[Pops @ Tri-5.com]

Not sure I understand all I know about stall converters....I believe the reason for a converter with a higher stall RPM is to get some engine RPM's up before the car launches.

This said: Is it necessary or desireable to have a higher stall converter with a 265, 700-R4, and 3.55 rear gears on a '55....Seems to me with the 700-R4's low first gear it would just be a waste of gas to someone like me, who drive's like an old man.

 

[r66ss]

Not sure I understand all I know about stall converters....I believe the reason for a converter with a higher stall RPM is to get some engine RPM's up before the car launches.

This said: Is it necessary or desireable to have a higher stall converter with a 265, 700-R4, and 3.55 rear gears on a '55....Seems to me with the 700-R4's low first gear it would just be a waste of gas to someone like me, who drive's like an old man.

David u are 100% right, with your combo, especially since its stock, go with the stock lock-up-converter for the over drive and set up u hav
happy cruizen :driver:

 

[johnnybil57]

If you are not drag racing or expecting to win at every stop light, you are right about stall converters. Those 3:55 geras with a 700 are perfect. My 383 with a 700 with 4:11 gears has a 2,500 stall, more than enough to go fast if you want to. Gearstar Trans and TCI have great websites for that info. From another old man.........

 

[Pops @ Tri-5.com]

What RPM stall converter would be right for my situation then?

 

[Rick_L]

"someone like me, who drive's like an old man"

Well then you need a factory converter for a V8 pickup or heavy car. Stall speed is around 1400 rpm. The only converters for a 700-R4 that would vary from that would either be for a Corvette (performance), or a V6 (which needs a little help from the converter).

Somewhere on the net is a list of ID codes and stall speeds for factory 700-R4 converters.

 

[Pops @ Tri-5.com]

The transmission from an 86 Corvette with a 350 TPI motor.....I believe the converter is around a 2000 RPM stall....My builder is replacing the converter with a new one....Says a Corvette one is better built.....However, I can't remember how or what is different about it, except the stall speed is higher.

 

[TXRaceFan]

I really think your converter choice is a function of your camshaft and the engine powerband. The idea is to get the motor into the powerband immediately at full throttle. If you have a stock converter with a cam that builds power from 4000-7500 it will be a pig and won't idle in gear at all.

If you have a stock motor go with a stock converter although a slightly higher stall will act pretty normal but will be a little more "peppy" when you get on it. Maybe 1800 stall for a warmed over small block?

If your cam powerband starts at 2500 rpm, you might want a converter that stalls with your combo/vehicle weight at 2800 or so, etc.

The other consideration is your cruising rpm. Conventional wisdom is you don't want a stall speed that is higher than your expected cruising rpm. They cite slipping will occur and heat is created that will wear out your tranny faster than it should.

In my opinion is the true stall speed is less under no load so I don't believe you go with "advertised stall" vs cruise rpm. My old El Camino with a 383 and a 3000-6500 cam and 3.73 gears worked well with a 3200 stall unit and didn't feel odd at all at hwy speeds. I seem to recall that 65 mph was around 2800 rpm.

 

[Rick_L]

"Says a Corvette one is better built"

Better built for what? It IS better built for performance, if that's what you want. But that's not what you say you want.

The construction technique and the strength of the parts is the same for all factory torque converters. The only question is which one do you want for the application.

 

[Pops @ Tri-5.com]

Still looking for an RPM recommendation.....1000, 1500, or 2000....The engine is a 265 that has been rebuilt at some point, because it has 60's Power Pack heads.....Runs pretty strong for what it is IMHO.

 

[TheHotrodHandyman]

Still looking for an RPM recommendation.....1000, 1500, or 2000....The engine is a 265 that has been rebuilt at some point, because it has 60's Power Pack heads.....Runs pretty strong for what it is IMHO.

Go with the stock GM converter stall (rebuilt of course) that the trans came with unless you plan on putting a "healthy heartbeat" in it soon or you will not be happy.

-Bruce

 

[cheifyoda]

stay with stock convertor youll like it imo

 

[Pops @ Tri-5.com]

stay with stock convertor youll like it imo

Stock for what? A TH700R4 converter coupled to a 4.3 liter in an S-10 is different than a 5.7 liter in a C-10 Truck and that is different than a Corvette of the same year :confused0024:

 

[drpepper]

if you have a stock cam then get one between 1400 and 1800 and you can't go wrong. with the clutch type lock up converters you'll be fine. we use a 3600 stall with 4:10 gears in the trailblazer and it slips on initial launch but at highway speeds you never know it's a higher stall.

 

[TXRaceFan]

I agree with DrPepper based on what it sounds like your motor is.

Your choice totally depends on the cam in it!!

Take a look at the B&M website for add'l info.. With a small but bigger than stock cam I'd go with the 2000 stall option.

http://www.bmracing.com/PRODUCTS/Tork-Master