Thread: Help With Stall Converter

Tweet

Could Anybody Tell Me More About This Stall Converter Made By J.w. Performance Converters, I Know Its A 4500 Stall 10''. I Bought It New For $650.00, The Thing Is I Want To Know If Its A Loose Stall Or Is It A Tight Stall To Work With My Cam The Part # To This Stall Is 30444-j. My Cam Is A Howard Solid Lift Roller .582/.582 Lift,lobe Center Is 106 @242/242 Duration At .050. Will This Will This Stall Work For Me

Full Body Nova 72

cam 567/567 286/286 242/242 @050? if so 3500to 3800 stall call the place you got the stall at they tune it in

They have closed down the place i got the stall from

Originally Posted by demetrice askew

They have closed down the place i got the stall from

well i would call Coan they can i would think re work it and build the stall around the car that what i always have done it

Let me see if I can understand what you are really asking.

You know the converter is a 4500 stall.

The loose/tight that you are asking is referring to slippage??

You can have a tight 4500 stall or you can have a loose 4500 stall. I have a fairly tight 4500 stall in my Luv. It is calculated to have about 8% slippage.

That calculation is obtained by using a formula.

(Conv Slip% = [((RPM * Tire Height) / (Rearend Ratio * Trans Ratio * MPH * 336)) -1] * 100

A tight converter will E.T. and MPH better than a loose converter. The only way to tell if it's loose or tight is to run it and calculate the slippage.

If the slippage works out to 10% or less, it should be OK. I think you'll be OK with that stall with your cam. If you ever decide to go bigger on the cam, the stall should cover you.

Thanks.and I Know When I Had It In The Car The Frist Time I Could Not Feel It Go Thru The Gears When I Leave It In Drive.and It Seems To Me That When I Tried To Pull Off In Drive That It Go Right On To HIGH GEAR. BUT DID GOOD WHEN I SHIFT BY HAND

That's normal for a low gear and high stall. There are ways to fix that but it's not worth it for a drag only car. I've adjusted the governor on my transmission so that if I leave it in drive it will shift automatically at 6200 rpm at WOT. It also holds the part throttle gears much better. My Luv has a manual valve body so it's in whatever gear you put it in. No auto shift feature.

This is great in the response department.....but the original question was Stall speed. Dead stall is what has to be presumed here. Roll out and "Staying on the converter" is what is being answered. Let Askew give some legitimate questions as to what he's wanting to know. I think the whole area of lockup and stall, roll out, on the converter, maintaining stator to vane and pull through can be addressed. I feel he just wanted to know how a J.W. converter was for actuall stall. If I'm wrong, please let him come back on and clarify. J.W.'s are a bit tight from the old days. Designed for the over the counter customer to loosen them up through the season of pounding on them.