SuperRam Clacking
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Joined: Sep 2001
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From: Torrance, CA
Car: 88 Corvette
Engine: 400, AFR heads, ZZ9, SuperRam, 730
Transmission: Slushbox
SuperRam Clacking
Recently finished my 400 build up and it runs great except for a loud clacking that makes the car sound like a diesel pickup truck.
The sound is loudest in the center of the SuperRam plenum lid. It gets quieter when the oil temp is over 200 degrees.
It is not coming from the rocker arm covers.
I pulled the plenum and verified that not the EGR valve nor anything else is hitting or touching the bottom.
What could carry a noise into the plenum?
The sound is loudest in the center of the SuperRam plenum lid. It gets quieter when the oil temp is over 200 degrees.
It is not coming from the rocker arm covers.
I pulled the plenum and verified that not the EGR valve nor anything else is hitting or touching the bottom.
What could carry a noise into the plenum?
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