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LS7 Parts on LS1

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Old 01-24-2009, 12:55 AM
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Default LS7 Parts on LS1

I have tried a search but am not finding anything... Will an LS7 oil pan with dry sump and LS7 heads bolt up to the LS1 w/o any problems, and what is the casting number for the LS7 Heads. Thanks.
Old 01-24-2009, 02:59 AM
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I don't know about the pan.... but I know the heads won't work because the bore on the LS1 is too small.
Old 01-24-2009, 04:25 AM
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If I were to stroke the motor that issue would be taken care of correct? And once those were on (if they can be put on) then an LS6 intake manifold should bolt on w/o any problems as well right?
Old 01-24-2009, 08:58 AM
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he said bore... not stroke... heads wont work because they won't seal. think of a huge lid on a pot when you are cooking. My other guess is that LS6 runners are small in comparison to the intake runners on the LS7 heads. Short answer, NO.
Old 01-24-2009, 10:41 AM
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The LS7 Heads will only work with the LS7 Intake due to the Intake Bolt pattern, and they are NOT Cathedral Port Heads.

That and you need atleast a 4.100 Bore(I believe) to run a LS7 Head due to the Valves.
Old 01-24-2009, 12:24 PM
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OK, well this is where my understanding of the dialogue is slightly below par... So, when you say I need at least a 4.100 bore, you are saying that in order for the valves in the cylinder head to clear the block, each cylinder diameter needs to be increased to at least a 4.100 (if thats the minimum), then it will seal correctly as well right? Then what is the meaning of "stroking a motor". Thanks for the help, just trying to learn.
Old 01-24-2009, 12:32 PM
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Yea, bore will have to be 4.100", which with a stock LS1 Block will not happen unless you re-sleeve it.

Stroking is increasing the Stroke of the Engine..basically a bigger Crank. I have a Stroker Engine in my Car, took a 6.0l Block and put a 4.000" Stroker Crank in it with the right Rods and Pistons. That took it from 364ci to 402ci. I left the Bore a stock 4.000" Bore, but even there I have room to grow when I Bore it.
Old 01-24-2009, 01:40 PM
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So in order to increase the the ci, Lets say I bought a stroker kit from TSP for my LS1... Just by increasing the stroke length I can increase the ci right? I wouldnt have to bore the block unless the kit required a larger bore, which in turn would increase the ci even more than just stroking the motor... Then I would have to obtain heads that would match the diameter of the cylinder in order to properly seal right?
Old 01-24-2009, 02:08 PM
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Yea, the increased Stroke length will increase CI's, as well as an increase in Bore. You can use any head you want with that LS1 except for L92/LS3's and LS7's.
Old 01-24-2009, 02:12 PM
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Excellent, thanks for the info merv, I appreciate it
Old 01-24-2009, 02:20 PM
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Now thats that outta the way, doeas anyone know if the LS7 pan will work on the LS1??
Old 01-24-2009, 02:51 PM
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I don't see why it wouldn't, but I know that for it to effectively work you would need the LS7 Oil Pump and build a Dry-Sump System.
Old 01-24-2009, 03:05 PM
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Originally Posted by the_merv
I don't see why it wouldn't, but I know that for it to effectively work you would need the LS7 Oil Pump and build a Dry-Sump System.
Correct... That was the plan.




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