Just bought a 1993 F350 XLT Crew Cab Dually with a 7.5 in it and towed my toyhauler with it this weekend and seem like it was lacking in power from a dead stop and going up hills what have people done to gain power power and torque?

 

Without tearing into the engine, pull the SPOUT plug and advance the timing from 10 to 12-14 degrees.
After that, think headers and a less restrictive exhaust system.
Chips, throttle body spacers and cold air intakes are garbage........don't waste your money.
If you are really serious, there are a FEW cams that will work well with the SD 460.

I have yet to find a situation where my 460 was "lacking in power".........gas mpg?, lets not go there.

 

i disagree with old93, my 96 460 responded incredibly to a throttle body spacer,k&n filter, hypertec chip, msd e coil, 8.8 msd wires, msd rotor an cap and bosch platinum +4 plugs. I also opened up the air horns in the tubes from the filter to throttle body (now thats restrictive 2"hose with 1" hole, saws all chopped the horns right off, that alone made a difference). And push the timing to 14-16, go as far as you can w/o a knock. Everything i did made a considerable seat of the pants difference, and did burn outs with 35" BFG all terrain's an 3:55 gears NO power braking burn outs, 1/2 throttle til the tires broke loose, then mash the gas an watch the smoke.
Here's a break down from manufacturer's, throttle body 15-20% increase, K&N 10-15% increase, hypertec 15% increase, cutting air horns ? (less restrictive air flow), all msd, plugs and timing ? (seat of the pants difference).
Baseline 1996 460 motor, hp 245, tq 395, you do the math. All 8 cylinders had 150 lbs of compression. 4 bottles of seafoam, 1 for each gas tank, 2 into brake booster vacuum line to help clean out old gunk.
All for half the price of $650 long tube headers, BUT, long tubes an true dual exhaust with a cam is good for at least 80 horse alone. If you dont do the work urself, a mechanic will rape you on labor charges.

 

I am another in these forums to recommend staying away from throttle body spacers, cold air intakes and chips. I am sure 88dually has good intentions, but it is widely accepted after hundreds of posts on using these questionable devices on stock trucks of this vintage usually results in a lighter wallet.

It is generally accepted the best bang for the buck on these trucks is a tune up with good quality parts, check for and repair any items that may be triggering an error code then start looking at a better exhaust.

 

Wow, all that work I did going with aluminum heads, cam, roller rockers, intake, headers, etc. to get my 460 to make some serious power and all I needed to do was add some bolt on goodies??

245 Base Hp
+49hp (throttle body 20% increase 245)
= 294hp
+44hp (air filter 15% increase over 294)
= 338hp
+50hp (chip 15% increase over 338)
388hp

395 Base Tq
+79tq (Throttle body 20% increase over 395)
=474tq
+71tq (air filter 15% increase over 474)
=545tq
+81tq (chip 15% increase over 545)
= 626 Tq

Why thats better than the 547tq a 460 w/trick flow heads, comp 254 cam, aluminum intake and headers makes on the dyno...

And with the stock "breathing through a straw" exhaust too.

I KNEW I should have invested in one of these!!!
Butt Dyno [ARSE411] - $399.95 : KaleCoAuto, Hard to find automotive items!



Sorry, but after all the times I have ran into people that just bolt something on and instantly talk about the "seat of the pants" increase they got, I just couldn't resist

On a serious note, the first thing to do is let the motor breathe. The factory exhaust is a major choke point on most any engine, let alone a 460. Headers are great, but even doing true duals off the factory manifolds are better than stock. If you are in an emmisions state, headers, free flow cats, and better pipes out the back will help. Opening up the intake like 8ually suggests is also a good idea. At that point you are now letting the motor breath in and out better. Tweaking the timing some can help on the bottom end also. Once you have done those mod's you are about maxed out on what you can do externally to the engine. At that point you are now into the old fashioned way to build horsepower and torque. Different cam, change in compression ratio, increase air/fuel through porting and polishing, and don't forget a custom ECM programming to take advantage of the mods I just mentioned. A mallory or msd unit also helps on the lower end by providing a good solid spark (multiple's below 3000rpm) to help ignite things.

 

Do you believe everything on the shiny packaging?
I am not gonna be harsh, but the stuff you bought into does nothing, in fact it probably is hurting your performance and mpg.
Chips
"hot" air intakes
throttle body spacers
platinum 4 plugs
All things that time and again have been found here to be all just ways to part you from your money.
When you advanced your timing, that was the performance boost you felt,...... take that stuff off, go back to motor craft coppers, the truck will run better yet.
REAL hp gains come thru exhaust and cams, no other way.

 

Chips, throttle body spacers, hot air intakes, KN, even the MSD coil all does just about nothing. The MSD coil is probably alright, but he KN FIPK is a POS. I had them both and my truck runs just as good or better with stock Motorcraft parts it has now.

 

Has anyone tried the Banks Power Pack System?

 

Just remove the corks , more air & fuel in , more exhaust out , advancing the timing is allways good for a few hp , good tune up , autolite copper plugs , the MSD wires cap , rotor & coil are good , need a good spark , the exhaust is the bigest cork , long tube headers are the best , with a custom exhaust , anything you can do on the intake side , head work , cam & intake air flow , the stock air box & filter hardly flow enough for a stock motor , so like what 88dually did will help , need a good highflow filter , tb spacers , no help , over the counter chips , no help , your better to spend the money for a custom tune , thats worth every penny....Lew

 

you may also consider getting a reworked valvebody for that tranny. in stock trim that e4od is for sure lacking.

 

I agree with advancing the timing a little, forgot to mention that before.

 

i've got a 1996, f250 with 7.5L, and auto, 3.55 gears. it tows my toyhauler ok, loaded that thing is around 8500lbs. now granted thats on the flat or taking off from lights. up hills is another story. on the canejo grade which is 7% i think, i'm chugging away at 25-30 mph in 2nd gear. not sure of the rpms, dont have a gauge, might be slow up the hills, but she's never let me down, and she gets the job done. oh yeah, it's paid for.

 

Thanks for all the advise