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09-11-2022, 08:48 AM | #1 |
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727 J convertor
Any Mopar racers still using Turbo Action J convertor In Super Stock?
Can you share results? |
09-11-2022, 09:32 AM | #2 |
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Re: 727 J convertor
My experience with the “J” was all very positive while foot braking but went to ATI when I switched to a trans brake. Some successful Super Stock racers may very well still use the J and can attest to it’s strengths but I would still call Paul Forte for his opinion on your specific application. He will give you the unfiltered and definitive answer. He remains focused on great customer service.
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Jim Carter 2340 Super Stock 2340 SST/2340 Stock |
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09-12-2022, 10:41 PM | #3 |
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Re: 727 J convertor
I ran the 069 J (9 inch) =convertor in the 70's and 80's.
Mopar sold it back when the Max Wedge and Hemi cars were very hard to hook up and the stall ratio was low to help the work well with the tire and chassis tech of that time period. The only thing I still use it in is my non tubbed small tire Street Legal Big block 10 Second Valiant that has serious traction issues and goes a turtle like 1.50 @ 60. I bought it from a buddy at swap meet for $100.00. It served a valid purpose in those days and solved a problem = Tech has changed a lot in 40 years.
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John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 09-12-2022 at 10:44 PM. |
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09-12-2022, 10:46 PM | #4 |
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Re: 727 J convertor
The J converter was originally made from the Ford Cortina (10 ") core.
Later, this size converter was made from the Toyota core, and then later, the GM 245 MM. unit. The size business has always been confusing, with some 8 " units (Opel) measuring over 9", and what some call the 9 inch, @ 9.5 or even 10". The 245 mm GM is the most versatile ,with several different fin angled pumps and stators. For a while there, the Opel stuff wasn't being reproduced so we did quite a bit of testing with the 245 mm. Our 400 Pontiac and 350 Buick combos never had anything but, and they ran pretty well. I feel that we just scratched the surface though, and never got into profiling the various stators. In any case, if you want to know about J's, call Paul. He's a no BS kind of guy.
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09-12-2022, 11:07 PM | #5 | |
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Re: 727 J convertor
Quote:
I footbrake, no 2 step,I use a Racepak to see what really happens. In my car the difference in ET between the J and my ATI is hard to measure, although the graph is a lot different! |
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09-13-2022, 07:05 AM | #6 |
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Re: 727 J convertor
I believe Frank Lupo still has J cores to build converters
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Duane Hoven 1342 SS/GT |
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09-13-2022, 07:30 AM | #7 |
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Re: 727 J convertor
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