3rd gen camaro rearend

mike britt · 12-29-2015, 11:01 PM

Did GM ever put a bigger rear in a 3rd gen Camaro than the 7.5 in. that's in my 90 IROC?

Dragsinger · 12-29-2015, 11:12 PM

Mike,

no, and it would have been a great thing if they had.

For a stocker build a 12 bolt housing bolt in upgrade is the usual option.

mike britt · 12-29-2015, 11:25 PM

So I 'll have to go aftermarket, Moser, Strange. Are those legal for stock?

ss3011 · 12-30-2015, 12:33 AM

Some Pontiac Firebirds, and Trans Ams came with a 9 bolt "Australian" rearend, which I think was a Dana 44 .

Dragsinger · 12-30-2015, 03:47 AM

Mike,

aftermarket replacement housings are OK.

Dwight Southerland · 12-30-2015, 08:38 AM

Quote:

Originally Posted by ss3011

Some Pontiac Firebirds, and Trans Ams came with a 9 bolt "Australian" rearend, which I think was a Dana 44 .

There was actually a Dana 44 availalbe for a short period of time in the '83-'86 time frame. I have seen a couple, but they were OTC and few were sold.

Bill Diehl · 12-30-2015, 02:06 PM

the aussy 9 bolt is stronger than you would think, in 88/89 I had strange make a set of axles for it, lack of gear ratios was a downfall but the car did run well into the nine sec range at almost 145 mph at 3700#'s

unless the car has it already (the OP does not) I would not waste my time with that though when better housing choice are available

mike britt · 12-30-2015, 10:38 PM

Thanks guys for the info. I have all winter to think about a rear end for this thing, it's one of the last things I'll have to do anyway.

brian schuetta · 12-31-2015, 06:29 PM

If you can find a 69',70' Chevelle rear end they will fit with a little fabrication. They are an inch shorter backing plate to backing plate than a stock Camaro 7.5. I went this route when money was tight 15 years ago. If you have the money just go with an aftermarket piece. I used the stock axles and mini spool with steel caps for a couple years then went to Moser axles and spool. As I remember the cost then with mounting and rear end cost was $540 before the mini spool that used the stock carrier. Good Guys Race Cars in Houston did the work.

mike britt · 12-31-2015, 10:19 PM

How strong is the 7.5 rear end? will it stand up to a 305? The lowest gear I can find for it is a 4.56, not sure if that'll be enough.

12-29-2015, 11:01 PM	#1
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 142 Likes: 216 Liked 43 Times in 19 Posts	3rd gen camaro rearend Did GM ever put a bigger rear in a 3rd gen Camaro than the 7.5 in. that's in my 90 IROC?

12-29-2015, 11:12 PM	#2
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,759 Likes: 5 Liked 99 Times in 60 Posts	Re: 3rd gen camaro rearend Mike, no, and it would have been a great thing if they had. For a stocker build a 12 bolt housing bolt in upgrade is the usual option. __________________ Larry Woodfin 471W

12-29-2015, 11:25 PM	#3
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 142 Likes: 216 Liked 43 Times in 19 Posts	Re: 3rd gen camaro rearend So I 'll have to go aftermarket, Moser, Strange. Are those legal for stock?

12-30-2015, 12:33 AM	#4
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 891 Likes: 64 Liked 227 Times in 106 Posts	Re: 3rd gen camaro rearend Some Pontiac Firebirds, and Trans Ams came with a 9 bolt "Australian" rearend, which I think was a Dana 44 .

12-30-2015, 03:47 AM	#5
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,759 Likes: 5 Liked 99 Times in 60 Posts	Re: 3rd gen camaro rearend Mike, aftermarket replacement housings are OK. __________________ Larry Woodfin 471W

12-30-2015, 02:06 PM	#7
Bill Diehl Member Join Date: Dec 2013 Posts: 311 Likes: 2 Liked 9 Times in 8 Posts	Re: 3rd gen camaro rearend the aussy 9 bolt is stronger than you would think, in 88/89 I had strange make a set of axles for it, lack of gear ratios was a downfall but the car did run well into the nine sec range at almost 145 mph at 3700#'s unless the car has it already (the OP does not) I would not waste my time with that though when better housing choice are available __________________ __________________ Bill Diehl B200 C/D STK

12-30-2015, 10:38 PM	#8
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 142 Likes: 216 Liked 43 Times in 19 Posts	Re: 3rd gen camaro rearend Thanks guys for the info. I have all winter to think about a rear end for this thing, it's one of the last things I'll have to do anyway.

12-31-2015, 06:29 PM	#9
brian schuetta Member Join Date: Apr 2005 Location: san antonio tx Posts: 255 Likes: 5 Liked 28 Times in 15 Posts	Re: 3rd gen camaro rearend If you can find a 69',70' Chevelle rear end they will fit with a little fabrication. They are an inch shorter backing plate to backing plate than a stock Camaro 7.5. I went this route when money was tight 15 years ago. If you have the money just go with an aftermarket piece. I used the stock axles and mini spool with steel caps for a couple years then went to Moser axles and spool. As I remember the cost then with mounting and rear end cost was $540 before the mini spool that used the stock carrier. Good Guys Race Cars in Houston did the work.

12-31-2015, 10:19 PM	#10
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 142 Likes: 216 Liked 43 Times in 19 Posts	Re: 3rd gen camaro rearend How strong is the 7.5 rear end? will it stand up to a 305? The lowest gear I can find for it is a 4.56, not sure if that'll be enough.