circle track: what type/brand etc torque converter?

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Rapid Robert

Rapid Robert

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63 dart 360/904 1/4 mile dirt track stock car. iirc 3;55's 7&1/4 (welded spiders,surprising it held up! & is way lighter than an 8&3/4). It still has the 55yr old OE torque converter in there & I think something newer/modern would be a good upgrade. what type/brand would you suggest I go with? thank you for your time.
 
It depends on your cam. The engine makes *** power at *** rpm and you need to make sure you're not slipping because of a loose converter. If a stock one has been working and the engine hasn't changed I would run it or get a new to you rebuilt.
 
it is a mid/high RPM cam (cant find the specs right offhand) & yes the TC ain't having any issues that I can detect but I was thinking that I might be leaving something on the table
 
Rapid Robert said:
it is a mid/high RPM cam (cant find the specs right offhand) & yes the TC ain't having any issues that I can detect but I was thinking that I might be leaving something on the table
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Unless it's slipping probably not. A stock converter is pretty solid at 5000+ rpm.
 
What rpm does the car come out of the corner at? And what rpm does it run at the end of the straight?
 
Back in my “roundy round” days we used Torque converters out of Vega’s for the 355 Chevelle with a Powerglide. We ran a 1/2 mile asphalt track with a 3.08 rear and we ran the powerglide in low with the tranny kick down lever pulled back for increased fluid pressure.
 
Are you allowed to run a direct drive with a ball valve to allow the trans to engage? No torque convertor...
 
Actually I have a custom direct drive 904 verter. I was saving it for another 904 where I would plumb the case for a shutoff valve. In the meantime I was thinking there might be a better verter for my current setup. thanks guys. RR
 
then you want it to stall just below your rpms coming to green flag,...a lock up might be a good idea,..light weight! every body round here runs a 3 speed saginaw with a 7 1/4 3 disc clutch set up in super street dirt class's or a 4 speed muncie with 1-2 removed....DWB
 
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