Any Calculators out there to help determine Stall for your Converter?

[Tim_in_NC]

I need a link to a Calc. that will help determine best stall speed for a torque converter ...

Anyone know of one?



Thanks ...

[the camtender]

Ever thought of calling a coulpe of torque conveter builders,they probably have the more accurate answers to your question ?

[dhardison]

When I was trying to 'size' a converter I searched the web and never found anything useful. Best way I found was to call 2-3 major vendors, give them your info, take the recommended stall average, then buy from your vendor of choice.

[Tim_in_NC]

Thanks Guys ...

Reason that I'm asking is that I've called three seperate converter manufactures and have gotten three different stall size answers ... This is after giving each of them identical info on use of vehicle, cam specs, blower info, Gearing, tire size, etc...

One vendor said 2800, one said 3200 and the other 4000 ... I'm leaning toward the 3200 myself based on what I've seen others with similar combos use ...

My combo is a 383 with a solid roller cam (Lobelift Intake 0.376 / Exhaust 0.388, Duration 244/253 @ 0.50, LSA 114), D1SC procharger with 15 lbs. of boost, 9" rear with 4.11 gearing, & a 28" tall rear tire ...

Go figure

[astroracer]

Stall is totally dependant on your engines lowend torque output. The more lowend torque your combination produces the "higher" a convertor will stall. As an example:
A 2800 stall converter may stall at 2800 behind a 350 horse smallblock. Take that same convertor and put it behind a 350 horse bigblock and it may stall at 3200 or 3500 because the bigblock has the torque to overpower it on the lowend.
You really need to get comfortable with your decision. You may be better off with a lower stall just because your motor may be able to overpower the convertor to a point where your 3200 stall is actually a 3800 or 4000 behind your motor.
If this is a street driven car I would trend to the lower stall. Do you know what your combo's torque output is? That would be key to getting good advice from a convertor shop.
Mark