I have an 85 Z28 with a 7.5 10 bolt ring gear. It has drum brakes. I have the rotors, plates, and calipers from a 7.5 10 bolt disk rear. I know I will have to modify my mounting flange for the bolt pattern and would like to find out if I will have any other problems with it as well. I have extensive tools and can get just about anything done with help from a machinist. Help would be appreciated thank you, Mike

 

you will need the end of your axle turned down to fit inside the rotor. if the calipers are 84 and up they should fit fine. you should replace the brake lines and hoses and also the parking brake cables.

 

Thank you for the info and I did plan to do all new hoses and cables. I will send the axles out to be turned.......Mike.

 

When I did my 9" swap I went with a set of aftermarket units from a company called TSM. The kit uses an 11" rotor. I'm pretty sure they make a kit for drum braked thirdgen rears. They will sell just the brackets if you want or a whole kit. Calipers with emergency brake provisions are available. Total cost for the kit I have was less than $300.

TSM, 9635 Hwy. 85, #8, Littleton, CO 80125, 303/688-6882