Motor Mount Perches For 66 W/85 Disc Brake Conversion

[Mathew21]

Originally Posted by Captainfab

If you want to use the style of engine mounts used on the '85, you will need the frame brackets (perches) from a '73-'86 C20, C30 or a '87-'91 R2500, R3500.

I was going to go this route in my 66' with my 5.3 swap. I have a set of frame perches from a 78' C20. But it wasn't just a bolt and go. I would've had to trim my frame some. I ended up using my stock perches. I'm going to list the 78' C20 perches in the classifieds in the next few days.

This quote below was taken from Captainfab from this thread: http://67-72chevytrucks.com/vboard/s...d.php?t=204885

Originally Posted by Captainfab

If you want to use the '73+ motor mounts, you will need a pair of frame brackets (perches) from a C20. They fit the frame height better than the '73+ C10 brackets. You will still need to trim the top flange of the frame back about 1/2" or so.

Or do as Tx Firefighter recommended, get a set of '68-'71 big block mounts