All that counts, is that you are happy with the set-up you've chosen.

Check my sig, for my mods. It took about 1500 miles, for me to notice a difference in the performance.

I actually spun my tires by accident yesterday, and was surprised. I have gained some low-end, and maybe even a lil' top-end. My mid range power is about the same, as far as I can tell.

R1968

ps. You will not find any monstrous gains, from any one upgrade, unless it is a Supercharger.

 

Ranchero 1968,

Thanks. The only thing I was unsure of was, did I want to REDUCE my exhaust pipe diameter from 2.5 to 2.25. ha!

I think with adding an electric fan(s), the 2 piece underdrive pulley set, taking just a little more slack out of my throttle cable, and getting shorter tires when I put a 3-4 drop kit in, I should have faster take-offs and be able to spin my tires even better.

But, I will not be able to "white smoke" my tires until I get a supercharger.

 

Iron Horse,

Glad to hear your exhaust turned out good. One thing that doesn't make sense to me though

"Also, before the muffler change, my rpms (with overdrive on) at 65 miles per hour were at 1,750 (before the Superchip install they were at (1,800). Now, my rpms (with overdrive on) at 65 mph is 1,700 even."


You geared down not up? You are using bigger tires? In TCC lockup, in a given gear the raito can't change on its own.

Anyway, not that its a big deal to me, but something is odd.

I took the muffler off my 99 SCab and it didn't do anything but make more noise. Sounds like to figured out a cheap way to a little more power.

 

Your rpm at any given mph should not change unless the torque converter wasn't locking up properly. If the torque converter is locked as you know the rear end gear ratio, transmission gear ratio don't change. Sounds bizarre?

Glad you like your new setup though.

 

Its odd to me too.

I thought, with a little more torque at the low end, my mid and top end rpms would either stay the same or increase a little. I guess my engine is not having to "work" as hard with the freer flowing muffler at highway speeds yet, the freer flowing muffler with the stock diameter exhaust pipe has somehow slightly increased air velocity at wide open throttle?

I noticed after the superchip, and opening up the stock airbox my rpms decreased a little at 65 mph (that is the speed at which I watch for any change with these mods.)

After, the muffler install, it did it again.

I am hoping that, after the underdrive pulleys and the electric fan(s) my rpms at 65 mph will decrease some more. I may eventually get some type of aftermarket air intake kit (airforce one or K&N?) but, when I took out the stock airfilter tube silencer, I actually "felt" a loss in low end torque, so I put it back in and got it back.

I know my rpms will increase when I do get shorter tires and if I get the 4.10 gears. I hope that some of these mods. will off-set some of that increase?

I have to go get some gas (I was low before I went out again, to try out my new mod. At that time, I will re-check my rpms again. I will edit this post to verify the lower highway rpms.

But, newsflash! I am not buying another mod. until Neal "the HP Freak" Newman and Mike Troyer start showing what mods. they have to sell, since they teamed up.

 

Okay, its later on the same Saturday.

I went and filled up the tank and drove it and drove it (about 60 miles worth of testing). I monitored speed and rpms on "level" portions of highway with constant pressure on accelerator pedal (while trying not to wreck!, no wonder people get after market gauges!) Here are my checked and rechecked and rechecked results:

at 65 mph, my rpms are......1800, not 1700 da**!!! I do not know if I was too excited with the extra torque or what. But, I was wrong. I actually increased rpms by 50 not decreased rpms.

But, I do have a little more torque at the low end. ALso, this full boar muffler is not loud, infact there is not much difference in sound from the stock muffler.

Another observation. I do not know if I am just use to engine power being "felt" in a lighter vehicle (firebirds), but when I was going 95 to 100 mph it "felt" like I was doing 60 mph! The only time I "feel" the power is on take-off or if throttle is wide open, which is more noticable after the muffler install. However, I can tell from passing other vehicles, that these F150s can accelerate quickly. I t must be because the truck is so heavy?

Anyway, there are the dirty and nasty results. As the comic book hero Human Torch says, "Flame on!" ha!

 

No flames man ... I'm glad to hear your RPM's are basicly back to where you started. It means two good things. Your tranny isn't doing something exotic that would likely lead to something like a failure. It also means you haven't violated the laws of physics.

I took a high speed run to the hospital last week. I typically don't see any triple digit speeds, just not worth the risk to me (no flames, just for me). At 110+ MPH the truck felt like it was doing 75 MPH. I know what you mean about it feeling like it is going slower than it really is.

As a last note: The trip to the hospital was a false alarm. It looked like a stroke, but was actually multiple medicines interacting. Scary, but reversable.

 

adaycj,

First and foremost...I had to make an emergency run to the hospital about year ago because my wife was having severe chest pains. Turns out that she had a reaction to taking two medicines at the same time that both were prescribed for her at the same time by the same doctor! She had a sinus infection and took one medication, but after taking the alegra D (drys up sinus) her chest began to hurt. Everything turned out fine.

As to the exhaust stuff, I am really confused now! After I put the underdrive pulleys and electric fan(s) in, I thought that my rpms are suppose to go down? I thought that with less "drag" on the engine, it would take less "work" for the engine to maintain a certain speed? No? yes?

Also, going 100 mph in a stock height truck is very dangerous. I even have front and rear hellwig anti-bars which made a world of difference. Yet, at very high speeds, too much wind gets under the body. After a few more hp/tq. mods. I am going to put a 3-4 lowering kit in and get shorter tires.

 

I have two words for you,"LINE LOCK", if all you wan't to do is smok'em, then this is the cheapest way, line lock will get a vw to smoken tires, easy to install, and once you greas,em you will smok,em for blocks, or 100' anyway.

 

wildcat,

Can you tell me more about Line Lock. I have hear this before but can find no information on it. Thanks.

 

When I had my racecar (Dragracer), we used line lock to help warm up the slicks, the one I had was made by Hurst (Like the shifters) and it is installed on your front brake line only, you push down on the brake pedal, depress the line lock button, and let up on the brake's, thus, the line lock keeps the front brakes applied, just add throttle, and you will fill the cab with smoke in no time, and is fairly easy on equipment, (Far better than doing power brake burn-outs, ie one foot on the brake and one on the gas, reall gets s*** torqued up, and that is when they usually go fling across the road ,parts and pieces anyway). Have fun and be safe, they are around 45.00 for a line lock.

I wen't surf'in for you, and found the part, it;s actual name is Hurst Roll Control, and you can buy it from any speed shop, or you can get ripped off a www.sumittracing.com, they list it for 107.00, but look around, summit isn't the best game in town.

 

wildcat,

Thanks for the info. and thats alot cheaper than getting a supercharger!