My brother asked me to do the j-mod to his 98 Mustang GT. He's having a problem now the car shifts great, however he does need to rev it up slightly before it engages fully. We used the separator plate gaskets needed (P.N's xw7z-7d100-aa) Ford says they no longer make the f7az part number. I drilled out the holes to spec,took out the lower 1-2 accumulator spring but did not get the updated accumulator and filled the transmission with Mercon V.
While in first manually it is really sluggish but does not slip and when it hits second it pulls like it should. In first its really tight if he lets it rev up to 3k and idle down it decelerates rather quick. Any idea's on this?
Daily Driver - 2014 Ford Mustang GT 5.0 manual black on black. Stock for now.
Current Project - 1996 T-bird LX 4.6L: PI head swap, factory 3.27 TL, tuned by Don LaSota.
Retired Car - 1995 T-bird LX 4.6L: 4v swap plus Cobra goodies