the rear band adjustment for the 904 depends on the rear band...double wrap which is in v8 904 calls for the 4 turns...the /6 rear band is the one that calls for 2 turns..it is a different band.
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)