LT1-LT4 Modifications 1993-97 Gen II Small Block V8

ls1 heads

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Old Nov 11, 2008 | 02:53 PM
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Default ls1 heads

can i put my friends ls1 heads on my lt1? i am thinking just porting them would be good enough power for me.
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Old Nov 11, 2008 | 02:56 PM
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Originally Posted by rufrntn
can i put my friends ls1 heads on my lt1? i am thinking just porting them would be good enough power for me.
No. Two totally different platforms.
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Old Nov 11, 2008 | 03:08 PM
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No.......
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Old Nov 11, 2008 | 03:10 PM
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let us know how that works out...
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Old Nov 11, 2008 | 03:44 PM
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^^ Nice response.

No, they will not. If you want a nice set of heads look into Lloyd Elliott.
http://www.elliottsportworks.com/lt1.html
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Old Nov 11, 2008 | 03:49 PM
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You can use the I/E valves from the LS1(a little bigger and alot lighter)
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Old Nov 11, 2008 | 04:46 PM
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Originally Posted by BOLO
You can use the I/E valves from the LS1(a little bigger and alot lighter)
Really?
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Old Nov 11, 2008 | 06:12 PM
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Originally Posted by GIZMO
Really?
I talked to lloyd on this awhile back. He said people do, and sometimes it works out great. But new guides are needed because they are smaller stem.
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Old Nov 11, 2008 | 06:26 PM
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Yea, I have heard the Valves are interchangeable as well.

The Heads will not bolt up- different Bolt Pattern, and Rocker Geometry, as well as Coolant Passages.

Some people have been running LS1 Rockers in LT1's..I guess it works out in some cases.
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Old Nov 11, 2008 | 06:26 PM
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Originally Posted by 355z28
But new guides are needed because they are smaller stem.
Bingo!
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Old Nov 11, 2008 | 06:31 PM
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Yes, you can. You'll need to install 8mm guides in your heads and use a LS1 spring kit. I made a thread about it a long time ago:

https://ls1tech.com/forums/lt1-lt4-m...questions.html

I also covered it in my 93 thread:
https://ls1tech.com/forums/10211790-post285.html

Another thing I typed up about this:
http://lsxextreme.com/showthread.php?t=847

I know I typed something else about this, but I can't find it right now.
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Old Nov 11, 2008 | 11:03 PM
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so thats a no on the heads but i can use the lifters? i guess it would be worth it to just get some better after market ones?

i am only asking about the heads because my friend is insisting that he has ls1 heads in his 95 camaro with a lt1 block. he bought the engine already assembled so i guess he got tricked.
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Old Nov 11, 2008 | 11:09 PM
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Originally Posted by rufrntn
i am only asking about the heads because my friend is insisting that he has ls1 heads in his 95 camaro with a lt1 block. he bought the engine already assembled so i guess he got tricked.




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Old Nov 11, 2008 | 11:24 PM
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Originally Posted by the_merv




i think i can cut and paste one for ya. haha
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Old Nov 11, 2008 | 11:32 PM
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maybe someone said alumium heads the same as ls1 talking about what their made of??LOL!
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Old Nov 11, 2008 | 11:37 PM
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Originally Posted by the_merv




lol Yep, I'd HAVE to see an LTS1 engine! If you REALLY want to catch him lying, ask him if he kept the LT1 intake or modded the LS1 intake to fit.s Say it just like that, even though if he had the LS heads, the intake would be the least of your worries. Actually IF he somehow magically managed putting on those heads, then the LT1 intake wouldn't even work THAT is how you'll catch him

To better explain why...
GEN I and II small blocks look like this
Intake.... .[][]..[][].
Exhaust.. []..[][]..[]

GEN III/IV (and most likely for quite a long time to come)
Intake.... [].[].[].[]
Exhaust.. .[].[].[].[]
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Old Nov 12, 2008 | 09:41 AM
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Here's a good pic of a set of LSX Heads for you to see what they look like.
Most are Cathedral Port, these are the L92/LS3 Heads..

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