3.08 gear

Chuck C · 04-17-2004, 06:46 PM

I currently have an O type rear end with a 3.08 gear and I noticed in a forum that there are rebuild kits for the o type rear end. I'm not sure if I should look for a new rear end or rebuild the old one. I'm also not sure about how much difference a 3.42 (or higher) gear would make in my acceleration but it is a thought. The car is a weekend driver and sees very little highway but I do like the driveability it has now, however I think my goal is to get the car in low 13's high 12's. Any thoughts about my gear options. Thanks.

Oldsguy · 06-18-2004, 04:59 AM

Chuck, if you go to a numerically higher gear your acceleration will be greater. The downside is, with all other things staying the same, you will not have as high of a top end. Don't feel bad, by Delta has a type O with 2.73:1 gears. I barely turn 2,000 rpm at 70mph. This is an improvement I have been considering. Are those kits complete with new gears and everything? What is the price?

Chuck C · 06-21-2004, 09:38 PM

I can't find the forum that I read about the rebuild kits for the o type dif. I gonna look around I'll post what I find.

Oldsguy · 06-25-2004, 04:26 AM

Ok, good luck and thanks for promising to fill me in.

monzaz · 09-05-2007, 02:35 PM

I have them if you need . Pretty sure there are 2 different size 'O' type rears. I believe the a-body 'O' type is different then the full size 'O' type rear. I know the cover gaskets are different. Jim

J D Race.com

04-17-2004, 06:46 PM	#1 (permalink)
Chuck C Junior Member Join Date: Mar 2004 Location: Oak Lawn, Il (Chgo suburb) Posts: 22	I currently have an O type rear end with a 3.08 gear and I noticed in a forum that there are rebuild kits for the o type rear end. I'm not sure if I should look for a new rear end or rebuild the old one. I'm also not sure about how much difference a 3.42 (or higher) gear would make in my acceleration but it is a thought. The car is a weekend driver and sees very little highway but I do like the driveability it has now, however I think my goal is to get the car in low 13's high 12's. Any thoughts about my gear options. Thanks. __________________ 1970~Cutlass~SX W-32

06-18-2004, 04:59 AM	#2 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,520	Chuck, if you go to a numerically higher gear your acceleration will be greater. The downside is, with all other things staying the same, you will not have as high of a top end. Don't feel bad, by Delta has a type O with 2.73:1 gears. I barely turn 2,000 rpm at 70mph. This is an improvement I have been considering. Are those kits complete with new gears and everything? What is the price? __________________ Dan '46 2 door

06-21-2004, 09:38 PM	#3 (permalink)
Chuck C Junior Member Join Date: Mar 2004 Location: Oak Lawn, Il (Chgo suburb) Posts: 22	I can't find the forum that I read about the rebuild kits for the o type dif. I gonna look around I'll post what I find. __________________ 1970~Cutlass~SX W-32

06-25-2004, 04:26 AM	#4 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,520	Ok, good luck and thanks for promising to fill me in. __________________ Dan '46 2 door

09-05-2007, 02:35 PM	#5 (permalink)
monzaz Senior Member Join Date: Jul 2006 Location: Richfield, Oh Posts: 85	O type rebuild kits I have them if you need . Pretty sure there are 2 different size 'O' type rears. I believe the a-body 'O' type is different then the full size 'O' type rear. I know the cover gaskets are different. Jim J D Race.com

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