What is a good but less expensive set of headers to put on a 91 Z28.What kind of horsepower gain would i get and would it cut any time off 0-60 time.How hard are they to put on and is it worth it

 

Look at Hedman or Hooker 1-5/8" shorties. Can't remember the part numbers right now, but they are a good price and pretty nice quality stuff. I have the Hedman 1-5/8" headers, and they are really nice.

 

A good set of headers is deffinetly worth the money, and in my opinion you get what you pay for. I put SLP's on mine a couple months ago and pulleys and gained over .3 and 3mph, not to mention a better sound. If you cant afford SLP, then hedmans should also work well, i havent heard alot of great things about the edelbrocks.Plan to spend a good weekend on putting them on, but its not that bad.

 

A good weekend installing headers....lol.....took me around 2 hrs tops. I used the Hooker Super Comp Shorties ( part #2055) They are 1and 5/8 and came with a really nice y-pipe. Although my install was really easy because i had already removed the pollution junk and A.I.R tubes. I would really recommend this set for any thirdgenner. Summit sells the setup for around 360.00+ shipping. Feel free to ask me any questions about the install.

 

thanks for all the help.Im sure ill need more

 

Cheap and headers don't go together. Anyone who has flowtechs or dynomax headers knows exaclty what i am talking about. It is not worth the hassle, problems, poor quality, time, effort, or busted knuckles to go with any cheap header. Go with the Hooker 2055's ($350) and be done with it.

 

Another good opinion...Hooker Super Comp Shorty's

 

thanks for the info ill go with hooker

 

any ?'s on install, just let me know...be glad to assist.

 

I got the flowtechs, because i am a poor person, lol. I dont think there is a problem with performance, they just fit like total crap. They were a bitch to bolt to the engine, on the stand! Then when in the car, both sides header flange hits the frame rail. Talk about a PIA to install the y-pipe. Next time it will be SLP's for me, they seem to fit very well.

 

I feel your pain man. Although my fitment was awesome the quality was nothing short of high school shop class. Every flange was bent and I could only seal them with Percy's dead soft gaskets. These gaskets are miracle workers. Anywhoo, the collectors to this day leak even with $30 in high tech fancy collector gaskets stuffed inbetween. Here is a pick of 2 hour old flowtech flanges. Note the bent bolts and flange.

 

I didnt have any problems with the collectors, but all of the welds were sloppy. I probably could have done as well with the 110v wire welder. But, they work for the time being. Probably the worst part IMO was the flange that bolts to the block, it seemed to be warped, it was a struggle to get them bolted on, for my sake I hope they never have to come off and be put back on while in the car.

 

I can also contribute to the flowtechs being impossible to seal. I have installed them three times, used aluminium gaskets twice and they still leak. When I first tried to reinstall them I was (somewhat) shocked to see the included paper gaskets leaking everywhere, literally. Every primary, and both collectors where leakers (these were all still torqued mind you). My crossover tube also needed clearenceing to get past the k-membe right behind the oil pan, although this could have been the falut of the num-nuts I had install them.

 

I forgot to mention the crappy welds. I am glad you did. Just like yours my head flange was really warped. I mean, when I had one bolt in the flange was .5" off the surface of the head on the other side. Thank *** for percy's dead soft gaskets that can fill in such a void.

 

I know Im going to get hissed out of here, but if you're thinking economy and having the absolute best isn't your most important concern, then you may want to think about the edelbrocks. Easy install, they come with EVERYTHING you need (gaskets, y pipe, bolts, everything) they are cheap, especially considering, like i said, they come with everything you could need, and last but not least, you will def. notice a performance gain, im sure its not as much as a nice set of slps or hedman ect. but it's def. there.

 

I got 20hp at the rear with Edelbrock TES and a high flow cat. Mods before this were Edelbrock performer intake and carb, Hooker catback 3", open air elelment with KN. This is on a 87 LG4.

However the Edelbrock y pipe I just measured it and was either 2" or 2 1/4" which kinda sucks, plus like a true idiot I'm running a 2 1/2" cat. So basically I got somewhat of a bottleneck before the catback, but not as bad as stock.

 

Cheap isnt always the best route.....You get what you pay for! :lala:

 

I thought I was pretty clear on what I said about the TES's. I said they might be something to think about if youre on a budget and having the best isn't an issue. I've had mine for almost two years now and considering what I paid for them and what you get when you buy them, Im more than happy with them. Im well aware that there are MUCH better headers out there, but these will still give you a kick in the pants.

 

what did u pay for the setup?

