Please consider whitelisting my site in your ad blocker. If you must keep it running here, please support this endeavor and select a support plan - which starts at only $0.16 cents per day. I'm not asking for much. I just need a little help. Thank you. Click here to select a support plan.
Possibly worn motor mounts, but also 1970-72 455 motor mounts are different than 350-400 motor mounts in an A-body, for some reason they sit higher than the smaller displacement engines. We used to use 455 mounts to help clear the steering linkage, but they sometimes caused hood clearance issues with an aftermarket intake manifold.