I recently replaced my motor mounts with some auto zone mounts and seems like my motor shakes at idle now is anyone else using the mounts from auto zone or what are good mounts to use car is a 1970 442 with 455 small cam stock wheels and tires not a race car just a cruiser

 

Look for a spark plug wire that got knocked loose when you changed the mounts. Auto zone sells the same imported mounts that everyone else sells. The correct mounts would have been 2328 style

 

Are they Anchor brand mounts?

 

From AutoZone they are probably Duralast brand, made in the same Chinesium factory as Anchor. That still isn't going to make the motor vibrate.

 

The reason the engine shakes is due to a misfire, not the mounts.

 

thanks man the very rear plug wire was almost off the cap pushed it down on the post good to go thank you

 

Sometimes it's the smallest things...

 

these Chinese ones that are $10 will rip apart with modest power increases.

 

And yet, still not the cause of this misfire-induced vibration.

 

ya, imagine having to go online to find out you knocked off one of your plug wires?

🤣🤣🤣🤣🤣🤣😁

 

Joe, would you replace motor mounts with what is available today on a ‘70 Cutlass 350 c.i. 4-barrel as preventative maintenance if the original motor mounts aren’t broken?

 

I wouldn't replace them unless you can see cracks in the rubber. It's the driver's side that's under tension load, and the easy test here is to rev the motor with the trans in drive while someone is watching the motor. If the engine lifts excessively, replace the mounts. Otherwise, it's not really necessary.

 

Thanks, as always, for your expertise Joe.