L76 intake/L92 head questions
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From: Bowling Green, KY
L76 intake/L92 head questions Well guys I'm coming close to finally getting heads and an intake. I've settled on the L76/L92 combo but I have a few simple questions...
1.)Do the L92s bolt up to the LS1?
2.)Why are they so freakin cheap? (Part #12582714 @ SDPC $175 bare {I'm not sure if this is for a pair or one, assuming one}). I've always assumed great performance equaled high price, but if everything I've read is true, these unported heads flow 300 cfm...
3.)What all can I use from my 241 casting heads (Springs, retainers, etc.)?
4.)Will a NW 90mm throttle body bolt right up to the L76 intake?
Thanks,
Alex
1.)Do the L92s bolt up to the LS1?
2.)Why are they so freakin cheap? (Part #12582714 @ SDPC $175 bare {I'm not sure if this is for a pair or one, assuming one}). I've always assumed great performance equaled high price, but if everything I've read is true, these unported heads flow 300 cfm...
3.)What all can I use from my 241 casting heads (Springs, retainers, etc.)?
4.)Will a NW 90mm throttle body bolt right up to the L76 intake?
Thanks,
Alex
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Joined: Apr 2006
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From: Naperville, IL
Originally Posted by PowerShift408
Well guys I'm coming close to finally getting heads and an intake. I've settled on the L76/L92 combo but I have a few simple questions...
1.)Do the L92s bolt up to the LS1?
2.)Why are they so freakin cheap? (Part #12582714 @ SDPC $175 bare {I'm not sure if this is for a pair or one, assuming one}). I've always assumed great performance equaled high price, but if everything I've read is true, these unported heads flow 300 cfm...
3.)What all can I use from my 241 casting heads (Springs, retainers, etc.)?
4.)Will a NW 90mm throttle body bolt right up to the L76 intake?
Thanks,
Alex
1.)Do the L92s bolt up to the LS1?
2.)Why are they so freakin cheap? (Part #12582714 @ SDPC $175 bare {I'm not sure if this is for a pair or one, assuming one}). I've always assumed great performance equaled high price, but if everything I've read is true, these unported heads flow 300 cfm...
3.)What all can I use from my 241 casting heads (Springs, retainers, etc.)?
4.)Will a NW 90mm throttle body bolt right up to the L76 intake?
Thanks,
Alex
1) No, you need at least a 4 inch bore to run the L92 heads. You cannot run them on LS1/LS6 engines without sleeving the block and expanding the bore. Or getting an LS2 block, or L92 block, or a GMPP LSX block, or a C5R block, or a 6.0 iron block...
2) They are mass produced truck heads.
3) Nothing unless you want to run a cam as small as your stocker. Maybe the retainers but you should upgrade those anyway.
4) I'm not sure on that one.
On a 408 you should be able to run them though since you need a 4 inch+ bore block to make a 408 (currently).
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From: Bowling Green, KY
so basically I'm good so far, just need to make sure if the 90mm LSx style tb will fit and secondly, need to find where to get upgraded springs and whatnot for this head as I have a cam that is far from stock, and someone to port them (I'm hoping TEA will be able to get it done).
