1965mustangman

my 289 has a perf. rpm intake, 600cfm 4bbl., long tube headers, h-pipe, mufflers, elec. fan tci c-4 etc. etc...I have 2.79 gears or so in the rear with no posi. Up top my car pulls great but the launches are horrible. I am going to get a posi rear end and gears most likely 3.55s or 3.89s. My question is how would the car run with a 2500 to 3000 stall converter in it. I dont have a performance cam in it now but i will eventually add one in the future. What are the side effects or problems I will have with a higher stall torque converter with a stock cam. any suggestions.

my77stang

go for it, contact edgeracing.com and they'll get you hooked up

fast66

Forget the Stall coverter untill you get the cam. They should be matched to get the most out of them. You will find that with the 3.55 rear end, your launch will improve greatly anyway. I would also recomend you take a drive in a ar with a 3000 RPM stall converter. For a weekend blaster its fun, but for daily driving it gets tiresome.

Scott H.

.....

ninteen66mustang

not to hijack the thread, but can someone explain what a stall converter does? It sounds like it lets the engine on an auto car rev more before it gives power to the wheels... correct?

fast66

Yep thats pretty much it.
In a standard auto trans, when you have your foot on the brake, and push the throttle a little, the revs rise up to its stall speed. usually around 1600-1800 revs, a high stall simply lets it rev higher, ie 2500 or 3000prm.
The only benifit is that on launch, your engine is already in its optimum torque band, so you take off quicker. (or in a cloud of smoke)
When your driving around town, they tend to give the impression of a slipping trans which is why I say they become tiresome. (and you use heaps more gas!)
If you do a lot of track work, or spend most of your time looking for traffic light fun, you would be happy with a stall coverer that is matched to your engine characteristics.

my77stang

my 2800 drives very well actually, sometimes i wonder if its reallyk working right[8D]

1965mustangman

thanks for the info. i might think about a lower rpm stall like 2200 to 2500 or so. then upgrade in the future if needed. thanks

SalikDDD

same in my 98 lol.. i don't even notice it.