Suggestions for my Dart

well guys, wanna thank ya for the tips/advice and compliments. I love this site.

As far as the Gear vender O/D goes and my 3500 stall, here is what the G/V company
says about O/D with low gears and high stall.


Can I run a high stall converter in overdrive with a 3.42 axle?

Yes, this is one of the most often confused questions (even when you ask people you would think would be knowledgeable). Here is the detail. Our example could be this 3.42 Chevy guy. In overdrive he is going to be a 2.67 final drive ratio. He is a Cutlass body with 27 inch tire and so at 75mph in overdrive the motor will be turning 2484 rpm and he has a 3500 stall speed on the back of a pretty nicely built 350ci motor making close to 400hp. 95% of the people you would ask (even tranny guys) would say no-way and yet we know this is an awesome package (drives wonderful, no high temps in the trans etc) why does it work? When his converter was made it was set up to stall at 3500 with 400hp. However if you put 600hp to it it would stall at something like 4500. Conversely if you only put 125hp to it (as when you are just crusing at 75mph not accelerating) then the stall is way down at 2,000 rpm. So his stall with a 3500 converter is not 3500 at cruise because he is not making 400hp. Car drives wonderful. If he romps on it while cruising then the trans is going to downshift to a lower gear and get him into the powerband. (note: read gear vendors passing gear in this section) So, this is why you never lie to you converter builder (because if you overstate your hp you will not get the stall you wanted).

The package of 3500 and 3.42 with 400hp is a sweet setup with a GEAR VENDORS . Without a GEAR VENDORS the trans will not have a great passing gear because 2nd is too low. But with a GEAR VENDORS it will it will jump right into 2nd-over which will rip nicely and put the converter right in the power. You can use this setup as a guidline and say move up or down in ratio related to stall from this good setup with a GEAR VENDORS. Below you will see we have listed an actual formula for Aerodynamic load.

Aerodynamic drag force may be defined as follows:
Fd = (1/2) Cd r A V^2 (1)
where

Fd = aerodynamic drag force
Cd = coefficient of drag
r = density of air
A = frontal area of vehicle, into the direction of motion
V = velocity of vehicle, into the direction of motion

Thanks again, OldmanRick, Rumblefish, stansblue, abodybomber