Anyone done the S4 4 lug conversion to a GSL-SE and ran the larger 4 piston caliper like on the TII?
I have done some searching but only found 5 lug info.

I am think this route so I can keep the stock gsl-se lug pattern but be able to upgrade to the larger 4 piston calipers.

 

Yes i did it, just re-drill the 5 lug front rotors to 4X114.3, and get the 2nd gen 4lug hubs. and you need longer wheel studs, ARP #100-7708 Late model GM 12mm X 1.50" from Summit Racing will work.

 

^^^ does work but I don't like redrilling things. If you want it done properly get some custom hubs and caliper brackets made for the front. Cost me about $AU300

 

Good 4 U

 

Interesting...... so all you did was buy s5 cross drilled hubs and redrilled them to the se bolt pattern? What bearings are you useing and what spindle?

 

Buy the Respeed 1978-1985 big brake kit and follow the instructions,very easy to do
www.mrcmfg.com/respeed/catalog/index.php

 

has any one else done a 4 piston swap?

I dont care for the 5 lug swap,just the bigger rotors and 4 piston calipers.

Any pics?
Will the GSL SE brake master work?
How about the proportion valve?

What do they mean by bigger bearing front brakes,the GSL SE set up?
http://www.mrcmfg.com/respeed/catalo...dfe40d7f922414

 

https://www.rx7club.com/showthread.p...&highlight=lug

thanks Gonzz