The Stovebolt Site Forums The Shop Area Engine Shop Front Motor Mount Height

I pulled the 207 out of the truck this weekend preparing for the engine swap. My front motor mount was completely crushed, with the destroyed rubber squeezing our the bottom. The motor plate was pretty much down on the crossmember. I read this tech tip which shows a picture of how the front mount is supposed to be. https://www.stovebolt.com/techtips/engines/motor_mount_front/installed.jpg

Roughly how high off the crossmember is a good front mount supposed to be, assuming proper clearances? I need to know this to figure out what I'm going to do for a front mounting solution (a 235 does not drop right into a '36) I posted about pulley sizes and interfering with the crossmember in another thread which directly relates to this. Plus in general I need to know where the engine should be properly sitting.

Thanks!

Ron

This is a picture of a 50 GMC , 250 series It about 3/4 " high and is the stock replacement from several parts resellers.

I have a 235 in my '46 and mine looks like this.

Thank you gentlemen!

That 235 measurement is more accurate than my estimation.

Your rear/torque tube, trans and bell housing will dictate where the engine will sit (front to back). The carb usually sits level with the ground...that will give you the side view angle.

Mike B

Looks like we are using the same front engine mount.

If you aren't using the original torque tube, the u-joint angles must match and that will dictate motor-mount height. One of my factory manuals says not to use front-end shims to raise the front of the engine, so that's what I did. It doesn't vibrate and the shims haven't worn their way into the cross member in the last 100.000 miles.

1Ton...I figured I would work the pinion angles from the opposite direction. Set the motor, and adjust the rear end pinion angle prior to final welding the spring perches onto it.

I originally asked about the front motor mount height because I was considering making side motor mounts, and wanted to set the engine at the factory height. Now I'm working on fabricating a front motor mount instead, so will just be using a stock front motor mount. But if I need to adjust the height later, should be easy enough to do. Thanks for the reply!

I had a more complex situation with two driveshafts and a transmission in the middle, all of which had to be taken into consideration. Had to shim the auxiliary transmission to after mounting it on rubber.