NotQuiteSane said:
It's not been to NM, has it? non-IH freind sent me an ad for one down there for 16K. I'd perfer to spend a bit less.
Not that I'm aware of. Dan Youngquist did the 6.2 conversion in Eugene then moved to Idaho and the last I heard, it was sitting in the back corner of his place in Idaho, neglected.
Do you know how the one Comer did performs?
If he told me he did that swap, I've forgotten all about it.
As for motors I wish I could have the available parts the chev,ford and amc's have. How's the 392 good following? Dose it fit in a 800? Dose it make that much more power than the 345 to make it worth it. I ask cuz I am a fan of keeping it IH but want more power with the option of bolting on more...
A 392 will fit anywhere a 345 will fit.
A 345 is slightly taller and wider than the 304 or 266 that would've come from the factory in an 800 (assuming it's a factory V8).
Lots of folks have done 345/392 swaps into 800s. Depending on your acc bracket setup, you may need to clearance the inner fender for the alternator (or change brackets), and you may have carb/air filter to hood clearance to deal with, but neither are a big deal.
The simple answer is "yes, bolt it in.. you'll have minor issues, if any"
As for More Power...
I pulled a tired 345 out of my tow rig, and put in a solid running 392. It pulls better, no doubt.. but it was a tired 345.
That said, the tired 345 still hauled around 14k+ lbs at 60-65mph and managed around 10mpg doing it. Engine wouldn't turn any faster w/o the lifters starving for oil and self governing.
The 392 does 9.5-10mpg pulling the same and heavier load at 75mph.
I hope the built 392/406 does the same mileage and a little better on accelerating and/or holding speed up the grades.
I have a built 304 that, in a straight line and not haulin' a trailer, will put my unladen 392 to shame (and as soon as I make the truck 4x4, I'm going to get some time slips to compare..)
392 might beat it in a sled pull, though.. hope to get a chance to compare that, too.
Depends on how much money you have.