumpkin you should be ok without a new alignment. However , I always err on the side of caution since F1 GSD3s are so freaking expensive.
Mike
If your just changing the pumpkin you should be ok without a new alignment. However , I always err on the side of caution since F1 GSD3s are so freaking expensive.
Mike
Last edited by aboatguy; Feb 8, 2013 at 11:52 PM.