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Discussion Starter · #1 ·
Okay, so I just bought a 96 z28 about 6 months ago, and it obviously wasnt running right. I threw a rod in the 383 I had in it. So I go buy a used "Lt1" out of a "97 Camaro". well I've done EVERYTHING to this project that you can think of. i get all the was down to putting the headers on....those of you that have actually done an engine swap know how much work has been done so far...and know how CLOSE YOU ARE!!! LOL
Well, my Camaro had Hooker Headers, and lt4 heads on the previous engine, well this new engine has steel heads....yep. just found out its not out of a Camaro. ( They come with alum. heads...) :craz28:
So i've been shopping around for some headers and i find a pair that are decently cheap and in stock on Ebay....but it says they fit 71-94 Impala's...
wtf.
i've read a few articles....one on this site says that the only issues to putting them on the 94-96 impala engines is the ac lines. mine are disconnected. all i need to know is if they fit my damn heads. anyone know...???sorry for the long explanation.
 

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Discussion Starter · #5 ·
nah they dont, i actually went and bought a set of headers from a guy that said they fit all "stock" t1's bc my engine was a 383 with lt4 heads...and they didnt fit.
From what i've seen so far, lt1's went in more than just the f bodies. they have the b bodies (impala and caprice) and y bodies, etc. but only the f bodies got aluminum heads.
the rest got steel heads. the aluminum heads have a more ported header flange, and the steel heads have a wider bolt pattern for the header bolts.
 

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1. All LT1/4 engines have the same manifold (header) bolt patterns. Your headers from your previous engine will fit the new engine. And IMO, the headers you bought (for Impalas/Caprices) will NOT fit your current CAR because it ain't an Impala/Caprice!

2. L99 = 4.3L V8 engine......AKA the "Baby LT1"

3. Does your new engine have the number "327" cast into the block?

4. Why aren't you using the LT4 Heads from your previous engine on the new engine?

Just sayin'......

KW
 

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Discussion Starter · #9 ·
It does have 327 cast into the side of the block. Funny Story about that one too...sold the heads to one of my brother in laws friends for cheap who's dad owns a machine shop. bc he said he "needed them terribly" for his 97 trans am. seen them on craigslist the next day for twice what i sold them for. -.-
 

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Discussion Starter · #12 ·
LOL Murphy's for sure. So, do you know what vehicles the 327's went in?
and how the hell all of the lt subcomponents could bolt on to it....?
 

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.....From what i've seen so far, lt1's went in more than just the f bodies. they have the b bodies (impala and caprice) and y bodies, etc. but only the f bodies got aluminum heads.
the rest got steel heads......
No.

All LT1's in F & Y-bodies got aluminum heads.

B & D-Bodies (Impalas, Caprices, Roadmasters and Fleetwoods) all got iron heads.

No steel heads :no: .......

KW
 

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LOL Murphy's for sure. So, do you know what vehicles the 327's went in......
Engines with the '327' casted in them are LT1's.

The '327' are the last 3 digits in the part number of the block.

Has nothing to do with cubic inches, etc....

And see previous post ;) .

KW
 

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Discussion Starter · #15 ·
Ok, then firstly...they are NOT aluminum heads. so they must be iron heads. Secondly, if it says 327 on the block, it's an L99??? Finally, what f**king car could this engine have possibly come out of so I can buy some long tubes to get it running?!?!?!?!
 

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Ok, then firstly...they are NOT aluminum heads. so they must be iron heads. Secondly, if it says 327 on the block, it's an L99??? Finally, what f**king car could this engine have possibly come out of so I can buy some long tubes to get it running?!?!?!?!
1. As stated above.....if it has '327' on the block.....it's a LT1.

2. Get headers that will fit YOUR CAR. If they fit a LT1 F-body, it doesn't matter whether the engine has aluminum or iron heads, the headers will fit. Same engine, ect.

KW
 

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Discussion Starter · #17 ·
Man all I know is all the sub components (i.e. distributor, cooling system, etc.) bolt onto this engine. It has to be an lt1. The head difference is one of the few differences among them. so if half of them came with iron heads, they all probably came with the same head. chevy's a pretty universal supplier. so any of those few select cars that have iron heads should have interchangable headers. i removed my ac system. so clearance isnt a problem. i need a header that will bolt on to this bitch so i can drive it. that's all i have left.
 

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Discussion Starter · #18 ·
I have 2 different sets of "lt1 headers" neither fit it. the only exhaust that i have that fits it is the stock header manifolds. it HAS TO BE an lt1 or all the subcomponents wouldnt fit..... they are NOT the same. i guarantee you if you go find a 94-96 chevy impala ss, i will sent you a pair of hooker headers or pacesetter headers with cutouts that WILL fit a 93-97 f body, and they WONT bolt into your heads. i guarantee it. i know you're very knowledgable about these cars, but they will not fit.
 

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Man all I know is all the sub components (i.e. distributor, cooling system, etc.) bolt onto this engine. It has to be an lt1........
Um......I just told you it was a LT1 :poke:......

Get a set of headers that fit your car and be done with it :lol: .

KW
 

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.......i guarantee you if you go find a 94-96 chevy impala ss, i will sent you a pair of hooker headers or pacesetter headers with cutouts that WILL fit a 93-97 f body, and they WONT bolt into your heads. i guarantee it........
And I guarantee that you are wrong.

They will bolt to the engine if it's on a stand.....but they won't fit into the engine bay.

Been there.....done that.

I'm out! Someone else, try to help this guy.....

KW
 
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