sounds like u over revved n bent a valve. as far as the tranny goes.....could b the synchro not wanting to go into 4th at whatever ur redline is. i think the only real way to tell is to pull the tranny apart n c. it could also b a bent shift fork. u could also have fried ur rings, but i doubt that happened (sometims that makes em sound like a subie).
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RIP PABLO AKA FATHEAD.....YOU WILL BE MISSED!