727 J convertor
 

Any Mopar racers still using Turbo Action J convertor In Super Stock?
Can you share results?

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.

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.

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The J converter was originally made from the Ford Cortina (10 ") core.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.

Re: 727 J convertor
 

I have a TA-J converter that I have used in my 440-6 B/SA,
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!

Re: 727 J convertor
 

I believe Frank Lupo still has J cores to build converters

Re: 727 J convertor
 

Frank Lupo of Dynamic Convertors knows as much or more about J convertors as anyone.