a mild 4bt or stock pre 94 oem offering wont hurt a ranger frame in a street application.
a cummins 6 bt will require body mods of some sort depending on the model of ranger and the year of the engine.
with ttb my ranger was over 2900 pounds on the front axle, and i beat the holy living hell out of it regularly...
.... with a d60 and 6.5 diesel i am @ 3600 pounds with street tires and cruise weight.(yeah thats just the front axle) with stout springs it handles great on the road belive it or not...
some would ....actually quite a few argue my frame is considerably weaker then stock. maybe it is....i know the back part from the rear of the cab on out is. i am running similar power levels to a stock efi truck 302 currently. with a turbo and a few other mods i will be in excess of stock 1st gen 12 valve models and par with 1st gen psd. but with a much quieter engine that is 3-400 pounds lighter.
regardless, no worries on the frame for normal use and the light wheelin/recoveries i currently do.. once i have lockers again the frame will be beefed for sure.
with tib or ttb i would run 250 van springs...but likely go to 44 outers or high end stang stuff for brakes on a 2wd.
but extending the wb and running a solid axle on a 4x4 or a heavy mod m2 setup on a 2wd is obviously the best choice for a 6bt.
easiest is the 4bt and turbo mechanical injected 6.5/6.2 gm diesels for medium power applications. for top economy the 4bt.
i have not tried a powerstroke yet.
but you never know whats next for me
