Dynamic Converters

[jusglazin]

Hi, guys. Need some advice. A friend of mine has a 68 Fury, 360 with 10/1 compression, comp 268 roller cam with 530 lift, 218-233 duration, Edelbrock performer rpm heads and intake. It has a 727 trans, 3.23 gear. He will be using the car for cruising mostly but wouldn't mind a few good burn outs now and then. He called Dynamic converters for a recommendation and was told they would make one with 3800 stall for his combination and desired driving habits. The guy said it would be fine cruising and wouldn't slip or heat up the trans cruising at 65-70. To me that seems a bit high on stall for his intentions. I have read that their converters are like no others but what do y'all think?

 

[roadrunnerman]

I would think that would be a little high also. My 69 383 is built similar to yours friends and I got a 2200 stall for mine. I talked to the guy at precision torque converters and that is what he recommended for my car. I would think anywhere between 22-2500 would be good for what your friend has.

 

[wedge5]

What looks off to me are the 3.23 gears. I would think some 3.91's would be good for that 3800 stall. I had a hot street 440 with a 10" Dynamic 3800 stall. Ran 4.10s and it ran great on the street. You could really feel it come alive when the gas was nailed. 2500 is to low for that cam, wouldn't it fall on its face until it gets up in the power range?

 

[Meep-Meep]

I had one they recommended in my mild 440 Belvedere and I pulled it out after 20 miles. It didn't help that I had a seal leak, but while it was in there I could tell it was way too loose. It's possible that it would help my 1/4 mile times but I don't spend all my time at the track. I ended up getting a 11" TCI and it works great in a street car. Blip the throttle and you are sideways. The 9" just felt like the tranny was slipping. My old converter is now residing in moparmarkk's 65 Plymouth race car and I believe he's very happy with it.

 

[MARKANNRAIL]

I would highly recommend what dynamic is telling you. they have built two converters for my 69' GTX and the current 727 transmission in the car. It's not the stall speed that will change the drivability of the car as much as the converter size. I currently have an 8" in my car and had a 10" prior to that. Same stall speeds both 4,000 and both totally different driving behaviors. the 10" does not "slip" any where near the 8".This shows up greatly at the strip where I can launch the car at a higher rpm as to the 10" I can only load the converter to about 1500 rpm and it is pushing the car thru the staging beams. The guys at Dynamic know what they are doing and if you give them the specs on what you have and what you want to do with it they get it right. I would trust them any day.

 

[kdtjb]

Frank knows his converters. A&A transmissions highly recomends them.

 

[383man]

I run a 9.5 Luppo Dynamic and it drives great and works great at the track for me. It will flash about 4200 at the track and I cruise all the time at 60 mph pulling 3200 rpm's. No slippage at all as it feels like a normal converter. They call it their street/strip converter and with the technology today they can make converters work very good for the street and strip. Ron

 

[Grabinov911]

I run a 9.5 Luppo Dynamic and it drives great and works great at the track for me. It will flash about 4200...

Hey Guys what does "flash" mean? These are non-lockup torque converters so I assume it means "get as close to locked as it gets"????

 

[65 Plymouth Satellite 426]

Frank knows his converters. A&A transmissions highly recomends them.

Frank Lupo Is The Tranny Man! Good Stuff!

 

[Budnicks]

Hey Guys what does "flash" mean? These are non-lockup torque converters so I assume it means "get as close to locked as it gets"????

Converter Flash, is what the converter speed/rpms runs up-to, when you nail the throttle from a near idle or dead stop, referred to "what the Torque converter flashes", usually a little different than stall speeds, the stepper or the lower {higher numerically} the rear end gears are, usually the less the "flash &/or stall speed" you will have effectively, mainly because of torque multiplication, of the steeper/lower rear gears, makes it easier to move the car... you will also generally have more "flash" in a heavy car or more powerful engine, than a lighter car or less powerful engine also, with the exact same converter... if any of that make any sense

 

[jusglazin]

Thanks for all the responses guys. The convertor is on its way.