I find it hard to hold my truck at the line when I launch. I once heard that guys are changing the rear wheel cylinders for a gm cylinder. Has anyone heard of this and if so what is the make and model of the truck they come from.

I also heard that with the gm cylinders you dont need an adjustable proportioning valve but it is close.

 

NAPA 4637337 is the part#. GM 1 ton wheel cylinders. Big improvement over OEM. No mods required, they use the same holes, bolts, and brakeline fitting.
Just change the cylinders, leave the prop valve alone.

 

Sweet thanks a lot

 

When I look up the part # napa says it is a left rear wheel cylinder. Are the drivers and passengers the same?

 

They are exactly the same. Napa carries three different grades of these cylinders, the $13 ones work great.

 

Sound good I will order them.