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LS7 heads on a LS2?

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Old May 6, 2009 | 11:52 AM
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Smile LS7 heads on a LS2?
i was woundering if LS7 heads would work on a LS2. I came a cross a set of LS7 heads an a intake and wanted to know would they work on my LS2? has any done this yet or have some info about it?
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Old May 6, 2009 | 01:54 PM
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Originally Posted by deadhorse66
LS7 has a different deck than the other GenIV engines. 6 bolts around each cylinder as opposed to your 4.
This is not true - LS7 heads use four bolts per cylinder. The problem is that LS7 heads require a larger bore than the LS2 block.
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Old May 6, 2009 | 02:07 PM
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Is the search feature broken again?
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Old May 6, 2009 | 02:12 PM
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The LS2 has a 4.000" bore and the LS7 has a 4.125". And the LS2 can only be bored to 4.030". Can i use the springs, rocka arms, lifters and push rods on my LS2 heads?
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Old May 6, 2009 | 02:12 PM
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Default LS7 heads on a LS2?
Originally Posted by Gary Z
This is not true - LS7 heads use four bolts per cylinder. The problem is that LS7 heads require a larger bore than the LS2 block.
Correct. I am running a set of four bolt ET Performance LS7 heads on a resleeved LS2 block. Most LS7 heads require a minimum bore of 4.100. ET Performance make two LS7 heads. One will work on a 4.000 bore or larger.
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Old May 6, 2009 | 02:18 PM
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okay but i have a set of stock Z06 LS7 heads.
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Old May 6, 2009 | 02:53 PM
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Yeah, I effed that one up. Sorry! Now all you need is a big bore block!
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Old May 6, 2009 | 04:13 PM
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lost me on the last post.
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Old May 6, 2009 | 04:30 PM
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You said you have the heads, right? Now all you need is some kind of block that will go over 4.1" bore, and you'll have something pretty hard to tangle with.
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Old May 6, 2009 | 04:51 PM
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yea. but i also have my vette LS2. and was just woundering if i could use the LS7 heads. some say yea others say no. so for those that say no bout the LS7 heads on a LS2 block. can i use the springs,rockers,lifters,& push rods thats on the LS7 heads in my LS2 heads?
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Old May 6, 2009 | 04:56 PM
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No, the rockers are offset, kind of like an L92. The lifters I know you can use, but I'm not sure about the pushrods or springs. I vote you get the heads and build an LS7!
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Old May 7, 2009 | 01:30 AM
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Originally Posted by bigwill1983
1) Can I use the LS7 heads on my LS2?

2) Springs?

3) Rockers

4) Lifters?

5) Pushrods
Answers:
1) No, the intake valves are too large for a 4.00" bore. Yes, if you replace the seats and valves with 2.15" or smaller intake valves. Quite costly though.

2) Yes, if you shim them to the proper installed height.

3) No, and there's no need since the LS2 port is narrower.

4) Yes.

5) No, they are the wrong length for a stock LS2.
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Old Mar 20, 2021 | 06:42 AM
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Default U got a link to the website????
Originally Posted by DBN
Correct. I am running a set of four bolt ET Performance LS7 heads on a resleeved LS2 block. Most LS7 heads require a minimum bore of 4.100. ET Performance make two LS7 heads. One will work on a 4.000 bore or larger.
U have a link to the website???
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Old Mar 20, 2021 | 08:30 AM
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Do not know if they are still around. But they are not a site sponsor so he would not be able to post the link
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Old Mar 20, 2021 | 09:19 AM
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ET is Mast Motorsports
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Old Mar 20, 2021 | 04:05 PM
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Originally Posted by Corona
ET is Mast Motorsports
Those Mast heads Must be “out of this world”...



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Old Mar 20, 2021 | 04:26 PM
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Wow. 12 year old thread bump lol
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Old Mar 20, 2021 | 04:32 PM
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Originally Posted by Tony Corley
Wow. 12 year old thread bump lol
Not even close to the record here on Tech...
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Old Apr 8, 2021 | 08:25 PM
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Originally Posted by Che70velle
Not even close to the record here on Tech...
You got my curiousity now lol - what is the record????!
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Old Apr 8, 2021 | 08:57 PM
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Originally Posted by momofx
You got my curiousity now lol - what is the record????!
I remember a 14 year old thread being booted not long ago. This would be a question for GAtsma. He’s all about keeping tabs on this subject.
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