International harvester engin swap

international

#1

I have an International Scout 800 B with an in-line 6 engin. It’s strong but not fast at all. A friend of mine has a 345 V8 from a 72 scout 2 that he will give me cheep.
My question is:
How do I know if the motor will bolt up to my transmission?
I’ll be doing this in the driveway so I really don’t want to take it apart and have it not work.


#2

Maybe your friend has the bell housing for the V-8. If so you don’t have a problem mating the transmission. There may be some other inconsistancies in the swap of course.


#3

You might want to check and see which axles you have, IIRC the V8 models had beefier axles to handle the extra torque of the V8


#4

I’m curious as to why a larger engine is wanted. The inline 6s, both Jeep/AMC engines, were likely the best engines ever offered in early Scouts and the 345 V-8 doesn’t seem to have been an option on the early models. The V-8s offered were the 266 and 304.


#5

I can understand the want of the V8 but if it was me I would keep the Scout as original as possible and take my time putting it back close to new appearance. A full restoration would be costly but would that be nice.


#6

Just a guess, but the OP may find it difficult to keep up w/modern day traffic and feel driving that way is a little unsafe.


#7

The 6-cyl engine was available on the Scout 800 and for a short while, the 800A. It was not offered on the 800B at all. If the Scout has the I-6, someone put it in. Maybe they replaced an original I-4.


#8

The original Scout has developed a cult following and I believe that the first series was only offered with the half V-8-slant 4 engines. I would guess that an I-H V-8 would be a cinch to install but the gear ratios wouldn’t allow much use of the additional power of the V-8. Somewhere in the early years I-H installed the I-6 engine that was shared with AMC and it was totally adequate for the truck. The later larger model was a flop as was the Travelall. My experience with those early models was limited and my only source on their specifications is google. The earliest models shared a drive train with Jeeps and used those slant 4 engines. The 390 split was a monsterous 4 cylinder. I became somewhat tallented at repairing the front ends and front hubs used on the Scouts and Jeeps and had several shops refer their customers to me for that work.