63 GMC v6 to v8

[jtrichard]

Hi guys i am picking up a 63 GMC 1/2 ton granny 4spd. with v6 that has a BAD rod knock has juice clutch looking to put v8 in..... i have a 62 v8 juice clutch bell housing what are the differences if any with the front mounts?? later i will be putting a 3/4 cross member in with 8 lug and disc.... as i already put an 8 lug rear in years ago for the guy that owned it .... when i do the front i will have to update the dual master to power and separate clutch master or change the clutch pedal and linkage and bell housing any ideas????

[Captainfab]

The V6 and the V8 front motor mounts are totally different. The '60-'62's that had the V8 and a manual trans used just the front horseshoe front motor mount. You could use the '63-'66 I6/V8 motor mount brackets. I would think the holes would be in the frame and crosmember already on the GMC. Those should also bolt up to the later crossmember when that time comes. Myself, I prefer the '73 and up clamshell style motor mounts. The motor mount brackets from a C20 or 30 will fit the early frames nicely. The C10 brackets are longer and require a spacer on top of the frame.

I do make a power brake booster bracket with the hydraulic clutch for the '60-'62 Chevy's and the '60-'63 GMC's. There is a link to the for sale thread in my sig line.