allblack

I am looking to get a pair of headers for my 95 gt and i was wondering what the difference between the short and long tube headers. price, hp gains, ext.
thanks

allblack

also what size pipeing would be best? and are the flowmaster 40's very loud? im looking for a semi quiet muffler plenty louder than stock but not so loud it is over poweing in the car.

is a high flow cat. worth it?

jeep45238

Long tube equal length headers. They'll be more of a pain to install, but it's not like you install/uninstall them every month, so why not bite the bullet a bit and get more power out of the deal?

WhiteHawk

yep.....I agree, long tube equal length headers -- def. the way to go.</P>


I have flowmasters 40s with NO cats, it's definitely a low power grunt which is NOT over powering, I can either ride with the windows open or shut and the radio on low and still hear the radio clear with no problems.But theywill be louder than stock.</P>


ps. -- H pipe</P>

allblack

ok but how difficult will it be to install the long tubes?
should i get a new h-pipe or go with the x-pipe?whats the difference.

jeep45238

X pipe. Adk Gunner about how hard it is to install, he recently did a set on his 5.0.

Definately get an X pipe. The difference between an X pipe and an H pipe is this: one looks like an X, the other an H.

However, the X directs the exhaust flow more effeciently and effectively, as well as increasing the scavaging effect, which leads to more power.

Hot Rod did a test between X, H and open headers, and if I remember correctly, the X pipe made more/equal amount of power as the open headers.

Check out this Car Craft article, as I was unable to find the Hot Rod one, but this adressed the same issue:

http://www.carcraft.com/techarticles/69238/index.html

I strongly dis-agree with their "loss of torque because of less backpressure" argument.....in fact I flat out say it's an old wives tale.

But, to sum up the dyno :
Open headers: 333hp/304 ft lbs
2.5" w/ H pipe:323hp/296 ft lbs
2.5"into 3" w/X pipe: 335 hp/302 ft lbs

The choice is pretty plain to me.

WhiteHawk

oh hell yeah, if you already have the X-pipe definitely keep it....I would rather have an X.</P>


you know, if you actually think about the design and how the exhaust flows in pulses which create a vaccum for the next set of pulses....an X pipe wouldbe the logical choice. -- smooth flow, no 90deg. turns like in the H.....</P>


hec, if it was up to me, the headers would go into the collector and then straight out...no mufflers, cats, no turns....just straight back out (if stuff weren't in the way i mean) (differential...etc...)</P>

horatio102

I've heard of ground clearance issues with the long tube headers. And seeing as how my h-pipe was all kinds of caved in where the end of the long tubes would have been, I'm going to have to say for a street machine get shorty equal length. It's much cheaper and easier to replace a $120 H pipe than it is to replace a set of headers should you bottom out going over a bump.

Redline5th

this tru?

horatio102

The bend where the H pipe goes horizontal after dropping down from the header was about 1/2 as big around as it used to be. I don't know what suspension parts are on my car (bought it that way) but it's slightly lowered and the springs are pretty darned firm.