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

ls1 heads on a lt1

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Old 10-03-2011, 09:43 PM
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Default ls1 heads on a lt1
Can you do it? If so are there any gains? I have my 853s and my brother in law has a lt1, I was going to give them to him if it works....
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Old 10-03-2011, 09:44 PM
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No, they will not work. Smallblock chevy heads will work on an LT1 with modifications though.
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Old 10-03-2011, 09:44 PM
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some JB weld will do wonders
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Old 10-03-2011, 10:03 PM
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Yeah as stated you will need JB Weld to attach them, other than that you shouldn't have any issues
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Old 10-03-2011, 10:07 PM
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Use the JB Weld to install the VTEC too.
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Old 10-03-2011, 10:07 PM
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They will work just fine. Everyone is doing it!
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Old 10-03-2011, 10:20 PM
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Don't they have cathedral ports?
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Old 10-03-2011, 10:26 PM
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I was totally joking. So were the people talking about JB weld (I hope). Hopefully these little jokes do not contribute to misinformation.
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Old 10-03-2011, 10:37 PM
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Please do your homework...
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Old 10-03-2011, 11:01 PM
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The lightweight LS1 valves will be the only parts that can be swapped onto the LT1 heads.
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Old 10-04-2011, 01:04 AM
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Only way it will work is to use pre-LS1 heads.
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Old 10-04-2011, 04:13 PM
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Originally Posted by lt1-xjs
Please do your homework...
Isn't that what I'm doing? I did a search and didnt find anything. I'll just go with super glue. thanks guys!
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Old 10-04-2011, 04:59 PM
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The bolt patterns and bores are different..nothing will match up

And the LT1 is reverse flow, LS1 isnt.
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Old 10-04-2011, 05:59 PM
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Originally Posted by 00silverGTP
I'll just go with super glue. thanks guys!
Good to hear!!!!!!!!! **** those JB nut swingers!!!!!!!!!!
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Old 10-04-2011, 06:04 PM
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Originally Posted by AChotrod
Good to hear!!!!!!!!! **** those JB nut swingers!!!!!!!!!!
Dude STFU I have personally installed LS1 heads on LT1s on several occasions and I have used JB Weld with no issues on every install except one, used two part epoxy and the heads lifted after 100 miles so I call
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Old 10-04-2011, 06:34 PM
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on a serious note.. the only SBC block you CAN put LS1 heads on is this one:

http://www.worldcastings.com/product...ron-block.html

plan on spending 3k for that privilege.
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Old 10-04-2011, 07:42 PM
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Originally Posted by merim123
on a serious note.. the only SBC block you CAN put LS1 heads on is this one:

http://www.worldcastings.com/product...ron-block.html

plan on spending 3k for that privilege.
Badass.
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Old 10-04-2011, 07:51 PM
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Originally Posted by Formula413
Dude STFU I have personally installed LS1 heads on LT1s on several occasions and I have used JB Weld with no issues on every install except one, used two part epoxy and the heads lifted after 100 miles so I call
Ill bet you forgot the duct tape on that one. YOU ALWAYS NEED DUCT TAPE!!!
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Old 10-04-2011, 07:54 PM
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dang I'm glad that I didn't ask about the new snot gaskets LOL
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Old 10-04-2011, 07:56 PM
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****! I forgot the Damn duct tape!!!!
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