Formula350

iTrader: (3)

Now, those are for the "82-93 Camaro and 82-92 Firebird" I assume that one, or the other end years is a typo, but it gives me hope.

Basically I'm trying to use all my 92 Firebird parts, on my 93, since I'm poor. I have a bunch of Energy Suspension items that I will be using to the best of my abilities. I have sway bar links, sway bar bushings, panhard bar bushings,
etc etc.

Now, back on topic. I had made a thread about this before, but w/o any pics, and I recently stumbled across this which makes me wonder if I could actually pull this off. Afterall, we were one of the first few to put a 454 in an S10, leaving us to custom make out own headers LOL

Right, so, here are the STOCK headers for LT1 and then TPI.
LT1 LH


TPI LH


LT1 RH


TPI RH (Note: "87 TPI" doesn't matter on that manifold since the headers are 82-92)



Now if you'll notice, they're damn near the same as far as where the bolt holes for the head are, and where the exhaust exits at the flange. The main difference is really the hump in them.

So remember, I'm not looking at direct bolt in, I'm expecting SOME work involved. Do the people here, who have crafted things for their cars, thing it's possible? I wasn't able to find any for 93-97 LT1s for comparison and their LS1 didn't have pics.

Thanks.

My2kz28

iTrader: (1)

What do you mean by finesse? I looks like the header on the left would interfere with the k member...do you have the headers in your possesion? Have you tried to fit them up yet? LT1 headers aren't too expensive (depending on who makes em).

Formula350

iTrader: (3)

I have them, yes. Found that I still had them, they were chilling in the box out in the shed And by fines, possible cutting and re-routing plumbing of the header. Maybe a small bit of flatening to clear an are (like you used to have to do with V8 S-10 headers, and might still have to).

And I'll trade these TPI headers for some LT1 shorties then lol

GrahamHill

iTrader: (6)

The flanges are different. But the bolt orientation is the same between the LT1's and the 1st gen SBC's.

Formula350

iTrader: (3)

Well right, I guess my MAIN question is "Will they clear all the steering and subframe pieces" as to where I can then just modify the exhaust to bolt up to it. I know it'll bolt up and all, it's just fitting in between the body, subframe, etc, that worries me and what I"m questioning about.

I do appreciate ALL feedback. Even if you call me an idiot (which I'm sure Capy will lol)

Formula350

iTrader: (3)

So, no other opinions huh? Surprising...

smoknta

Why dont you sell them, and buy the correct headers. That way you know they will fit.

96ws6ramair

the lt1 has d-shaped ports on the heads the tpi gen 1 sbc head does not have the same port

Bones Z28

iTrader: (8)

unless you are the greatest welder and fabrication expert on the earth, or at least supplied with one hell of a machine shops, i never see those working on an LT1. You will have leaks up the ace, and i mean very bad leaks. Look at the port pattern man. I'm not trying to be jerky, but seriously look at the port pattern. Ones a D shape (lt1s) the others an oval. If it was an easy fab you know more guys would just throw on old school headers.

Do yourself a favor. Sell those headers, scrunge together the difference for LT1 headers and save yourself some major headaches. You'll be glad you did, because just installing headers on an LT1 is enough of a headache, why make it more complicated. Object of the game is to have the least amount of headaches possible.

Formula350

iTrader: (3)

That makes plenty of sense, but isn't a D just an O with part slashed off? I'd assume they'd match up still, just the header wouldn't be fully used at the port end.

As far as selling them. I'd never get enough to come close to buying some shorty LT1 headers I could probably only get $80-90 or so for these, since new they're $110, and I have flange hardware in it. I don't know what LT1 ones cost, but I assume into the $200 range.

Javier97Z28

iTrader: (1)

People sell used junky shorties all the time for $100 or so on the boards.. keep an eye out.

1bdbrd

iTrader: (12)

Let me guess, they are Flowtech headers correct? As hard as it is to put headers in these cars, why would you want to go with anything less than long tubes or mid lengths at the least? Make your life easier, get the correct part for the car.

Formula350

iTrader: (3)

Yea, those are Flowtech, but hey Holley makes em I got them when I worked for a parts store when I owned my 91, with the intent to install. So, needless to say, I got a deal on them.

Why not LTs? Just not what I want. Mids, maybe.

I'm just looking for a bit more flow than what is currently offered from the manifolds. I don't have anything that'd take advantage of LTs, nor will I in any near future. And the price, is what all turns me off.

vtec

iTrader: (1)

they wont leak. im running hooker 3rd gen headers on my LT1. no problems. (non-d port)

another thing, shorties are more of a pain in the *** than longtubes when it comes time to change plugs and stuff like that.

Formula350

iTrader: (3)

Well that's good to hear. And they're not equal length shorties, so it's not an Octopus fist for headers. They are the exact pictured above.

We'll see. I'll give it a look over with them out of the box and the hood popped.

1bdbrd

iTrader: (12)

Remember something, those flow worse than stock TPI manifolds. They have 1 1/2 primaries and 2 inch collectors. Not worth the time or money involved in installing them.

Rowdy94

iTrader: (13)

Formula, you're going to give me nightmares looking at those things.

Formula350

iTrader: (3)

I have a hard time believing that they flow worse than a stock TPI manifold. Those, while they work, are quite a flow bottleneck if you ask me.

1bdbrd

iTrader: (12)

Right but given the size and design, they just don't work. There have been people on TGO that lost power going to flowtechs because of this. And a couple were on stock engines.