safely get more power with 260,000 6.9?
My '86 6.9 has 260,000 miles on it, but it runs great. Starts well until it gets cold, which I think is a gp/controller issue, has plenty of power for a 6.9, idles well, sounds good, etc. It smokes a little bit of grayish blue smoke when you get on it and when you fire it up, and if you pay enough attention, there is always a little smoke coming out from under the oil-fill cap. This truck was always taken care of, serviced regularly, and never driven particularly hard.
My other truck is a 460, which pulls better, but of course gets less than half the mileage.
I really would like to begin towing my camper with the 6.9, because the 6.9 gets 15 mpg unloaded, and the 460 gets around 7 unloaded, 6 pulling. I'm guessing I can get 10 pulling my camper with the 6.9. I would reaaaaaally like to be able to get a few more ponies out of the 6.9 before I pull my camper with it much, at least up to par with my 460. I tend to let pride get in the way too much and try to prove I can pull with the big boys out on the road lol, instead of letting it slow down at its own pace like I probably should.
The dilemma is, with so many miles on the truck, I'm not sure what would be safe to do to it to try to get more power. I would love to put a turbo on it, and had a chance to get one for 700 bucks, but have been told that could prematurely "blow" it since it has so many miles, and apparently has worn rings since it smokes a little. What are your opinions on that? I also know I could turn up the IP some, but I know that can be playing with fire also. If I only turned it up one "flat" would that be safe enough, if I also installed a pyro? (if I do anything much I will install a pyro)
It is already straightpiped, and has been retrofitted with a ps airbox from a '94 f-350. I've been told on here that a ps airbox is not that great, but the good thing about it having already been fitted with a stock box is that I can buy an aftermarket airbox for a powerstroke and put it on this truck. Would it be worth my time and money to get a good cold-air intake for a powerstroke and put on here? My daddy put one on his truck and has been pleased with it, I believe the brand was a&e. It has a 4.10 rearend too, which should help some.
Is there anything else I can do to try to get some (fairly) cheap, *safe* power out of it? Even just if it's tuning some stuff a bit?
87 f250 4wd LB ex cab 460 bored .60 edelbrock intake, towing cam glasspacks-6 mpg 8 on good day- my pride & joy once towed my '85 j-co j-crane 28' 5er
99 F250 7.3(engine stamped june of '99) 250K white ex cab lb, 2wd
jl audio slash 4ch amp, jl 8" sub, focal components front, infinity coax rear, 10 disc changer
-tymar intake, no muff
-bullydog egt, autometer boost
-f5 chip w/80t, 80e, 60t, 100, 140 extreme(140 is amazing!)
Chrome fender trim, 265 nitto terra graps, nerf bars, billet grille, '06 headlights, chrome door handles, louvered 5er tailgate