Not Another Rebuild Thread....

[Captainfab]

It's hard to tell in the pic, but those original motor mount brackets don't look to be the ones for the 292, Are they both the same length? If they are, then they will work just fine for your 350. In these trucks the small blocks and the 230/250 used the same motor mounts and brackets. Those '85 motor mounts and brackets can be used as well. You will have to make a spacer on the top of the frame as these older frames are shorter than the '73-'87 C10's. I actually prefer this style of motor mounts as they are a much better design......IMO.

Originally Posted by McMurphy

Thanks K1, I look forward to that.
I was going to get the spring loaded plate frame like what is on the back of our Pontiacs, but when I was fooling around with this fill door, it struck me that it stays open, which the classic Pontiac ones dont do. I figure I will reverse rotate it 90* and mount up my rear plate frame to it and call it good!



Yeah, again last night, the freekin bolts that marry up the brake booster to the resevoir are 15mm. Le'Sigh.....
Started refurbishing parts last night, got the sway bar ready to mount up, Power Steering gear box, and the Power Brakes set up done.

My question of the day....
In this pic I have the frame mounts for the 350 that came out of the GMC Sierra on the left, motor mounts are still on the engine.
On the right are the frame and motor mounts from the IL6 292 that was in the truck originally. I have seen on this site what appears to be guys who have used each of them, and each with some sort of modification.

Either the left ones from the GMC where the bottom holes will bolt right in to the crossmember with some shortening or adapter plate on the top frame rails.
~OR~
The IL6 ones with an adapter plate to fit the motor mounts that are on the engine now.

My question at this point is which is better?
The concern I suppose is going to be fire wall clearance, and forward-back distances for the radiator and driveline......

Any ideas, or am I going to have to trial and error this by mocking it all up first?