3406b valve set

They’re different brakes but you can switch an engine from one to the other with no problems. It’s a little more work than to just a re-re a Jake head, the hardware all has to be changed too, but it’s not a biggie.

 

The 349A is the super Jake has a taller Jake riser between the rocker box and valve cover. It is also a pain to rebuild sometimes the housings are scored to the point you better know a good machinist real well to get it fixed. Also very hard to find.

The PAC-36 is the next best alternative and what I run. It fits under the standard risers and as said a minor hardware change and your good to go.

 

Never thought of availability, but i guess it would have put a cramp in that whole program when they went IVA on the C15’s. I haven’t had a minutes trouble with the 2 P36’s I have. They’ve both had a few kits into them at this point but no trouble beyond that. My ‘89 and ‘91 were both ordered with Brakesaver engines, I had the PacBrakes installed when they came in. Those two go forever on a set of brake linings. Nearly twice the mileage of the C15’s that only have compression brakes.

 

I agree my 36’s are the way to go in my opinion. I do wish at times I had a brake saver with it. I would use it more than the Jake I think

 

They are sure nice coming into towns where Jake noise is frowned upon!

 

One of the biggest advantages I’ve learned with Brakesavers is pulling a couple of pounds application on them if when the truck starts wiping it’s feet in a bad spot. I’ve avoided a lot of shifts that probably would have ended badly doing that.

 

Tag on the housing is what matters. That C is in front of all of them. Same riser on all of them except the 349A. With so many models close to same it is easy to go wrong lol