Stall options...

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kc0r8y

kc0r8y

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Hi,
I recently purchased a 69 Dart. The prior owner 1/8 mile bracket raced it.
It's a stroked 408, built 727 trans with 430s in a dana rear. The stall is an 8 inch 4600. That seems very loose for the street.
I was wondering what stall are you guys running on the street and if I change the stall what other, if any, things do I need to change?

I'm looking to make it more street friendly.

Opinions appreciated.
 
its a race car. sure its going to be loose for the street...

you need as much information about the combo as possible.. then call some of the good converter companies and see what they recommend..
 
kc0r8y said:
I'm told the cam is a 501 lift, 244 duration at 50.
Click to expand...

Thats a LOT converter for that size cam..My most recent build was a 360 with a .533/.552 cam using a 3800 stall performed well on the street..but mostly track car..
 
kc0r8y said:
Hi,
I recently purchased a 69 Dart. The prior owner 1/8 mile bracket raced it.
It's a stroked 408, built 727 trans with 430s in a dana rear. The stall is an 8 inch 4600. That seems very loose for the street.
I was wondering what stall are you guys running on the street and if I change the stall what other, if any, things do I need to change?

I'm looking to make it more street friendly.

Opinions appreciated.
Click to expand...
Your best bet is to contact one of the known high stall converter builders. Give them all the information on the engine specs., the rear axle ratio, rear tire size and what your main use of the car will be. With that information, they'll be able to tell you what converter is best for your application. It could be that the converter you've got now is the best one for the car. It looks to me like the car was purpose built for racing and will need to be de-tuned for street use.
Any converter in the 8" diameter was never intended for street use.
 
transman said:
Your best bet is to contact one of the known high stall converter builders. Give them all the information on the engine specs., the rear axle ratio, rear tire size and what your main use of the car will be. With that information, they'll be able to tell you what converter is best for your application. It could be that the converter you've got now is the best one for the car. It looks to me like the car was purpose built for racing and will need to be de-tuned for street use.
Any converter in the 8" diameter was never intended for street use.
Click to expand...


Yes this car was built to be a track car. I'm hoping I can swap out the stall and the 430 gears to something more suited for the street.
 
Gears sound like fun! Converter can be better in 9.5 size and perhaps a tight 3400-3600 stall range. Dynamic, PTC or FTI csn be good companies to contact.:steering:
 
I've driven it very little. I haven't taken it on the highway or anything like that. I'm just trying to evaluate what I have and thinking about things I have to change.
First and foremost it needs an exhaust. Open headers right now.
 
kc0r8y said:
I'm told the cam is a 501 lift, 244 duration at 50.
Click to expand...
Sounds like a Comp Cams 292 Magnum... That kind of grind,loves a 3200-3500 stall .. I would look at a 3200-3500 tight 9"- 9.5" inch converter,from Edge,PTC,Turbo Action, Dynamic,& Continental.... Converter technology,is so good now.... A good 3500 stall is a good thing,nowadays
 
kc0r8y said:
I'm told the cam is a 501 lift, 244 duration at 50.
Click to expand...

That cam is going to want a convertor around 3500-4000 for street use. no less than 3500. I currently run a 3500 convertor with pretty much the same cam. 242@.050 and .528 lift.

Make sure you go through a reputable convertor company and tell the you plan on street use.
 
That cam, in a 408", is basically a stocker. Peak torque, which will be basically flat just above idle, will be around 3K. I would go 3.54s in the Dana and get a tight convertor - something in the 2500 range. No need for more if this is a street car. Or change the camshaft to something respectible for a 4" engine and then match the convertor to it.
 
kc0r8y said:
Hi,
I recently purchased a 69 Dart. The prior owner 1/8 mile bracket raced it.
It's a stroked 408, built 727 trans with 430s in a dana rear. The stall is an 8 inch 4600. That seems very loose for the street.
I was wondering what stall are you guys running on the street and if I change the stall what other, if any, things do I need to change?

I'm looking to make it more street friendly.

Opinions appreciated.
Click to expand...

Pull the 727 and swap in a well-built 200R4 with a 3600 stall lock-up converter. You will never look back. It's like having a 5 speed automatic and the 4.30's will be just fine at 70mph.
 
jbc426 said:
Pull the 727 and swap in a well-built 200R4 with a 3600 stall lock-up converter. You will never look back. It's like having a 5 speed automatic and the 4.30's will be just fine at 70mph.
Click to expand...

That sounds like something I'd be interested in.
 
moper said:
That cam, in a 408", is basically a stocker. Peak torque, which will be basically flat just above idle, will be around 3K. I would go 3.54s in the Dana and get a tight convertor - something in the 2500 range. No need for more if this is a street car. Or change the camshaft to something respectible for a 4" engine and then match the convertor to it.
Click to expand...

I was thinking that the smaller cubic inch would actually raise the peak torque. His cam in my 440 results in peak torque at 3500-4000rpm.
 
roccodart440 said:
I was thinking that the smaller cubic inch would actually raise the peak torque. His cam in my 440 results in peak torque at 3500-4000rpm.
Click to expand...
I agree. I would expect a 408 with that cam would have a torque peak in the 3800-4500 range. I have the 292 Magnum in my 440. With a 2500 flash Neal Chance 11 inch it was soft on the low end. Not that noticeable on the street, where it would just light up my hard street tires. Was a different story with the slicks bolted up. 13.24 best et with that converter. Swapped to a 10 inch GER (junk) that flashed to over 3500 .Went back to the track and went 12.93 on the one pass I made that day(forgot my helmet). The next time I went to the track I went 12.80s. Not a fair comparison though as I had also swapped the front steel wheels to Welds.
 
Combination of port size and stroke helps determine the rpm of peak power, and flattens the curve. The 408 has 6% more stroke than the 440. A higher stall will certainly make the car get moving quicker, but you're just slipping past usable power and certainly driveability which in a street car is more of a consideration than the small percentage of the time the car will be accelerating through the gears at full throttle. Every 4" engine that I've put into a street car and paried with a tighter, lower stall was much more of a balanced performer for the owners. Just my opinion but convertors are one of those things that race cars have to err on the side of acceleration and street cars have to err on the side of driveability.
 
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