555 Boost Valve

[SNOWBIRD]

Can these valves be purchased from transmission part stores.? or are they custom made by one of our vendors?

 

[bison]

Custom made

 

[SNOWBIRD]

is the 570 recommended or will I have problems due to thin wall

 

[bison]

.555 is fine. PTS doesnt even sell the .570 anymore to my knowledge

 

[turbo nasty]

Yeah I just purchased the Psi reg system from PTS and mic'd the boost valve and its 555. Tho I found that the trans is on the verge of starting off in second with his entire setup so I put the stock rev boost in with his kit and all is well. Really firms up the 2-3

 

[jakeshoe]

Hmm,
Interesting...
I posted on here a couple or three years ago about issues I had with the .570 boost valve having poor machining and too thin.

I guess maybe there were more issues with them than some would like to admit.

I haven't had issue with using the standard cheap .500 boost valves other than they need to be smoothed a little sometimes to be sure they work good hot.

 

[chris718]

We are making the .555 valves and they are produced on a screw machine which is the only choice for efficiently manufacturing small parts.Ihad a few hair pullers with the .571 valve assemblies cars showed up with at the shop.Jake,the diode is junk,FB is installing them in 350 .Not with good results from what it I have heard,the races are annealed ,turned re heat treated and ground.

 

[jakeshoe]

Good to see you around Chris.

I was wondering how tough the diode was because they are the preferred deal in the AOD world. I did that AOD awhile back and it's in the car and running now behind the 347. Works great!
I put the diode drum in it, I was just curious, with the ratcheting action, you would think it would see greater wear.

I'll post a new post up here for all builders input about the pans.

Jake

 

[chris718]

towing without the driveshaft removed and the wheels on the ground will kill the diode in 10 miles in most cases.we use a super sprag from an e40d at that location.