If you've got a 90mm throttle body then you don't have a basic LS1 intake manifold. You likely have an LS2 manifold. It's basically somewhere in between the LS1 and LS6 in terms of performance if you could compartmentalize airflow without considering the throttle body opening. Since you can't realistically think of it that way the LS2 manifold is the best between the three. A ported LS2 is even better. See if you can find some numbers on the intake or throttle body.
Also, this should really be a member's ride thread so I'm moving it there.
Also, this should really be a member's ride thread so I'm moving it there.
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