GM Wheel Cylinder ?
 

I was checking my rear breaks this week to see how much life they have in them. There is still a few more miles left but one wheel cylinder looks like it is starting to leak. I have been reading about the people who have changed to the GM cylinders. This is on the 99 2500 truck and I have a few questions.

Are there any mods that need to be made or does everything fit the same?
Does it effect the ABS any?
What are your impressions of the change?
Do you have the part #s at hand?

Thanks in advance for any information. I will start planning for rear breaks in the next few weeks.

Arcc

No mods were neeed on my 98.5.
IMHO a very worth while change.
Sorry I dont remember the part # off hand but if you do a search on Nappa wheel cyl I'm sure you will find it eazy.

NAPA cylinders
 

"TruStop" Wheel Cylinder Assemby #4637337. I've got two of them right here, just waiting for it to get a little warmer....

That is about the best mod you can make to your brakes.

It's a perfect fit, no other mods needed, just a lttle brake fluid to bleed.
You'll definitely feel and like the difference.
The 4637337 number will cross over at most auto parts stores.

what's the difference between the GM and Dodge wheel cylinder?


Dan

I believe the differance is going from a 27mm cylinder to a 31mm cylinder. It requires a lot less pedal pressure to stop AND the truck won't nosedive but instead just kinda squats and stops.
Tom

Don't the 2500's use 24mm wheel cylinders, and the 3500's used the 27mm's.

The GM's ARE 30mm, that I'm sure of:D.

Either way, it doesn't matter...It's like a 25% increase in rear braking power[eyecrazy]

Chris

Remember, many regular parts stores don't understand cross-referencing. If they ask, just say it's for a '95 Chebby 1 ton, 2wd, Dually.

3500s have always had 27mm cylinders, 2500s had 24mm until '97 then switched to 27mm.
Going from a 27mm to a 30mm increases braking force by 23%, very noticable.

did mine last weekend
 

best 22$ bomb yet

may only be 23%

feels like much more

don't wait ... go do it now

The 3500 single rears are 27mm, and the dually is 30mm. The napa number was a (46)37337, and that fits a dually.

infidel is referring to what was available on the Dodges. You are reffering to GMs.

Sorry, I just realized that this morning[eyecrazy] . Why cant they go back to the way it was back when Ford was F1,2,3,etc , and Dodge was 100,200,300,etc , and GM was ....well, whatever they felt like 3100,3600?

I had to bend the rear brake lines a little. I think because I have the last version of the rear drum brakes systems. :( I noticed it, and would do it again. No noticed affect on ABS. Only felt it once or twice, that was after the cylinder mod. Don't remember if it ever kicked in before. -Bob