vettefast

I am currently having my L98 being built into a 383 stroker and I want to put new headers on since the engine will be out. Which aftermarket headers are the best fit for this engine without causing any problems! Thanks
:confused:

1MoorTym

What heads are you using?

Certain brands of headers have issues with straight or non-L98 angle plugs.

I used hookers on the stock heads and they fit great.

vettefast

Were they shorties or full headers! :)

1MoorTym

Hooker long tubes. Its actually easier to change plugs now and theres no spark plug boot clearance issues.

vader86

Hookers seem to be the brand with the least # of complaints, I can barely remember someone who complained about fitment.

2149 if you want the AIR/Smog/O2 fittings, 2151 if you dont but youll have to have an O2 bung welded into the 2151s.

I think the Hooker Y-pipe # is 16720, I do remember people complaining about its fitment though.

TheStef

Sorry.. Vader already answered my question


[Modified by TheStef, 3:11 PM 12/18/2003]

shotchkiss

Hooker 2149s fit fine, their Y-pipe was awful for me at least.

Vic'89

I am using the Hooker 2149's and they are a very nice header.

The fit is good, spark plug clearance is good, they have collectors that bolt to a Ypipe, and the coating is good.

Vic



[Modified by Vic'89, 5:17 PM 12/18/2003]

devilfish

hmmm has many got trouble with the Hooker Y-pipe and the 2151s?
Im about to order them togheter...

Trog

I have the TPIS long tubes w/ matching 3" Y. Headers fit nice, use stock bolts & have never loosened on me like regular header bolts. Has smog fittings, air & EGR but you have to fit an EGR tube from a camero or something like that. TPIS gives you a part #. I used all the smog cr#p until the last rebuild, now capped off & works great. I am NOT using a heated O2 sensor but will be doing some testing soon to see how well the stock one is reading. Y pipe is a slip fit & can be a bit#h to install over the coated headers. Some light sanding on the header & grinding inside the Y this last time made for a quick & easy install. No other clearance problems at all. A bit expensive but I would say you get what you pay for.

TheStef

I can see on the TPIS web site that their C4 header setup comes with the 3 inch Y pipe.

I just have 1 question, doe the 3 inch Y pipe fit on the stock cat? and if not, then I'm guessing you got a high flow cat? or not cat at all? and what about the cat back exaust system, is it a good idea to keep the 2.25 inch cat back exausth? or go with a 3 inch?

SBNova

I dont mean to hijack this thread, but what about ground clearance? Does anyone have their car lowered with headers? Anyone have a part number for the shorties?

BILLYD

Anyone have these Hookers on a roadster? I remember a thread where some headers hit the X-brace under the car.
thanks
Bill

Trog

ground clearance is NOT a problem, they tuck up nicely into stock area. I am still using the stock converter. Would like to go to a high flow but just haven't yet. I had to have the clamp dent pushed out by a muffler shop, to install onto the new Y. Not easy up here as no one had a big enough bender for that size pipe. Finally found a guy that knew his equipment & how to "cheat" it. I have the power effects cat back & it flows pretty good too. I also just installed a roadster X-brace & had to notch it just a little bit on drivers side but only because the pipe is in a diff. place from where the stock notch was.

Heres an old pic (pre x-brace) note you can see the headers are only a little below the oil pan level.




[Modified by Trog, 12:46 AM 12/19/2003]

86PACER

:yesnod: OH yeah! My vette is an 86 l98 auto. I have the 2151's with the 16720 hooker y-pipe. Headers fit beautifully. The y-pipe however....... :mad
It came no where near clearing the trans pan on one side. I had to cut the corner section off and weld a better one to make it clear the trans pan. :thumbs:

86PACER

I have the 2151's on my 86. About same ground clearance as the stock system. No ground clearance problems here. :D

86PACER

:iagree: :D

86PACER

I had problems with the 16720 Hooker y-pipe too. Did you also experience the same trans pan clearance problem on one side as I did? If so how did you solve it? :thumbs: :D

Dale1990

I've got the Hooker 2149s on my 90 vert and they fit fine with no X-brace or clearance probs. Installing was a PITA but no more than expected. Had to make the dimples for the bolts bigger. The hooker Y-pipe didn't fit quite right because they had to stamp part of the pipe for those w/ auto trannies. It would be nice if they sold two different types so those with ZF6s don't have to mess around. Changing plugs is a little easier than stock.

My Dad's 86 has LPE headers on it and they suck. Changing plugs is a real challenge (worse than stock) - takes about 2x as long as on the 90. I don't know how many wires have melted - there is no way to reliably keep the wires away from the headers. Plus any coating on them has long since rusted away( <10K miles).

Food for thought.

Dale

TheStef

hmmm so you have to remove the X brace from you Convertible?? hmmm I'm not sure I'd be willing to do that.

would they still fit with the X brace in place, if so would any modification be required?