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LS7 vs Ls3 intake bolt pattern

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Old Jan 14, 2016 | 09:47 PM
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Default LS7 vs Ls3 intake bolt pattern

I understand the ls7 vs ls3 ports are different. Can anyone confirm or deny if any of the mounting holes line up?

I'm using an old crap 5.3 as a mock up in my nova, but end goal will be building a motor with ls7 heads/intake. I am hoping to mock the intake up on the 5.3 to build firewall and such, but can't come up with a clear yes or no if it will bolt on at all. Even if just a few holes line up.

I appreciate any help.

Thanks!
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Old Jan 15, 2016 | 06:42 AM
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Same mounting holes.
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Old Jan 15, 2016 | 04:19 PM
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excellent.

Thanks.
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Old Jan 15, 2016 | 11:19 PM
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Originally Posted by cajundragger
....but end goal will be building a motor with ls7 heads/intake....
How many cubes you gonna run?

KW
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Old Jan 18, 2016 | 07:24 AM
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not sure on stroke yet, but I've firmly settled on a 4.125" bore.

its going in a autox/track day car. I don't necessarily need gobs of low end torque, so I have had interesting thoughts about using a 3.267" or 3.622 crank.
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