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

LT1 to LSx head swap...?

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Old Jan 10, 2011 | 01:58 PM
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Default LT1 to LSx head swap...?
I recently purchased a 95 Z28 convertable automatic with an LT1. This is my first late model project, and I don't know much about the LTx and LSx engine series. What if any interchangeability is there between the LT and LS engines? Will LS1 or LS2 heads bolt onto an LT1?
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Old Jan 10, 2011 | 02:00 PM
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Nothing will work besides the lifters
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Old Jan 10, 2011 | 02:23 PM
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There was an article in car craft (i think) a few months back on an aftermarket SBC block that accepts LS heads.
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Old Jan 10, 2011 | 02:24 PM
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AC is correct. However lt1 heads are very good for porting and you can make big power with worked stock castings.
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Old Jan 10, 2011 | 02:24 PM
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Originally Posted by AChotrod
Nothing will work besides the lifters
bingo
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Old Jan 10, 2011 | 02:26 PM
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http://www.worldcastings.com/product...ron-block.html
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Old Jan 10, 2011 | 02:45 PM
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Thats a bit dissapointing. I was really hopeing for more interchange between LTx and LSx engines. What is the difference between the two heads? Bolt pattern? Bore spacing? Overall dimensions?
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Old Jan 10, 2011 | 02:48 PM
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You aint got a enough time or money to make LSx heads work on a LTx. In short, it wont happen.
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Old Jan 10, 2011 | 02:57 PM
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Time and money are not a issue. I will be doing all the work myself. I did a chevy OHV head conversion on my model T speedster engine a couple years ago, that involves cutting the head in half, and a fair bit of machining. Nothing is impossible if you have the time, patcience, and desire...
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Old Jan 10, 2011 | 03:03 PM
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LT is a 5 bolt, LS is a 4 bolt.
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Old Jan 10, 2011 | 03:25 PM
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LS1 head:



LT1 block:



Have fun with that. It's not going to happen, nor is it even worthwhile to put thought into HOW you could do it.
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Old Jan 10, 2011 | 07:12 PM
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Originally Posted by AChotrod
Nothing will work besides the lifters
and rod bearings
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Old Jan 10, 2011 | 07:15 PM
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Power Steering Pump Bolts will work..lmao..


Originally Posted by RamAir95TA
LS1 head:

That's an L92/LS3 Head..

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Old Jan 10, 2011 | 07:18 PM
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Same thing.
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Old Jan 10, 2011 | 07:18 PM
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"Its ok guys I 'modified' them to fit'. ::turns key, ???ummmm uh oh" lol jk man
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Old Jan 10, 2011 | 07:32 PM
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If you want them to fit correctly then modify the K-member into a LS one, and get you some kind of Gen III/IV block..
Originally Posted by RamAir95TA
Same thing.
No..the LS1 is inferior to that one...
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Old Jan 11, 2011 | 08:02 PM
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Originally Posted by RamAir95TA
Same thing.
alrighty then....
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