Z28ricer

iTrader: (2)

Is the backing plate pattern the same on the 9 bolt as a 10/12 bolt, I want to get the aerospace components kit for my rear but dont know if the plates will bolt up help ! Thanks.

ede

this has came up before and i don't think they're the same. you may be able to transfer the hole(s) you need and drill and tap as needed. the 9 bolt isn't very popular, or has limited usage on thirdgens.

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ICON Motorsports

1st & 3rd

AlkyIROC

Differences from disk to drum are different but I think drum to drum or disk to disk are the same.

The 9 bolt is stronger but isn't popular in north america because of the few parts that are available. If you know someone in AU who can ship you needed parts then it's worth using but then after the cost of shipping it makes 10/12 bolts affordable. Just because parts are available somewhere else in the world doesn't make the product a good deal.

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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
461 Big Block installed and 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

The ODB

noway, but it's easy to modify to make about anything fit.