I am considering get a new tc with a stall around 500rpm above stock. I don't know if it would offer much performance for my 4wd truck though. Performance for the money I mean.

Who makes decent tc? I have read a lot about tci being hit and miss.

setup
79 4wd
3.50 gears
31 tires
390
ported heads, 901 cam, headers

 

With the 901 cam, dont bother. It should make it's power low enough that the stock torque converter will be just fine. I'm running the 941 cam with the stock torque converter and everything is working good. All you'll do with a slipperier torque converter is make more heat.

Your setup looks like it should work just fine; what caused you to think you needed a different torque converter?

 

i want more bottomend acceleration and burnout power! even though my rear tires are bald, shame they were good mud tires at one point. 10.5 worth of racing slicks now

 

For more bottom end acceleration and burnout power lower the gears more. With 31" tires you might consider going to 4.1 gears.

Good Luck

Tracy

 

true that!, but the rpm would be more than I want to turn going down the road. If I had an overdrive I would get a lower gear ratio. Thats where my supposed 428 would be helping me out. I'm still bummd out about that.

 

yep...it's a tradeoff. I've been looking at options to add overdrive to my truck. You can get adaptor kits to put either a 700r4 or a ford aod behind a FE for about $800. That's just the adaptor kit, you still have to get the trans and install it. You can also put a gear vendors overdrive behind a C6 but that's something like $2300. For me either option is too much right now.

Tracy

 

Well I'll tell ya... here's what I've got:

'70 F100, 2wd
3.50 gears
P255/70R15 Cooper Cobra tires
390
Ported heads, 941 cam, headers, fuel injection, about 9.7:1 compression
Stock torque converter and a C6 trans

A while back, I left a 127' black streak on the road. Nice cloud o' smoke. It's still there out in front of the house, burned into the road. It's got PLENTY of low end torque and burnout power. With your smaller cam, you should have more low end torque to break 'em loose than I do. Something aint right. I mean, up 'till about 25mph, I can pretty much break 'em loose at will.

I really dont think it's the torque converter. Hows your timing, carb tuning, accelerator pump, etc?

 

Just because he doens't need a higher stall TC to accomodate his cam/motor combination, doesn't mean it won't help him launch harder. Regardless if the motor is happy at 1200rpm or not, it's most likely making more power at 1800rpm.

As mentioned, the price is that your tranny will probably run hotter. I may already be struggling with just this issue. I moved from a stock style TC to a TCI Saturday night special. the new Stall Speed was only supposed to be about 2200rpm (not radical by any means), but I seem to be having heat issues anyway.

 

It *might* help him launch harder. It depends on how much torque the motor makes at the RPM that it stalls at now, and how much it makes at the stall speed of the new torque converter. If the difference is less than 10 ft-lbs, I doubt he'd ever notice it. With the 901 cam he's got, I doubt it would help much. That's all I'm saying. Although, if the higher stall torque converter has more torque multiplication, then it definately will help with the launch, if you can get traction.

I will admit though, that it may help. I know it would help my combination. While mine still has enough torque to break 'em loose, if I get traction with WOT acceleration, I can feel the motor "turn on" at about 2000rpm. Torque keeps building right up until it shifts at around 4700rpm (need to delay this, the motor has more in it). Comparing the torque at 1400rpm (where the torque converter stalls) to the torque at 4000rpm is rather disappointing.

I personally dont think it's worth the price you pay in extra heat, and mileage you loose from more torque converter slippage. Might be fun though.

Greg, I wonder if your heat issues weren't just related to repeated track launches? Does it have any problems on the street?

 

It's still leaking/venting. Just piddling around my neighborhood.

 

have 460 c6 stock convertor out of a lincoln continental 280h/535 comp cam .060
over edel rpm manifold 850 holley shift kit can I stay with this stock convertor
in a f-100 1964 stepside 3.89 rear spool 28"x12" tires
what do u think

 

Not sure tool man but if you have good duration I would get a saturdaynight special. Honestly I ran one in my mustang for ever before I did anything to my motor. I had the same converter greg has and you can go to that with no problems on a stock motor and it will improve you launches. For a truck usually you want that instant "no slip" action so you wouldnt go with a stall. The cure is a very high quality trans cooler. I ran a b&M AOD with the 2200 stall on a stock motor and beat the **** out of it and it was quick! I used a big flexalite cooler and trick shift synthetic oil to help keep it nice and cool and it worked flawless. Another trick is to get a larger oil pan and use more oil in the trans. I would never opt out on a converter because of heat....theres to many ways to cool a trans down for that.

 

you say for a truck I need no stall meaning stock?
going shift kit , trick shift tranny fluid, stock convertor for now??
seem ok
thanks for the info haven't built any thing in a while..