Thanks Marty, Im in Australia so Ive got to set a day when I can wake up very early in the morning to call.
Don't all the comp racers use 7in converters. Most of the fast guys use 7inch conv with success.

Yes it was a 7inch

Hey marty can i please send me racepak file to you?
Thanks for the reply too

Got a altered weighing 1670lbs. Has a 358ci 15deg sbc making just on 800hp. Makes power to 9100. 495ft lbs at 8350rpm 4.58 rear gear with a 32in tall tyre. powerglide 1.7 first gear. Ive had to conv in this car. I had a converter in the car that was dropping to 7500rpm on the shift and it seemed way...