i remember seeing a picture of the adapter for mounting a gm master to a toyota brake booster.it was 1/4 plate with two sets of bolt holes. one set of bolt holes were recessd.the picture had the dimensions for drilling the holes highlited. does anyone have this photo to share, thankyou. :homer:

http://www.rockstomper.com/catalog/brakes/gmtoymaster.htm

http://www.rockstomper.com/images/products/brakes/mckit02.jpg

I bought the adaptor from Scott. It was less than $40.00 delivered.

what's wrong with the toyota master? marlin has the kick-ass masters for sale for $97 i believe. at least that's what he had at the swap meet in petaluma. and they were brand new!!! :D

what's wrong with the toyota master? marlin has the kick-ass masters for sale for $97 i believe. at least that's what he had at the swap meet in petaluma. and they were brand new!!! :D

Depending on your application, you may not need the GM master cylinder. Are you planning on running 1 ton axles?

Shameless linked form mud. This should answer your questions.
http://forum.ih8mud.com/showthread.php?t=148512&highlight=corvette+master

yes i will be running 1tons.i have thegm with the oversized bore so i get full brake effect with less pedal travel.iv never been satisfied with my cruiser braking power and id like to beef it up.my master is about to take a dump so im gonna run the gm master with my yota axles for the last of the wheeling season. thanks for the firm answers.i think im gonna just order it and save some time. "how satisfied will i be with this setup,is it that much better."anyone know from experience?

My m/c took a dump on me at Katemcy. I bought this setup and it works well. I had to cut the ends off of the brake lines and put on new ones that were the right size for the gm m/c ,then reflare the brake lines. It was easier than replacing the entire brake line. There may be some adapters out there to eliminate this but I didnt find any.

this really bites" rockstomper wont let me order the adapter without the master its self too. what bore size is rockstompers master cylinder,i really dont want another master but if its 1 and 5/16 then i will reconsider.is there anybody else who makes the adapter.

what's wrong with the toyota master? marlin has the kick-ass masters for sale for $97 i believe. at least that's what he had at the swap meet in petaluma. and they were brand new!!! :D

I'd love a Toyota master... but I need something with >1" bore. Words cannot express how much I HATE that old-style GM master cover that always leaks.

1 1/4" would probably be great for my rig.

If you have a drill and a couple of drill bits and a hole saw, and some type of bandsaw or sawzall you could easily make the adapter from some 1/4'' plate. Just take a look at the pic above, get a few measurements for the bolt pattern and make it happen. I dont know what the bore is, but it is a 1 ton m/c and will lock up my 38s pretty easily.

http://pirate4x4.com/forum/showthread.php?t=598023

3rd post with pictures.

Any Toyotas with a bigger bore by chance?

I had heard later model FJ's? Maybe Tundra?

i made one ....it's pretty easy..... i had an old booster laying arouns to check for fit.......
i think around pg 8 or 9 on my build thread is the rest of the pics......the first mc i used was crap so later in the thread it dhows the right one assembled

good luck

Any Toyotas with a bigger bore by chance?

I had heard later model FJ's? Maybe Tundra?


FJ80. Marlin keeps them in-stock.

the master i used was from a77 to 82 vette.....made for disc front and rear

part #mc39052pg raybestos

1 1/8" bore

done with proportioning valve

note: i plumbed the front disc to the rear port and viceversa, per fjcharles and it works berfect

FJ80. Marlin keeps them in-stock.

His are 1" bore, unfortunately.. :(

The LB6 and LB7 Chevy brake setups are 1-1/8" & 1-1/4" respectively, and have the newer plastic reservoir that's very difficult to make leak.. '95 C2500 gasser is an app that used 'em.