The Stovebolt Site Forums The Parking Lot '60-'66 Trucks 1965 gmc stepside v8 swap help!?

Hey guys I'm new to the forum! I have a 1965 gmc pickup step side. The frame is dropped, cnotched and spindles in the front. I will be posting pictures soon! It has the standard 292 straight 6 cylinder engine with a 4 speed. I have a fresh built 350 that I have been working on that I want to swap into it. I know that I will need new engine mounts, any advice on a brand or type? Also I know that I will need to update my rear end? not entirely sure what is in it , going to post some pics of that later also. Along with the drive shaft size too. Thanks guys for any help!!!

6 Cyl and small V-8 used same mounts. Left perch is the same but right is different.

okay cool gotcha, what year perch? or were do I get the the right perch?

okay gotcha

63-68 at least are the same maybe even thru 72. Junkyard probably, there is 4-5-6chevytrucks.com. you could try. What condition is your 292 in?

Just move the passenger's side mount bracket back to the same position as the driver's side. V8's and 250 6 cylinders use the same bracket, they're just offset on the frame rails for the 292. There's no need to use some fancy aftermarket mounting bracket unless the butcher job on the frame has made the stock mounts a moot point.
Jerry

292 passenger side perch is different from the rest. you will need one from either a 230-250 I6 or a 283. to illustrate to the ones that say otherwise check this link.
http://www.persh.org/pickup/perches.htm
ron

Its in great condition , it still runs. I just want some more power and have a 350 that I built for another projecting sitting around.

Awesome! Thats sounds simple enough, So just move the passenger bracket back to be even with the drivers side. What about drive shafts? Any Idea what might work? I'm working on getting numbers/ opening up my rear end to see what gears I have to work with.

the 292 perch does not just slide back and work. the 292 perch also doesn't come out as far either. you will have a mickey mouse job
ron

So do you recommend buying new pre made mounts ? or getting the other mount that actually works? Also Do I need a new transmission crossmember? I'm keeping the four speed. Thanks!

all that you need is the pass side perch for 230, 250 i6 or 283. . crossmember at the bellhousing is fine. the perch is not hard to find.
ron

If you are interesting in selling the 292 send me a private message. I am in the Rome, Ga area and I do have an extra perch. Are you planning to keep the 4speed if so I have the V-8 bell housing cross member. If you swap to an automatic transmission you will have to remove the cross member that the parking brake linkage is connected too. You can however use the 66-68 set up. 66 was the first year that a turbo 350 was offered in trucks. The 63-65 parking cable-cross member set was in the way of the transmission tail shaft, therefore 66 was different then 63-65. All that said with assumption that GMC's where the same as Chevrolet. You will probably have to get a drive shaft made.

Sorry I did not look to see that there was 2 pages of post before I posted the above reply. I do have the perch you need and if you leave the bell housing cross member as is your drive shaft will work and you will use the rear set of holes for the motor mount perches. With a small block V8 your distributor will be close to the fire wall and fan will be a little far from the radiator. With that said I drove my 66 daily for 3 years with a 327 setting in the 6 cylinder position and even with an HEI Distributor and a clutch fan with no spacer the distributor cleared the firewall and I didn't have any problems with the engine overheating.

66 was the first year th400 trans
ron

sbc does belong in the rear holes.
ron

What engine use the front holes then?

292 uses the forward hole on the passenger side. 230-250 I6 and sbc use the rear holes,
ron

If that is the case I don't understand why there is a front hole on the left side.

sometimes in life there can be a lot of things that you cannot understand. Though that is how those specific engines mount.
ron