The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Motor swap

So today I'm heading out to get my disc brake conversion for my 65. And along the way I'm going to stop and pick up a 400 small block I picked up but now my question is what all am I gonna have to do I should just need to switch out the motor mounts any help would be awesome.Hopefully I won't have to many more questions, and be posting some pictures of a finished product

We need to know what engine is in it now. I beleive you are going to have a lot more questions.

Sorry I knew I forgot something its the original 230.

That stock 230 radiator probably won't do the job very well for a 400. You may have to mod the throttle linkage. If you're sticking with the stock tranny, you may need a different flywheel/pressure plate. You're gonna need a bigger fuel tank....lol.

Or you can get the throttle assembly off a v8 truck and swap it out. Only 2 bolts.

Going from a 230 I am betting you will also need a set of V8 engine perches too. It won't be a simple slap her in deal, it will take some swapping of parts. It's not that hard, you just need all the proper stuff to go with it.

230 eng perches will work quite fine, just move to the rear holes.
the 230 b/housing, flywheel and clutch will all work. believe that there is a difference though in balancing; whether the flywheel is internal or external balanced to the 400 sbc eng ??
ron

it is the 292 i6 eng perch that is different on the right side

I did a similar swap in my 1964. It had an original thrift master six with a 3 speed. I put a 350 from a 1975 in its place.
I know the 3 speed will bolt right up to it without moving it at all. I also used the same clutch assembly (I was not worried about racing). I can't remember but if I recall my 350 was from a manual truck so it's existing flywheel worked.
I used the motor mounts from a 66 V8 that was in a boneyard.
You will have to do some exhaust work one way or the other. I just ran a new dual exhaust.
I tried running the original radiator but didn't trust the cooling capacity so before summer came on full I updated to a V8 radiator.
Depending on the motor that you are putting in you will have to modify some of the electrical. Mine had an HEI so that was part of the process.
Also, if you have power steering/brakes you will have to account for it as well.
That sounds like a lot and it is. But it went pretty fast and I liked the swap.

400 c.i is internally balanced as far as I know. They need a counterweighted flywheel (or flexplate) for proper engine balance. Take the crank from your 400 and find a cheap 350 4 bolt block. You won't run into issues with cylinder heads etc., will end up with 383 ci for just a little more machine shop costs. If you're replacing pistons etc., your parts bill will be less by going with a 4 inch bore. Just my opinion.