Busted differential, (suggestions welcome)
Thread Starter
Instructor
Joined: May 2006
Posts: 175
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Busted differential, (suggestions welcome)
Well it happened this Saturday night. I went to romp on it and a big BOOM happened. It knocked my head liner down onto my head and a coasted to a stop. I guess my differential didn't like the 16 pounds of boost of the procharger. Anyways I have yet to pull the cover but my left tire axle stub is hanging out of the pumpkin about a half inch or so. My guess is that I snapped a yoke. What are people running for rear end combos that can handle 1000hp? This is my third rear end in the car and this one was suppose to have been heat treated and all that jazz. The first two went on a 400 hp engine and this last one roughly 800. Obviously its not tough enough. Im wondering if I should just put a Moser M9 in? lots of fab work though. Im all ears
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Here's an article about 12-bolt IRS differentials that IMHO would be worth a read.
http://www.hotrod.com/techarticles/1...dup/index.html
Yes, as a matter of fact I do happen to have a 12-bolt IRS myself, tho it was done by Henry's Machine Works, but the same guy (Pepe Estrada) who designed it did so for Tom's. Unfortunately, Tom's no longer builds them and AFAIK neither does Henry's, but I know a guy...
TSW
http://www.hotrod.com/techarticles/1...dup/index.html
Yes, as a matter of fact I do happen to have a 12-bolt IRS myself, tho it was done by Henry's Machine Works, but the same guy (Pepe Estrada) who designed it did so for Tom's. Unfortunately, Tom's no longer builds them and AFAIK neither does Henry's, but I know a guy...
TSW
Racer
Joined: Mar 2008
Posts: 315
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From: KY
Thread Starter
Instructor
Joined: May 2006
Posts: 175
Likes: 0
wow that looks like a boat load of work. I may just do an autofab.
http://autofabcart.net/1968-1982corv...4-linkkit.aspx
and a moser M 9. Big G is right someone should get one done and computerize it in cad for a program to make them. For now it looks like the solid axle kit is the way to go. The site says it can take 800hp but I wonder if one could make it live with 900? I seen a thread on this forum of some people using it with success.
http://autofabcart.net/1968-1982corv...4-linkkit.aspx
and a moser M 9. Big G is right someone should get one done and computerize it in cad for a program to make them. For now it looks like the solid axle kit is the way to go. The site says it can take 800hp but I wonder if one could make it live with 900? I seen a thread on this forum of some people using it with success.
Melting Slicks
Joined: Feb 2003
Posts: 3,053
Likes: 4
St. Jude Donor '03,'11
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
wow that looks like a boat load of work. I may just do an autofab.
http://autofabcart.net/1968-1982corv...4-linkkit.aspx
and a moser M 9. Big G is right someone should get one done and computerize it in cad for a program to make them. For now it looks like the solid axle kit is the way to go. The site says it can take 800hp but I wonder if one could make it live with 900? I seen a thread on this forum of some people using it with success.
http://autofabcart.net/1968-1982corv...4-linkkit.aspx
and a moser M 9. Big G is right someone should get one done and computerize it in cad for a program to make them. For now it looks like the solid axle kit is the way to go. The site says it can take 800hp but I wonder if one could make it live with 900? I seen a thread on this forum of some people using it with success.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
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Racer
Joined: Jul 2010
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From: Manahawkin NJ
The first question I would like ask is, what are you using the car for? If you are Drag racing there is no reason to have IRS. I know someone road racing a '70 Vette with a solid axle and a modified four link, so I don't see the need to keep the IRS.
No matter how strong you make the differential, with that much HP, the next problem will be u-joints.
If you are drag racing, get the book door slammers, http://www.summitracing.com/parts/CCA-158. This book will take all the guess work out of the modification. I would install a 9inch and have a set of street gears and a set of track gears. Swapping the third member would only take about and hour.
No matter how strong you make the differential, with that much HP, the next problem will be u-joints.
If you are drag racing, get the book door slammers, http://www.summitracing.com/parts/CCA-158. This book will take all the guess work out of the modification. I would install a 9inch and have a set of street gears and a set of track gears. Swapping the third member would only take about and hour.
