Correct engine clamshells for 85 K10 small block truck
 

Trying to help a buddy out whos trying to put new engine mounts in his truck. The truck is a mutt but the frame is an 85 K10 frame and he has a 383 in it. The old mounts must have been so shot that it didn't matter what clamshells he was using. so now he's trying to put in new stock mounts and absolutely nothing lines up. Mounts are regular stock SBC mount, clamshells are the tall ones that measure 2 3/4" from face (block mount) to centerline of bolt hole. It puts the drivers side way up when the passenger side is bolted in, this is also with the strut spacer behind it. I gave him some shorter clamshells from a 6.5 diesel truck and they were closer but still off, the measure 2 1/4".

Anyone have a clue what could be going wrong? Or if he has the wrong clamshells in general?

Re: Correct engine clamshells for 85 K10 small block truck
 

This is what he's dealing with.

https://i.imgur.com/g7a2a5Ml.jpg

https://i.imgur.com/tKpvuj7l.jpg

https://i.imgur.com/OXIKglEl.jpg

Re: Correct engine clamshells for 85 K10 small block truck
 

Clam mounts upside down?

Re: Correct engine clamshells for 85 K10 small block truck
 

Years ago, I had the same Issue as this.

It was a 2WD / 4WD thing.

Maybe the mounts on the engine are for 2WD?

Re: Correct engine clamshells for 85 K10 small block truck
 

the 4wd use a short clamshell, due to the brace bracket that bolts on behind them. the cars used the short clamshell as well.