k so anyone using these? says it comes with the Y pipe as well. 49 state legal, no AIR injection, but there is an 02 sensor

im about to buy these for my NON-emissions legal LG4...

gimmie some feed back guys

 

I got em. They're excellent headers, 1 1/2 primaries though which would be small on a wild 350 or mild 400 but just right on almost any 305. I'm really impressed by the quality of these headers.

 

what about fitment? any problems like the SLP's? or anything? i know about the A/C bracket, summit also offers the A/C bracket too for 18$... do i need it?

 

Maybe. I don't have AC. No problems at all with fitment. One of the easiest sets of headers I have ever installed. Just get some better gaskets, because the supplied ones will leak.

 

hey iroc22 what do you run w/ your setup on the 1/4

thanks

 

What about the A/C???

 

Well I run 14.4 @ 98 G Tech time, but that doesn't really count too much. My local track has too many NHRA and Nostalgia events and not enough real test and tune times.

 

nice times i wish my 305 would run like that..........do you think it would be a good idea to rebuild a 305 and put forged pistons, big cam, heads and all little stuff.........all i want to do is to run 13's. do you think thats accomplishible with a 700hr4 w/ racing clutches,s/r torque heads, about 2500 in the motor. See im also looking to supercharger it................i cant decide to get a 350 w/ 300hp or build my 305.

 

You'll get more power out of the 350 for sure. 13's with the 305 is accomplishable with a decent cam and heads, but it would be a lot easier with the 350.

 

alright thanks for the help

 

i would go with 1 5/8" primary headers, but 1.5" primaries wont hurt your stock 305. also i would put 3" exhaust on at the same time

 

ok... i ordered them from summit... 210$ total.. includes the Y pipe.. im just hoping this is not going to be an SLP or Hooker nightmare..

ive done a header swap before on my Full Size Blazer TBI 350.. alot of room in the engine bay though..

 

i tell you what with a mostly stock 305 you can stick with the stock 2/34 i-pipe it will not hurt anything just get a flowmaster with those headers and you will be set
i have the same headers and they are great
just dump your cat and get a flow
the only other car that sounds kinda like mine around me is my friend who has an LG4 84 bird and he has the same setup but he is carb and sounds a bit different
VERY LOUD

 

well i have the dyno-max cat back... and a high flow cat.. so i think im ok in that department.. but thanks for the info..

 

Killjoy,

You can modify your a/c bracket by cutting the back leg off (as you are looking at it installed on the engine) and giving it a nice contour.

I cut a piece of 3/8 I.D. hydralic jack handle about 1 1/2 " long (cut it as long as the stock exhaust manifold is thick) for a spacer and used one of the stock exhaust manifold bolt/studs.

When I installed the left header, I bolted the header up and substituted the spacer and bolt/stud for the front header bolt. Then after I torqued it down, I installed the modified bracket on the stud end and put a nut on it and it has worked perfectly.

I had to re-torque it once.

I also used Percy's aluminumn header gaskets.

 

I don't get itwhat's the deal with modifying the AC?? Why?

 

Jeff is right about the fabrications. The included instructions are breif but explain it all. You can also use pipe from a hardware store for the spacers. DO NOT use the supplied gaskets, they're about as usefull as a 5" tip on a civic. Mine are the ceramic coated ones, here's a pic:

 

Gunny, While in the process of an engine tear down on my '86 T/A I noticed that part of the a/c bracket is mounted out away from the head on a exhaust manifold bolt. Those manifold bolts have to be replaced with header installations it appears, because the header flanges are much thinner. Therefore to retain the spacing for the a/c bracket, one can take note of the distance, and fabricate a spacer to use with that original exhaust manifold bolt when switching to headers

 

Dustin, what kind of headers and y pipe are those.....I like the shine!. Also , will you have to remove those ,then reinstall to get the motor back in?

 

Those are the Ceramic Flowtech headers. Those are the same as what I have on my IROC. It's definitely a lot easier to install engines without the headers on them.

 

iroc22 is correct, they are the flowtech ceramics.

The pic was taken right before my engine was dropped in. I had them on just to make sure they fit and to get a shot of them outside of the engine bay. We didn't have either side on when the engine actually went in.

Don't worry about the fabrication needed to install these guys, it's nothing that you couldn't do with a hacksaw; and the bracket will still work on a stock application.

I got them from nextgen for $369, but chances are you can find them for cheaper now (this was over a year ago).

Here is the reverse pic:

 

My Y pipe was black when I got it. Did you sand it or something?

 

nope, that is what it looked like right out of the box.

 

Oh well, its not a big deal to be painted anyway, since it went like yours in a matter of days.

 

my flowtech's got here last night... looks good.. all pieces were painted black.

quick question... anyone have a part# for better gaskets?? im not going to order them.. i want to find them at like Pep Boys, Auto Zone, Napa, or something..

so.. a part # and brand name please... thanks...



PS should i change the gaskets for the collectors as well? they look cheap too.. anyone have a part# for that also?

 

Dustin Mustangs

Where did you hook up your O2 sensor. Did you buy one of those bung adapter things to weld in?

