If your bellhousing alignment was good, and nothing in the clutch or throwout bearing are rubbing inside the bellhousing, I'm pretty sure you're dealing with gear rattle, especially since you said you really only hear it stopped in neutral with the clutch out.
What fluid are you running?
Thinner fluids like ATF make the rattle a little worse since it's such low viscosity.
The rattle gets quieter with syncromesh since it's a little thicker and dampens the gear contact better (Tremec brands their own blend of syncromesh fluid now, HP-MTF)
It's even quieter still with Redline Superlight shockproof.
Years ago Dodge had a TSB for gear rattle in the T56 in the Vipers... the "fix" was thicker fluid.
Worst neutral clutch out gear rattle I've ever heard was in a brand new C6 Z06... sounded like a paint can half full of rice being aggressively shaken behind you. LOL!
__________________
1969 Chevelle
Old setup: Procharged/intercooled/EFI 353 SBC, TKO, ATS/SPC/Global West suspension, C6 brakes & hydroboost.
In progress: LS2, 3.0 Whipple, T56 Magnum, torque arm & watts link, Wilwood Aero6/4 brakes, Mk60 ABS, Vaporworx, floater 9" rear, etc.
Last edited by Blown353; 12-06-2020 at 07:06 PM.
|