I’m not sure how much I’ve spent on the 68 Mustang coupe and probably shouldn’t look. I purchased this car in the fall of 2016 and went nuts! Took the 6 out and replaced it with a 347 Stroker, subframe connectors, 9 in rear end, a whole new drivetrain. It was sweet, but now I have a Tremec 6 speed transmission in it. I now have a vibration and I can’t find where it’s coming from. I have balanced the drive shaft 3 times check pinion angles changed tires. It seems to be in the transmission. We pulled it apart and it seems fine. Any ideas out there?
What the $
- Thread starter Mustang4don
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tos
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20+ Year Stangneter 
Just to be clear, with a different trans and the new engine it was smooth?
Vibe came instantly with the trans swap?
You replaced, trans, flywheel, clutch, and driveshaft and that is all?
Vibe came instantly with the trans swap?
You replaced, trans, flywheel, clutch, and driveshaft and that is all?
I saw no mention of U-joint replacement.
Information about when and how you hear/feel these vibrations could help. ON the throttle/off, with engine speed, with vehicle speed... etc.
Information about when and how you hear/feel these vibrations could help. ON the throttle/off, with engine speed, with vehicle speed... etc.