12 valve to replace 6.9 IDI
 

so i have an 85 F350 4x4 with a 6.9 IDI w/ 4 speed no o/d manual trans and the stock 4.10 gears. Its a dog. I can get a 12 valve out of an old ups truck with trans, intercooler, radiator for $1500. What would i expect to see in change of performance? the trans with it is a 2wd trans which i dont think it would matter because of the monster transfer case on mine. Will i need a new driveshaft made from trans to transfer case? Also what will this project involve?
thanks,
Erik

big project but you would have a awsome truck when it is done!! And 1500 for the motor is a fair price.

Look up Destroked

right now i'm hopin my cherry picker will lift that engine. i'm thinkin about puttin the trans in from the bottom but the engine is supposed to weigh in the neighborhood of 1100 i believe. i could be wrong. but i cant get my bumper off at the moment. apparently 25 years of new york has convinced the bolts not to move so my cherry picker will probably be at its longest extension which reduces it to 1/2 ton i believe

any body got any ideas on what this is gonna take? anybody think i should just go with a 7.3?

Engine should be 1100-1200 pounds.

What year is the Cummins? First gen with the rotary VE pump I believe will run on 1 wire, and a second gen 12V with the inline P-7100 takes 3 to run. Both are desireable engines in my mind.

7.3 is a decent engine - but I dont think its got anywhere near the durability or longevity of a Cummins medium duty diesel engine. Transplanting either engine will be a big project and will involve custom fabrication and/or parts.

www.fordcummins.com sell parts and a how to guide for the conversion. also Destroked.com (which was already mentioned) has parts as well.

I can get 94-96 engines out of ups trucks ranging from just rebuilt to 200k miles. the only thing with the powerstroke is i just bought a new cab for my truck which is off a 94 f-super duty that had a powerstroke

Well the engines in UPS trucks are 4bt's arent they?

negative. 94-96 6bt idk about all of the ups trucks but these are 94-96 and 12valve 6bt

uh. ok. I dont think you would be sorry if you went with a Cummins (provided you did a little bombing).

haha of course. i wont have the cash to right away. i'll probly have it stock for the winter. how are they stock? and for powerchoke how are they? i like my IH other than it being slow. but as far as electronic tuning is there anything to be done electronically to make it worth choosing the powerchoke?