i swapped in an 88 disc brake rear end into my '86 trans am (used to have drums). what prop. valve do i need for the rear disk brakes?

ALSO:with this new prop. valve that i put in, will it work with the c4 brake kit? because im getting it in a month or two...

 

anyone...? i know i can probably use an '88 prop valve, but will c4 brakes work with it?

 

Posted by me WAAAYYY back when:


OK, prop valves now.(All GM P/Ns FYI..)

86-88 J50.................14089495
86-87 JE1.................14089496
86-88 J65.................14089497
89 J50 2ND Design.........10136839
89 J65,1LE 2ND Design.....10136840
89 J65 EXC Y82,1LE 2ND Des.10136841
89 J50 1ST Des.............14089495
89 J65 EXC 20TH Ann Y82,1LE 1ST Des..14089497
90 J41,J42................10136839
90 J65,1LE................10136840
90 J65(EXC 1LE)...........10136841
91 Cast Iron Brk Sys J41
Alum Brk Sys J42.......10136839
91 J65 4 Wh. Disc ........10164112


'86 car w/'88 rear: P/N 14089497

 

Forgot the 2nd part:

C4s should work but I also recommend swapping your master cylinder out for a J50 master, P/N 18014286, as this is what the 1LE cars call for, and that's what the C4 calipers essentially are.

Good luck with the rear calipers. I strongly suggest rebuilding them with the recall kit.

More info about this type of swap can be found here:


https://www.thirdgen.org/techbb2/sho...e&pagenumber=3

Ed

 

thanks ed! $50.75 for that thing? . oh well...brakes are pretty important . i didnt know about a recall kit...? i'll look into that too (got any info on that?) . thanks again ed

 

Just search for "recall kit", you'll get enough info.


Ed