 

what are the options/ opinions for long tubes, i'm lookin into building a stroker motor, and how big will depend on how much air i can move.

 

ok i bought a set of dynomax black jack shorty headers off a friend they are brand new and i got them for a $100 i know they retail for something like $160 but will it be worth it will they give me a good kick see i am a very poor person most of the parts on my car are home made fabs i made my self although i don't have much money i am somewhat talented to that aspect.
when i install these headers i plan on running true duels all the way back will these headers be fine for that?

any help or experiance with these headers would be nice

thanks
mcwille

 

As long as you dont have emissions or a visual check rather(cause i dont think they have air), any header is better than stock manifolds, and no one can argue with that. You may need to weld on a bung for the O2 sensor with those also.

 

First off, sorry not to hi-jack your thread but what about the headers that Summit sells in their catalog? Does anyone have any info about them, because they're around $75 bucks plus shipping.

 

From what I have been told, and have seen, they seem to be nothing more than flowtechs. If you read my post above you will get a good evaluation of them.

 

this all sounds like more praise to the 2055s. I think ill have to go with them finally. Any installation quirks about them that i should know

 

Borlas are nice if you feel like paying for them. You can find a good deal on ebay sometimes.

 

Borla only makes mufflers and a cat-back for our cars and not headers.

 

lol, i got edelbrocks comin for my 91 Z28. I herd good things about them (ppl who own them)

 

Really, that sucks.
They didnt really help my truck out, but was going to get a pair for the camaro anyway. Not anymore I guess.

 

i've got a set of the hedman shorties and y-pipe. fit pretty decently. on a budget, they were nice enough.

 

Going to replace the exhaust on my 91 Z28 L98 700r4 and it has dual cats...if I install headers or just replace the exhaust from the manifolds back 1) does the y pipe go into 1 3" pipe to the cat or 2 like stock and 2) (not wanting to buy 2 cats if I don't have to) will 1 3" cat with a single 3" system (y pipe to muffler) flow as good as the dual cat system?
Doesn't really say or show this in the ads for the pipes. TIA

Time to get it off the jack stands ( been there for like 3 or 4 years now) and feed it a couple of Mustangs

PS This site is great....where have I been all this time

 

As long as its legal (if you care) and there are no issues with the hangers, i don't see why you couldn't do that... get headers with a ypipe and connect the y directly to the cat like in single cat applications and then get a single cat cat back exhaust.

Also, if you compare single cat to dual cat STOCK exhausts the dual cat gives you 5 hp more, IIRC. However, if you get any AFTERMARKET headers/ypipe/single cat setup, it is going to blow away a dual cat stock setup.

 

hooker 2460s and a custom y pipe worked great for me

 

I was wondering if there are any headers of good quality that comply with the California smog regulations.

 

I belive the SLP headers are smog legal as well as the hooker 2055s

 

Thanks for the help. I'll look into those.

 

I got a pair of Hooker Competition (not SUPER Competition) shorties for my 91Z for only $150. They are just black coated though. I think Summit has them for around this price too.

 

the supercomps are 1 5/8, and the slp's are 1 3/4. does that really make a huge difference. Somewhere on another post in here, someone told me that 1 5/8 wasn't too good..that i should go w/ some slp 1 3/4. I plan on doing cam, intake, heads and stuff so i didn't think 1 5/8 would be so much smaller that it would make a huge power make a huge flow difference. Nebody know if this is true or not?

thanks

 

you can check around and youll find some more info. For the most part, 1 5/8 is good for applications with less than 450hp. Once your pushing 400+ you want to start considering something bigger like 1 3/4 because your exhaust would actually be a restriction. Now some have diff opinions and ive seen some 4th gens with only 1 5/8 headers pushing 500+ hp. if youve got a 305 then your perfectly fine with 1 5/8. if youve got a heavily modified 350/383 and up then consider 1 3/4.

 

how are you liking the 2460s I just but a set for my car and have not installed yet, how do they sound and how was the fit up

 

fit was great, sounds sweet with the gale banks catback and high flow cat i put on at the same time. quality was excellent.

 

thanks for the good reply firebirdpl

 

no prob max let me know how the install goes im sure you wont regret it

 

Camaro4free i have the 50 state legal edelbrock headers and they made a huge difference in performance and sound, also the car passed with those and a 3 inch exhaust 3in high flow cat and new muffler. In fact the car ran cleaner then my friends 99 stock civic with same amount of miles as my car

 

T56 in 3 weeks puting syncroes in it this weekend,getting spec clutch repaired,headers hopefully thanksgiving day weekend PRICELESS