Horsepower to differential
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
How much one attempts to put thru a stock 10-bolt and how much abuse it will take are different issues, entirely.
FWIW, don't have any hard HP/TQ numbers, but the revised 427 BB going back in my shark is modeling up to be ~590 HP / ~530 TQ at the crank, and I wouldn't think of putting a stock 10-bolt behind it, as I learned long ago that you don't necessarily have to be drag racing and/or on slicks to break a 10-bolt. ...and, I've broken a couple of them behind autos too.
TSW
FWIW, don't have any hard HP/TQ numbers, but the revised 427 BB going back in my shark is modeling up to be ~590 HP / ~530 TQ at the crank, and I wouldn't think of putting a stock 10-bolt behind it, as I learned long ago that you don't necessarily have to be drag racing and/or on slicks to break a 10-bolt. ...and, I've broken a couple of them behind autos too.
TSW
Racer
Joined: Feb 2009
Posts: 273
Likes: 11
From: Algona, WA
About 700 with the currant tune, auto trans 3.08 gears, all original. Over 100 1/4 mile pass's with obout 25 races and 2000 street miles.
Two day race this weekend. Who knows this might be the end
...or not!
But I do have AAA
Two day race this weekend. Who knows this might be the end
...or not!But I do have AAA
Racer
Joined: Oct 2003
Posts: 424
Likes: 9
From: Killeen Texas
700 hp to a stock diff? How about the aluminum (ie; '81 w/ an automatic and 3:08 gears)? I've heard that the aluminum can handle up to about 400hp and then it's a gamble after that. Some input from experienced guys, please. Thanks in advance... And: is that 400hp at the crank or at the back wheels? Thanks again.
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Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Racer
Joined: Oct 2003
Posts: 424
Likes: 9
From: Killeen Texas
Yes, I am aware of that. I was asking the question, as I have the stock rear and 3:08s and have made afew upgrades to my engine and intend to go into the engine sometime after the summer. Just was wondering how much abuse a rear like mine can take and if the HP guys are talking about, approx. 400, is crank shaft or rear wheels. I'm thinking crank, but not f/ sure. Thanks again in advance.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Motorhead is pushing 600 HP in front of a TKO 600 and running a stock aluminum rear end. Before that he ran a 500 HP 406 for over 25,000 miles. Same rear end. Seems like some last well and some come apart easily. Luck of the draw I guess. Run it till it breaks and replace it with something stronger or send it to Tracdogg for a buildup.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
tracdogg2 has a web site, percision corvette differential.
The vette in your signature looks pretty sweet, what does it turn?
The vette in your signature looks pretty sweet, what does it turn?
Racer
Joined: Feb 2009
Posts: 273
Likes: 11
From: Algona, WA
It's currently set up for 10.50 heads up. Ran this weekend and ran 10.507 and 10.488 @ 134mph I take out 9deg. of timing and run a 6inch. air filter to slow it down for the 10.50 index. Lost first round on a red light. Pushed it thru the lights on the brake.
Dave
Last edited by d555; Jun 11, 2012 at 10:15 PM.
Safety Car
Joined: Jan 2009
Posts: 3,736
Likes: 56
From: anchorage ak
9.90's on motor, with a best of 9.78@137mph. On spray 250 shot 8.66 @156 best.
It's currently set up for 10.50 heads up. Ran this weekend and ran 10.507 and 10.488 @ 134mph I take out 9deg. of timing and run a 6inch. air filter to slow it down for the 10.50 index. Lost first round on a red light. Pushed it thru the lights on the brake.
Dave
It's currently set up for 10.50 heads up. Ran this weekend and ran 10.507 and 10.488 @ 134mph I take out 9deg. of timing and run a 6inch. air filter to slow it down for the 10.50 index. Lost first round on a red light. Pushed it thru the lights on the brake.
Dave
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
