I have an 85 burb with 6.2 n/a c code engine. I want to know how to get more power for very little money.:help:

...There's no easy answer for that, maybe best to browse around a little, see what guys here are doing to theirs.

Also, best place to start is to get it running right first, then worry about making more power.

Any problems with it so far? Other than its apparent lackluster power?

No problems runs smooth. Starts within 2 seconds when above 50. Sometimes quicker. Smokes a bit when its gotta pull its Censored extra hard in heavy wind but most diesels do just need a little more zip.

Smokes Black I take it? That means your not getting enough air to burn the fuel your already getting, solution, improve air flow through the engine.

Best place to start then is Exhaust upgrade, Dual 2 or 2½" or single 3" w/ hi-flow muffler.
Then maybe a performance air filter like K&N.

well that was my next area and its going in next month for it. I have also removed that intake silencer or whatever that box is.

could also disable or remove the egr completly. when you get some cash go on ebay and get a j code intake and put that on. that alone is told to bring in +15hp apparently.

What is all involved in removing the EGR? And what is the main difference with a between a c and J code engine?

This link, hopefully it works, should point you to a post which has already covered it. best to take some time and go through alot of the posts then come back and ask more complicated questions or for clarification.
http://dieselplace.com/forum/showthread.php?t=28956

Removing and blocking the egr works, and helps some but does not give the full benefit of more room in the intake for air.

of course theres always the what brand of air filter is best? arguement. removing the intake silencer was a good deal. try to have the intake tube the biggest size you can for more unrestricted free flowing air. Im going with 4" dia pipe to the filter housing where I will have 6" of filter waiting. takes only a little bit of sheet metal and $10 in dryer exhaust duct.

like its been said before, when you improve air intake you need to improve exhaust to get rid of it. many options are available of course. headers, different mufflers including glasspacks, some people have straight pipes, some have dual or single with differnt sizes. depends on what you want, money and how loud you want. http://dieselplace.com/forum/showthread.php?t=28547

oh and it helps to be in a state without diesel emissons checking

Now what would you guys recommend as far as placement of the ducting? Would you go to the stock air inlet or is there a way to get air straight from the grill as in ram air? And 'm not dead set on a brand of air filter, only that i like the idea of a cleanable filter so that you dont have to keep buying one every time. And i have straight duals for exhaust, is that factory, and i believe that it is 2 1/4 pipes and there is no h-pipe should that be all right and is that factory for '85?

I havent heard anyone with a grill inlet setup. its either off totally (too much hot air)or its straight from the rad support airinlet box.

factory exhaust for the 6.2L trucks was 2.5" I think, dual with one pipe going out each side of the truck. 1 muffler on each pipe. no crossover.

if you mean "straight duals" as exhaust with no muffler that go straight out under the back of your bumper thats not factory. hope im not wrong with the interp.

when yours rots off, Id go dual with a free flowing or no muffler with a larger size. plus maybe headers if you can swing it.

in my opinion the louder the better :ro)

Now you said that you used dryer pipe? Won't the ribs cause restriction? Would i be better off using furnace or water heater exhaust piping? thats just from my dad saying the ribs are restricting. But i do love the power increase i got i just need to open up the exhaust now! The only thing with straight duals is will there be enough back pressure to keep it running smoothly i have heard rumors about that.

i just want to know if you can get more power if you change the camshaft or change the camshafts slopes on a 6.2

Now you said that you used dryer pipe? Won't the ribs cause restriction? Would i be better off using furnace or water heater exhaust piping? thats just from my dad saying the ribs are restricting. But i do love the power increase i got i just need to open up the exhaust now! The only thing with straight duals is will there be enough back pressure to keep it running smoothly i have heard rumors about that.

I doubt the dryer duct would cause much restriction to worry about, its 4" diameter and most the ribs are on the outside, not inside. its flexable and fire resistant. plus its gotta be a lot better then stock. once you open up the room for more air you can turn up the fuel for more power. there are posts on that.

from what i understand, on diesels the less backpressure the better, if any is needed at all. here is a quote from cougarjohn on a exhaust sizing issue in another post..
The 2.5 inch dual will let your exhaust flow easier than a single 3.0 inch pipe. The two 2.5 in. pipes give a cross section area of 9.82 sq. in. versus 7.07 sq. in. for the single 3.0 in. pipe. The larger area will give you less back pressure. Headers with dual pipes would lower the pressure even more plus preventing the cross feed present in the exhaust manifold.
http://dieselplace.com/forum/showthread.php?t=25413&highlight=back+pressure

if you want to be loud just straight pipe it with no mufflers.

