z91bowtie1

I took my car 91 z28 (which has an lt1) to get exhaust hooked up and the guy tried fabing up the flangs to fit the y pipe and he could not do them. so now i got to either find a 4th gen y pipe or headers. i'm not sure but i seen a posting on a swap with some heddermans that will fit in my 91. i called jegs and the guy told me they had a set Part #68419 for 159 and some change. when i got home from work i called again and this other guy tells me they don't have them. does any body have the part number on the headers that they used them for there swap? do not have to be ceramic thanks

TexasLT1

ANY thirdgen header will work. 4th gen headers won't even fit in the car. Just get any system you want thats designed for a 3rd gen.

z91bowtie1

hey texas do you have headers on yours? what about the clearence on the drivers side steering? doesn't the lt1 have d shape ports?

TexasLT1

I'm running Hedman 1-5/8" shorties. Steering clearance is fine, no problems. LT1's are D-port, so with 1-5/8" primaries you're going to get a little bit of shrouding, but nothing a little grinding can't fix.

z91bowtie1

texaslt1 i ordered the hedmen headers i should get them in a couple of days. i took my stock headers off and on the passenger side there is a metal line that goes from the exhuast to the back of the intake did you have this on yours? and did you block it off. and if you did where did you get the plate to block it. i believe its the egr line.

TexasLT1

I blocked it off and had EGR turned off in the PCM.

z91bowtie1

well got the headers on the passenger side is tight. texaslt1 did your headers come with o2 sensor fittings? mine did not. do you have your o2 sensors hooked up on yours? i know i'm going to need them. also i bought a power steering hose (peresser side) cause the two i had it connected with fitting blow off. thirim had a post about a power steering line that came off a 95 impala that worked but the one i got doesn't any help on this also.

TexasLT1

Yes, you will need to get the bungs for O2 sensors. Sorry I didn't mention it before.

For powersteering, how did the hose you got not fit? Ive talked to a number of people that used the B-Body (Impalla/Caprice/Buick) hose and they said it fit, but it might require a little bending to get it to line up with the steering box. For mine, I ended up getting a hydraulic line made and used hydraulic fittings with part of the original line to connect to the steering box.

Thirim

proably a little late for ya bud, but i put on PN 68479 hedman's .. I would not reccomend them for a couple reasons.

1. comes within 1/4" of the heater box, (im waiting for mine to melt.)
2. they stick a way out from the block and begin to interfere with the brake lines, although using a prybar, you can tweak the lines out of the way. still close though.
3. The Y pipe is no better then the stocker. I actually returned the y pipe and cut the stock one and made it work, it is a bit heavier, looks like stainless and cost me notta,freebie, nothing..
I had to cut off the 2 stand up primaries on the y pipe, cut em up to size, took the the pass side primary and moved it about 1inch further down the pipe and turned it a little, cut off the lip of the 3" collector which came with the headers and welded it on the primaries of the y pipe, and via 2 people positioned it, tacked it, welded it off the car, and filled in all the holes with spare pieces and weld .. turned out very well. Damn I hav eto get a camera, 2hrs of work with 2 people.

I am just not pleased with the way these headers fit in the car. It is made for the car, even has the d shaped ports, but is still for a 82-92..

my 2 cents.. let us know how they fit. I probably made it sound worse then it really is..

Thirim

I had a muffler shop put my O2 sensors in for me when they bent me up a piece of pipe to replace the cat converter.. The did it with the headers on the car, np .. and they look great. all they did was blow holes in the headers with the torch, put bings in, weld em up, put O2 sensors in.. so I wouldn't be too concerned about the O2, can drive car to shop to get them to do that.
I will try to get a pic of my power steering hose for ya. and a few more if you have requests., see if i can do that later today or tomorrow. if I can borrow a camera.

Trans Am#5

I used a 1994 Corvette steering hose without any problems.

Also, I am using Hooker Competition headers with A.I.R. and I had a local shop custom make a y-pipe for me. I also had to have a bung welded on. The only theng I should have done differently is to not get the A.I.R. since I blocked off the EGR anyway. It would have looked much cleaner. I am actually going to eliminate the tubes this winter when the motor comes out for some 'maintenance '.

z91bowtie1

thanks guys. Did you guys block both egr valve and egr feed pipe or just the pipe and can i buy a block off plate for them or do i have to have them made? yes i did get 68479 hedmen. the drivers side is no prob. the pass was tight but its in. i haven't bolted it down yet i'm going to have to move the heater hard line. did you guys remove the emmisions silver tube that wraps around pass to drivers side? cause its in the way. the power steering line has about 4 bends where it connects to power steering pump. i'll get under ther in a few and find out for sure. will let you know whats up

Thirim

check my pictures on a seperate post.. if you want more lemmie know..

I don't need emissions for pre 91 vehicles, so I removed everything. to block off the egr, I had the engine out.. but you can use a gasket as at template.. and cut something a hair bigger out of Aluninum.. then use the nuts and some silicon and bingo.. easy... pics of that in my other post..

if you have to pay for O2 bungs.. you can use 18mmx1.25 pitch nuts.. I aquired bungs via my buddy at muffler shop.. otherwise i was going nuts..

z91bowtie1

thanks what is the post your talking about?

TexasLT1

Like I said in his post, you don't need to worry about anything on the passenger side. I've had my hedmans in for almost 4 years now and have had 0 problems with the heater line or anything over there.

z91bowtie1

i was just reading that thanks. can any one hook me up with the program for the pcm programing?

Thirim

yeah, i've been driving around for about 2wks, no melting yet.. .. can't go far, gas is $1.03.9 /litre and thats with th elocal $.03 off on thurs deal

btw, what shoud I expect for gas milege?

TexasLT1

I get anywhere from 12-18 around town (depending on driving style ) and around 25 on the highway

z91bowtie1

Trans Am#5
thanks for the info on the pcm:hail:

Trans Am#5

You're welcome!!!

cd90rs

I just got the Hedman 68479's and matching Y-pipe myself.

z91bowtie1

cd90rs where did you get the fuel lines? i just got rubber fuel line hose with clamps holding them. need something better. they don't need to be braided. thanks

Trans Am#5

http://www.lt1intake.com/services.htm

This is where mine are from and seem to be a popular choice.

Thirim

where is everyone getting the breather hoses? i need the hose from MAF to the intake and a custom length from MAF to filter

z91bowtie1

are you talking about this set up?

Trans Am#5

The one pictured above will only work with a Camaro. The Firebird hood comes down on an angle more and you would not be able to close the hood with that particular setup.

cd90rs

I bought the fuel rail adapters and hose from http://www.purechoicemotorsports.com/ . I think I had around $100-120 in them.

Thirim

i was wanting to come out of the engine and 90deg to the pass side. then maf and then to the fender, or even further, inside the fender and down to the bottom of car with one of those ram air boxes fabbed up.

the setup I have now, has a snorkel type thingie, hanging off the bottom of the 90deg elbow.. not sure what it does, i suppose for noise.. anyway, i cut it off and was going to fab up something to block the hole.. but if i could just buy one without that thing i'd be better off.

z91bowtie1

sorry thirim thought you had a camaro i see you have a gta