What Was The Cause Of Youre Knock

[DONNIE BROOKS]

i had a cracked harmonic balancer,replaced it knock went away

 

[GNRick]

I had a huge vacuum leak-cap on inlet bell fell off, where the factory had a pipe connected to the valve cover.

 

[scojack_2001]

Alchy feed line came off at the nozzle. Car pulled 14°and I stayed in it. Ran a 11.92 and I drove it home none the wiser. Noticed it when I went to adjust the RJC valve.

Cant believe it stayed together!!!!

All is good now. Running 23psi with no knock.

 

[DONNIE BROOKS]

wow

you got lucky ,glad everything was ok ,these old buicks are tuff