Biggest restriction in your exhaust is your mufflers. Ditch them and replace with a free flowing design, I have used glass packs with good results.

As for cam shaft replacement, for a street engine.. forget it. Want more power, force in some more air, turbo, ram air, what ever you can get to work. With the addition of more air, you will need to increase fuel delivery to the point of getting some black smoke at WOT.;)

I increased power by cutting off the base of the EGR and welding a plate over the cutout, installed solid intake manifold gaskets, cut out the butterfly in the left exhaust manifold, installed 2 1/2 duals with outlet in front of rear wheels, installed a balance pipe between the two exhaust pipes under the rear tranny mount, installed the heavy duty injection pump, advanced the injection pump timing about 1/16 inch, and installed a 4 in. duct to the air cleaner.

The four inch duct is an aluminum flex dryer duct. I removed the air cleaner silencer (really a restictor to air flow) and attached a 4 in collar to the air cleaner housing. I used a food can that I could slide into the dryer duct. I used another food can to connect the input end and put it through the sheet metal to the right of the radiator. My 1986 C30 has a 4 inch hole in that location that works perfect. I also wrapped the dryer duct with insulation (1/4 in. heavy density foam tape with adhesive on one side) to keep the air flowing through the duct cooler. I also wrapped the air clearer, including the lid, with the same foam. I got the tape from Boeing Surplus in Seattle. The inlet to the duct is right behind the grill so it get a little ram air pressure.

My first duct was the plastic duct that came loose and collapsed near Ft. Polk!!!! I lost 6 qts. of oil in less than 100 yds so don't use that stuff!!! Luckily I was looking to the rear thru the outside mirror when I saw the smoke start (from the oil getting on the exhaust pipe). I pulled over and shut the engine down since I hadn't driven thru any smoke!!! A lady member of Ft. Polk vehicle maint pulled in behind me and offered help, but I had plenty of oil in our camper. Another atta-boy for our service personnel!!!!

I will post a new topic on the results of the engine emmission test on the county dynomoter that was performed yesterday.

What would you guys recomend using for mufflers. Its not that i dont like straight pipes, i think they are awesome! The thing is I use my truck for trips and the fact is she dromes pretty bad at 70 on the interstate! I have been leaning towards the flowmasters. Are they good, bad, if good what model?

Hey guys added two flowmasters HOLY Censored ! The power i gained is unbelievable it can almost keep up with the takeoff of a 350!!!! Of COurse ive done most of what you guys suggested except for swapping the intake. Not enough green for that yet. I pulled up to my buddy's place and he gave me a thumbs up o the deep tone!!!!!:muahaha: :grd: :ro)

Good job, sounds like good work. if I remember right, I got my J code intake off of ebay for like $35.00. Ive seen some since then go lower then that, some higher.
other then that all you need is the gaskets.

What would you guys recomend using for mufflers.I got 3" pipe put on mine, and they asked if I wanted a 'stock' or 'performance' muffler, no brainer, gimme the power.I had dual glasspacks before, from the previous owner, but somehow I expected the 'performance' muffler to be just as loud.The put on a Ravin muffler, I've never heard of them before, but I was pleasantly surprised. I don't know how they sound on N/A engines, but most of the exhaust sound now is turbo spool. I highly reccommend them, and they're inexpensive to boot.

Hey guys i just thought that i would share with you a couple of cool run-ins with a county deputy and a state trooper! This state trooper and iwere side by side on a four lane hiway through town and speed limit was 35 and the guy was doin 20! So i passed him and i stepped on it and he gave me the thumbs up on the sound!!! Then the county deputy heard cruizin through town and he pulled up to me while i was giving the old girl a drink at the pumpss he came up and said neat sound and ill be happy to tell you that is legal! So that was awesome!!!!!

Nice to hear it's legal. Our emissions testing is going away at the end of the year and I have no cat(which was not required for my year truck) and dual 3" pipes out to 4" SS 12" Tips... Sounds real good
Mark
Oh yeah: No mufflers. ;-)

I don't know how the other 49 states do it, don't care how they do i here in Canada, but I know in Texas, if your vehicle is 10 or more years old, you get an 'emissions exempt' stamp on your title ;)

TDG,
Must be nice(correction: Used to live) to live in a state that is not so greedy....;-)
I'm not positive but I believe it is 20 years here(in most counties), but soon to change and just go to the higher priced filtered fuels.
Mark

NY has no emissions requirements on a diesel.... :) at least thats what my inpsection place told me!

Used to be that way here too until they changed it a few years back.
Mark