Larry and I are using energy suspension poly mounts for the stock clamshells. No issues with vibration and zero issues wiping them out with the torque of the 8.1’s or use with a manual transmission.Harness shipped yesterday. Now to continue the parts shopping.
View attachment 508187
Currently in the market for some 75-80 cooling parts for a 454/400 application. Upper bracket, radiator, and shroud.
@ZooMad75, what are you and Larry running for engine mounts? I have Kert’s DIY poly on my Jimmy, but didn’t know if there was a noticeable difference running a stock style instead of poly. I’ve heard you get more engine vibrations from the poly mount, but I don’t have anything to compare that to on my Jimmy. I don’t mind feeling the vibrations of the engine as I feel like you have a better idea of how it’s running.
I wouldn’t do an 8.1 without them. Larry went through a rash of stock rubber mounts trying to find a high quality unit and every one he tried tore in half or collapsed under the mass of the 8.1 letting it rest on the ORD tubular engine crossmember. He went poly and never had another failure.