gt91fun

I have a 1991 black GT with the borgs and warner t-5. We rebuilt the car engine last year in school and has been running fine. My only problem is that when I shift into fourth gear over 3,500 rpm it grinds. Sometimes when I double clutch it wont. I read in 5.0 mustang and super fords that they hat a cobra kit on a fow chassey and due to a miss alligned clutch they had the same problem. I was wondering if this could be my problem. I was also wondering what my HP was. I have a K&N, E-303 cam, underdrive pulleys, 10:1 compresion, no smog, h-pipe, flows, and 4:11 gears. thanks for anything.

Black Snake

Sounds like your syncros are going out, same happened to me and right after my tranny broke.

mustangman02232

syncros

eaturls1

IT COULD ALSO BE THE SHIFT FORK INSIDE TRANS THEY ARE VERY THIN ALUMINUM. I ALL WAYS BREAK THOSE 4 TO BE EXACT

gspfunk

x3 on the synchros....as far as HP, maybe 240-ish to the wheels. Only real way to find out is get it dyno'd.