Does anyone know how much hp the the stock 9 bolt rear from an 89 iroc with 2.77 gears can handle? If its less than about 430, what would you recommend replacing it with while still keeping my rear disc brakes?
Thanks

 

Mine had 3.27 gears and my best times are below. I've switched to a beefed up 10 bolt because I needed a different gear ratio.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block almost ready for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley