What is the difference between long tube headers and shorties??? I got a little discouraged last night as I was reading efureins posts on his OBX header/exhaust install. I was discouraged as his Dyno only showed like 6HP I believe. I don't know if my wallet will allow me to do what I want as I was wanting headers--hi-flow cats---muffler---tips and thats it. I want to delete the pre cats but I have to remain legal. If efureins setup only yielded 6Hp, I doubt there'd be much of a difference with Shorties---correct???--DirtySCREW

 

his were peak gains on a stock tune i believe (could be wrong). I bet if you look at his gains in the ~2500rpm-3500 region I would be willing to bet they would be in the 25whp 25wtq region.

I saw a decent gain out of my OBX headers

 

a custom tune will gain your 35/35 on LTS. stock tune like on his, only gained him a small amount. shorties are really just for sound, and replacing your cast iron manifo;ds

 

Yea built54 dyno'ed the difference between LT's and Shorties. He was already running custom tunes and I'm pretty sure the SAME tune showed a 30/35 difference. It's going to depend on the tune.

I made two vids, one before LT's , one after. The vids are posted on this site. Running the factory tune I gained 6 seconds 0-80.

 

those were not peak gains you know. Also he was full bolt on with a non pi block with the pi heads so 10.5:1 compression and cams as well.

 

Get it straight, those WERE peak gains. Yes your right here, it was on a nonPI block running a PI swap blah blah, - the point I was making was that nothing was different when swapping shorty headers to LT's accept PEAK #'s.

Guess you might want to ask him yourself or look up his posts. If you don't believe what I posted as well, about my truck, I'll put up the vids and if you can count, you'll be able to verify that as well.

 

At peak power, how much do shorties produce over stock manifolds?

 

4.6 Punisher---you hit the nail on the head!...

I guess a BETTER question that I'm trying to get the answer to is:

What do shorties produce over stock manifolds and what do Long tubes produce over stock manifolds??

I have a exhaust manifold leak and don't want to break the bank. I just want to get the most power I can for my $$$. cause I still need an exhaust!---DirtySCREW

 

An exhaust leak will not help your MPG goals. Your A:F ratios will be off.

 

Do LT sound different than shoties?

 

Norm--A:F ratio??

I understand it may not help MPGs but more power is always a good thing(compared to spending as much OR more on stock manifolds)---DirtySCREW

 

Air:Fuel Ratio. Remember when you have an exhaust leak your spent gases leak out and air can also be drawn in. This causes incorrect readings on the O2 sensors and the computer will incorrectly adjust fuel based on this fault. Depending on how bad the leak is it could really screw your MPGs.

 

I'm in the same boat as DirtyScrew - leak in my manifold...Ford wants a fortune to replace with stock. Shorties seem to be cheaper...and really don't have the money for long tubes, esp seeing as the new exhaust won't come along for a while! I think shorties will just produce a deeper sound - no real change in HP gains? That would be fine for me at this point.

As for a simple replacement, reading through threads it seems that long tubes require a buttload of extra work vs direct bolt on?

Love to see who else could chime in on this thread!

 

yea Norm...my dad advised that I could suck up cool air and warp my valves and to get it fixed ASAP. I just don't want to spend X when X+1 could have given a better result. I was first looking at JBA shorties. Now I'm undecided on long tubes or shorties. I've seem some LTs for about the same as Shorties---granted they are NOT CERAMIC.....but I don't think that matters as much...compared to going from stock manifold to a header---DirtySCREW

 

Someone here got Bank torque tubes and gained 2mpgs. Maybe look into thse. IDK if they make them for your generation or not.