I just installed a brand new hughes pro comp 4500 stall converter behind my afr headed 406 and decided to go out and test it tonight after work went out to a dead end road and tried to foot brake the car to my suprise the car actually foot braked to 4200 rpms and when i launched it it would flash to around 55-5600 i know stall speeds are suposed to be approximate but i called hughes before i purchased it the guy i talked to said it should flash around 4500 to 4700 with my setup this is rediclous it only leaves me 2000 rpms before i redline i just thought i would let everyone that i was rather dissapointed with my converter before this i had never heard anything but good things about hughes products. FWIW It does however launch very hard cant wait to take it out and put some spray it

thanks for the info i would personally go with a b&M or TCI just because of the name. i have a stock 2025 stall converter and don't have the car tuned right to get the most out of a launch to determine how well it does. thanks again for the advice

Well they can only assume so much on the engine.. since the engine determines a lot of actual stall speed... anyway its not the converters fault and probably would last forever.. i think its more of maybe lack of research like finding other people with similar setups and asking questions..

You bought a 4500 stall converter and it damn near stalls around there and it is the converter's fault?

Perhaps as mentioned earlier you should have researched more and purchased a different stall speed.

FWIW I have a 2500 stall Hughes in my '67 and am pleased.

Hate to be the barer of bad news, but TCI and B&M build junk. Their old school stuff for T400's/T350's etc is ok, but neither company builds anything worth it's weight for OD transmissions. There's a reason they're 700r converters are less than 1/2 the price of vigilante/precision/edge/etc.

- as for the 4200 foot brake, 55-5600 flash, are sure it's not already moving the car at this point? - Sounds to me more like it stalls around 4500, and reaches full "lock up" around 5500, which wouldn't be to far off from what I'd expect it to do.
For all out performance, I know of MANY race cars that happily enjoy a stall speed at just below their peak power.

- call Hughes and explain what it's doing. They may take it back and change the stall speed for free or minimal cost. Many good converter companies will change stall speed one time for free on a new converter. - this doesn't apply to their cheapies though.....

I called hughes today they told me that it should not foot brake that high with my setup and that it shouldnt flash that high either he reassured me that it should only be flashing around 4700 or so within a few hundred rpms thay offered to exchange it for another one free of charge wich ill proably pull it out this weekend and send it back. I did lots of research on choosing a converter made lots of phone calls to several engine builders and transmission companies and all gave me the same answer wich was to get around a 4500 stall.

Are you sure you're not getting wheel spin?

Are you sure its not the tranny slipping....?

its a rebuilt transmission with less that 2000 miles on it and i never had any problems with it behind my other motor as for the wheel spin the car just burns the tires but i notick the tach hits 5500 before i feel the car start to move

And you want to blame the converter manufacturer?

ive heard that out of the cheaper stuff hu;ghes is the way to go. bm and tci are crapola.

...I hope you're not going by the factoy tach.....r

no im running an autometer pro comp tach

good, but as stated, you can't really tell where the converter hits if the tires are spinning.

sounds like the converter is fine, you need to dead hook or being rolling and bounce it in 3rd without a downshift to see where it stalls.

Hughes converters are some of the best and their customer service is great.

I haven't had any luck with B&M converters, neither have my friends. I had a 3000 stall in my camaro for 2 months and smoked it, I ran a 2000 in my mud truck and smoked that too. My buddy went through one in his chevelle and switched to tci which has held up to his 500 hp small block pretty well. My next one will be a tci or hughes. I've heard mostly good things about both.

B&M shift kits and tranny parts are great. I just wasn't very impressed with their converters. I rebuilt my tranny with one of their overhaul kits and it works great and shifts hard.

B&M and TCI build mass produced low-end mail order parts. TCI has just released a HD input and reaction shell for the 700, a trans that has been around since the early 80's. The reaction shell is one of the most failure prone factory parts available. Other companies that know what they're doing with parts for heavy duty overdrive transmissions have had items like this available for many years. - B&M's "shift-kit" is nothing more than solid shims for the accumulators which creates excessively hard shifts at all throttle levels and is a quick way to help kill a trans.

- There's a reason neither company can build a 700 rated for over 500hp. They build ok parts for mildly modded stock vehicles. Past that you have to spend a little money and buy quality parts.

- now back to topic -
You'll never hook street tires. It's controlled spin. That said, it's hard to say one way or the other where the converter is actually stalling too if the tires are spinning.

B&M converters are TERRIBLE! I bought a new summit street strip TH350 for my car and a B&M holeshot 2400 converter and it was a pile. I drove the car for half a day and the first time i tried to flash the converter it broke one the of bearings inside pumping my brand new transmission full of shavings. Needless to say after i towed my car home i was very impressed. When i called B&M there service was terrible, they kept telling me how my motor shouldnt have broke it and it shouldnt have done that and i am sure i put it in right and did not want to do anything to make it right. So i told them never mind, took the tranny out, took the converter out, returned the converter defective, replaced the front pump in the tranny becuase that was junk from the converter and bought a hughes 2500HD and i LOVE IT. It has been great, it flashes at 2700 and it is still holding up a year of abuse later.

I had to get a new converter for my rebuild. I didnt want a TCI or B&M because I know from experience and others experiences about their stuff. It isnt good experiences either. Im with Shagwell and Da Captain on that issue. Hughes I heard of but no experiences thus far. I had one more option for something I could afford now and that was a brand that Superior Transmission Parts here in Tally use. They are called Precision but its not the same one that makes the Vigilante. Its Precision of New Hampton I believe. I picked up a 2100 stall for under $200. It looks very well built but I will have to wait and see in a few weeks after I get it all going again. With my setup it should be 2500 or a little more and flash higher too. Here is their site if anyone wants to check them out. A few people I talked to swears by them. Guess I will see. http://www.gopnh.com/

Yank > *