Thread: Motor mounts not lining up

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Originally Posted by cffisher

I was just out in the shop and looked at some spare mounts I have.....There is no way you could put them on wrong... They are made to be fool proof. You may have a bent one???/ Anychance you can get thwe old ones back off your old engine....If not Ebay has them

That's what I thought... I couldn't really put them on wrong. I'm going to try to get my old mounts back... spent all morning looking through old phone bills trying to find the guy's number

Originally Posted by rspears

Are you sure your frame hasn't been tweaked? Were the through bolts easy to pull from the old mounts on the old engine, or was it maybe binding a bit? Your pictures seem to point to the frame rails maybe being a little too close together which would tend to push everything up.

I'm pretty sure it hasn't been tweaked. I've looked at a lot of 4x4 frames, and it looks just like any other one. There are no obvious signs, at least. The through bolt was very easy to put on the mount (when the mount wasn't on the frame). When the mounts were on the frame, getting the one side through-bolt to go in was very easy, but the other side wouldn't line up.
I agree that if the frame rails were just a little bit further apart, everything would go in very nicely. But if my frame rails were off somehow, wouldn't everything else be off? My core support lines up properly, the bumper lines up, etc. I took the entire front clip off this truck, and didn't notice anything. If my rails were off, I would think my core support wouldn't line up anymore.


There's a guy down the street (who is also stumped by my issue) who has about 10 4x4 trucks without engines in them, I'll try and go up there today and take some measurements.

Originally Posted by 1gary

Some of the GM trucks had multi tranny cross member holes for different trannies.If you either swapped the tranny for a different one or have that cross member in the wrong hole,that would effect the engine mounts.

The tranny that was in the truck was a TH400, not what I'm putting back in, and not what came with the truck from factory, either. The transmission cross member is not currently installed (it will be once the tranny gets in). Are you referring to the crossmember directly in front of my motor mounts? I'll check it out tonight.

Thanks again for all the help. I'm going to get measurements off a different truck tonight, and try to call the guy I sold the engine to to see if I can get my mounts back.