how come there isnt any threads on people putting purple hornies after the headers wouldnt that be the cheapest and easiest way to ?i plan on putting hooker 2210s straight to dynomax bullets since we dont have pollution %#@#@ around here

 

As swell as that would be... you will still need to have a H or X pipe. Otherwise you might as well go w/ a 3 inch single pipe cat-back.

You'll need to put the X or H pipe as close to the headers as you possibly can, the warmer the exhaust air when it passes through the X or H, the more ponies you'll be freeing up.

Use an X pipe if everything is exactly equal in length when they connect to the X pipe. Otherwise use an H pipe. The X pipe is better, but the H pipe is more reasonable.

 

if you did any kinda of searching, you'd see the huge amount of threads on this topic, to include one in the FAQ board that is all about true duals

 

just curious what your transmission oil temperature is with the duals running right past them there. Or did you get a tranny cooler line?

 

no idea what the temp is, but it's never been an issue. it does have the factory tranny cooler in the rad, but i am putting in a new tranny w/ shift kit and other goodies (basically a Pro-Built 700r4 w/o the huge price tag) w/ an ATI converter w/ a high stall, so i am going to go with a smaller stand alone unit to keep things cooled down.

 

i was gonna try this on my car but the clutch slave cylinder gets in the way if you have a t-5. and even if it were an automatic its not a straight shot from the headers, you have to get these things called x-tension's (shown in the pic above) but if you get those you can just run regular glass packs after that welded to the x-tensions, but an h-pipe or x-pipe like mentioned above would be good too

 

those are full sized mufflers above, and they have close to 7" clearance!

it takes some fabrication on your part, but they can be made to be used with a 5spd.

 

i have a 700r4 with air shocks and 29 in in the rear so that set up should work out good for me.the one thing that has been bothering me is what kind of headers are those?hedmans i think.it seems like the hooker 2210 hang lower from threads that listed

 

i have the hedman longtube headers. they work REALLY well. i don't understand why more people don't use them. my 305 picked up a few tenths going from shorties to these and my dad is running them on his 11.7x camaro. and it's got a powerglide w/ a lazy 1.82 first gear! if he had a th350, the car would be running 11.2's or better! these headers frickin' WORK!

 

how well did they fit? the only reason I've never done long tubes is because I have always heard and seen them be a pain in the *** to get in...

 

i have the heddman LT on my T-5...i didnt bend the primaries down at all...just wrapped the slave and collector in header wrap (learned that the hard way)...they fit very nice..tuck up under a lot better the hookers

 

the fit is a little tricky at first. the starter has to come out to get the pass. side on and off, but it slides right in. the drivers side needs a small ding in one of the primaries to clear the kmember and there is a small amount of metal that needs to be ground off on the a-arm mount, but it's not much and will not compromize strength. i've had two different sets on two different cars and they both fit the same. it's not hard, and if your have a handheld grinder, it's super easy. just be confident in what your dong.

 

*Stupid Newbie Question*
Why do you need an H/X pipe (and dont answer it frees up hp)? What are the physical reasons? Im not questioning that it should be done, just dont know why..

 

im not 100% sure but it has to do with the frequencies and sound waves generated by each cylinder bank, having a connection between the 2 sides cancells them out or something and you get more power, sorry for the vague description but thats all i can remember when someone told me

 

oh, so, basically, it can be pretty crude tho? As in, if, say, I did a dual 2.5" (or whatever) and i ran it along stock routing, i just neet to connect the two pipes (so the streams are together) together at one point?

 

your best bet may be to get two flowmaster y's and run them, with the y's facing each other, bascially building an x pipe.

 

somewhat off topic, but real quick. mw66nova or anyone else looking to run tranny coolers. go to the junkyard and get on off of a camper or a truck, van or bus. sounds retarded but it works great. all my buddies laughed when they saw the dilapidated camper i got mine from, but i was clean, and it is really big and it keeps my tranny super cool. i am sure that it is not really a GOOD thing to have pipes close to any oil pan, let alone tranny fluid which has a low flashpoint, but look at our stock y pipe routing. GM runs the one pipe right under the oil pan of the engine so i am sure it is just cooking the oil on the bottom of the pan causing it to start evaporiating and breaking down. this is why i used header wrap to wrap my headers and y pipe.

 

i ended up using a small cooler with mine, just spliced it into the stock setup, so now i have two coolers!

also, just fyi about the header wrap: when the headers get wet (from driving in the rain, etc) the header wrap will hold the moisture, causing premature rusting. i've seen some pretty badly rusted through headers. so, if the car is daily driven, you may want to spend the extra cash and get the headers coated instead of using wrap, however, if they car never sees rain, it shouldn't be a problem.

 

On engines like 600 hp and up, an x or H pipe can be detrimental. Especially on nitrous engines that need large exhausts.

 

The short version to X and H pipes...

Delta Pulses are the "frequencies given off by each cylinder". The delta pulses are what pull air out of the cylinder, aka Scavenging. The better that you can keep the delta pulses free-flowing (aka no backpressure... though delta pulses sometimes get confused w/ backpressure) the more scavenging you should have.

a X pipe is for exhausts that are exactly the same length from each cylinder so that the pulses can run freely right through the X.

An H pipe is for those w/o as much time and/or money to do an X pipe. The H pipe still processes the delta pulses between each other, and is a little more forgiving in delta pulses crashing into each other... but still gives you a scavenging effect

That is the JIST of it.