Full Size Jeep Network

Got an '85 CJ with 33's that could use better brakes.

Will the booster and MC from an'84 GW fit in the CJ with a 4.0 head, intake and FI. I think it's a dual diaphragm.

Was going to sell the parts but had this thought. Can't take a look because the parts are here and the Jeep is there. Thought I'd ask before I taking them home with me to check.

Doubt it will clear the intake. The 4.0 intake hits the booster on FSJs, and they are wider than CJs.

I think you would have to go after market. There are several small diameter dual diaphragm boosters out there. I think willwood has one, among others.

I was afraid of that. What did the Wranglers use for power brakes?

Not to mention the master cylinder reservoir would hit the hood, hard.

Do you have power or manual brakes now? The answer makes a big difference.

Nonpower.

My quest is mainly to get rid of the GW parts. If it was an easy mod to put them in the CJ I'd keep them. Guess I'll post them in the parts forum.

I put a single diaphragm booster in a CJ with a 360 in it - no idea what a 4.0L head conversion looks like under the hood.
The thing to remember is the CJ uses a linkage on the booster to drop it down (hood clearence), so the rod on the GW booster was too long, I cut it and put the bolt flat back on in the correct length, I had the measurement because my CJ8 had factory power brakes - the booster was shot, and NO ONE sold replacements