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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

How much of a difference between LT4 and LT1 intakes??

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Old Feb 18, 2003 | 10:21 AM
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96Z28man
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From: Fairfax, VA
How much of a difference between LT4 and LT1 intakes??
Is it just better flow, and can those results be achieved by doing a basic port job on a LT1 intake???
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Old Feb 18, 2003 | 05:06 PM
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shocktrp
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No difference.

LT4 heads flow better than LT1's, but the intake does nothing.
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Old Feb 18, 2003 | 05:08 PM
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RamAir95TA
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The LT1 intake is machined for a 58mm throttle body, and the intake runners are raised .100", so they will not directly to the heads without overlap, unless the heads are port-matched to the intake.
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Old Feb 18, 2003 | 05:15 PM
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Wildwill532
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I that actually the LT1 intake was only ported for a 52mm throtal body
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Old Feb 18, 2003 | 05:20 PM
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RamAir95TA
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Yes it is...the stock LT1 manifold will fit a 52mm no problem.
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