 

It already comes with an 02 bung and all you have to do is punch it out.

Make sure you change all the gaskets. I dont have the part #'s handy, but I used all Mr.Gasket gaskets and they haven't leaked yet, which is a bonus.

 

Flowtech themselves sell aluminium gaskets that are most likely going to be the best fit, this is what I used (the second time!). Thier website currently has sand in its vag so I couldn't get a direct link, but it does have part #'s listed when working ( http://www.holley.com/HiOctn/ProdLine/FlwTech2.html ). You want the component and accesories link for your gasket PN's, remember these are holley PN's.. Regardless of what brand you decide on, you'll need 3-bolt 2 1/2" collector gaskets and SBC flange gaskets w/round ports.

 

I thought you had to get square port gaskets?

 

No, you need to get 1 1/2" round port header gaskets to match the headers.

 

Any recomendations? I would just buy some but I am not sure if they are 1.5" or not, and they just say SBC round. Also should I get aluminum or copper gaskets or will $15 Mr.Gasket gaskets work fine. I am buying copper collector gaskets ($9) and stage 8 locking bolts ($32). I don't want to skimp on header gaskets either. Oh by the way I did get the flowtech coated headers and y-pipe from year one for like $395 total. That includs shipping and all that other jaz.

 

I run the paper Mr.Gasket round port 1 1/2 gaskets. They have stood up very well. It says on the UPC sticky on the backside what type of gasket they are. I would recommend copper ones over paper, because they dont burn up. The only problem I've had with copper ones is the header bolts loosen up more easy than paper ones. It could just be a problem I have.

 

So any copper gasket with round ports will work ok right? Or do I need to find one that has exactly 1.5" holes.

 

Well I would get ones with 1.5 ports because then there is less of a chance of potential leaks.

 

ok so i finally install the headers and Y pipe.. took me 1.5 days.

its a bitch to get your hands down where they need to be to get the old headers off. i took a "Sawsall" to the air tube, then it was pretty easy.. the only problem i had was the geneous at Flowtech forgot to tap the whole for the 02 sensor.. which i just drilled out..and with the Y pipe. but i solved it in 5 min.. the other problem was on the header flange.. some of the bolt holes were a little rough and small.. i just filed them really quick and problem solved.

now i have a high flow cat, no smog pump, no air tubes.. a dyno-max 2.5 inch cat back with a super turbo muffler...

i started up the car and OH MAN!!! yeah headers kick ***!!!! makes it sound waaaaay awesome around 3000rpm's very tough sounding

i have 1 question.. i did use Mr. Gasket's ... and upon start up.. after 3 min.. and when i shut the car down... they began to smoke a lil bit... was coming from the flange area.. all bolts are tight and snugg... i was just wondering if the gaskets were just breaking in... anyone know? thanks

 

The 02 sensor is blocked off from Flowtech in case you dont want to run one.

The smoke is probably the paint from the Y-pipe or headers. If yours are coated, they still let a little smoke come off of the coating when they first experience some heat.

Tighten up those header bolts again.

 

I have a question. If these headers don't have a smog tube how are they supposed to be emissions legal? And what did you guys do with the smog equipment that attaches to the tubes? I'm trying to find some good headers that will let me run an intact smog system that will actually be blocked off. The emissions check around here consists of the inspector looking to see if everything is intact when you get a new inspection sticker.

 

they dont make headers that have the A.I.R. system.. they only supply the 02 sensor. You might want to buy the Edelbrock ones if you need to have them.

i ditched my emissions because i now have a friend that can hook me up with testing.

 

Quik question guys, Is the outlet on the y-pipe 3 inches?

 

no it is 2.5 and for a mild 305 you dont need more then that

 

Yeah I hear ya but damn it I'm stuck with SLP's being my only option for headers without AIR, with o2 bung and with a 3 inch y-pipe. The price on those is freaking crazy

 

Tell me more about the Flowtech Header.Is the primary pipes size 1 5/8 or 1.5.I have a new 350 in a 84-Z with a 700r tran.These header look good in the pictures but are to small for a 350?Or do thay come in diffrent sizes?The 350 has a Edelbrock intake,Holley 650 carb.Comp cam 262,Accel Dist and some head work.Runing the stock exhust now.Diffrent camaro with 350 in.Had LG4.

 

they are 1.5 primaries. For your motor I would at least go with 1 5/8". You could get by with 1.5" but you would lose a lot of upper end power I would imajine. You would have killer low end though.

 

Many Thirdgen use Hooker 2055.Can you get a Y pipe for those headers?And plan to run 3in all the way out.

 

PN 2055 comes with a Y pipe.

 

I haven taken a ride to the speed shop to see about the Hooker header #2055.But that number is the header and Y pipe?As you know I"m looking for 1 5/8 with 3 in Y.

 

Yes that is the number for headers and y-pipe (1 5/8 and 3 inch Y) but they are not available without AIR.

 

Dose Hooker make header with out air and a Y pipe?Need header with 1 5/8 and 3in Y.350 I have now not doing to good with stock exhaust.

 

PN 2460 has no AIR. But it doesnt come with a Y-pipe and you have to use a reducer with a 02 sensor bung.