Re: J PU Question for the knowledgeable
Could you post the engine ID number(little tag on valve cover)....I, or someone else, could probably do a little deciphering on the code for ya! That way you might know exactly what "year" this engine is. As for the rest of the combo...it doesn't sound "right". 360s were only used from like 72 to 87(and 'til 91 in Grand Wagoneers). Dana/Spicer 20 t-cases were the "standard" transfer case from 63-79. Some Dana 21s were used in Wagoneer(with auto) as far as my data shows from 63-69. Dana 18s were used in the Forward Control trucks...those big front end cab-overs Jeep made(from 57-64). These FCs used a T-90a or a T-98a tranny. T-90 and T-98a trannies were also used in some other full size Jeeps. I'd gather there could be some "interchange", and it IS possible that someone might have already done some changing to your setup. Remember though that engines from the 60s are different than the 70s/80s combos! It "sounds" like your engine/combo is from the late 70s...that is also the most "popular" era for Jeep pickups! For parts, you'll want to stick with pre-1980 stuff....it's most likely to match up! ESPECIALLY transfer cases....they went from passenger drop to drivers drop in 1980...VERY different setup! The 360/T-15 is a heck of a combo...I had that in my 77 Cherokee. Have had a 258/T-15 in a 77 J10 recently as well...another good tranny/engine combo, but not quite as gutsy as the 360. Have recently acquired the 78 J10 with a 258/T-18 combo, and doing a little "fixing up" before making it a regular driver....should be a good truck though! MOST of the 70s engine/tranny combos are about as simple for swapping as you can get, but some minor issues need to be take into consideration on some things, like 258->360 swaps require the 360 bellhousing and a 360 radiator, and maybe motor mounts, but otherwise are bolt ups! Let us know what your engine "code" is and I, or someone else, can give a shot telling ya what year you've got! The rest of your combo may need some "thinking". Have you checked the Off-Road.com "Jeep Tech" section? They have info on the engines/trannies/t-cases offered, AND some details on each...though they "focus" on the CJ/TJ types(what else is new?), but it's a good resource! If indeed it is a T-15, you "should" have a Dana20 attached to it! What are your plans for this engine/tranny combo?
('78 J10 Longbox, 4spd, 258cid)