LT1 Intake Flow
Thread Starter
Intermediate
Joined: Jul 2000
Posts: 49
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From: Barrington Illinois
LT1 Intake Flow
Anyone ever put an LT1 intake on the flow bench? I am working on building a new engine for road racing and I need to find my intake restrictions.
Last edited by VetteSane; Aug 6, 2004 at 10:45 AM.
Pro
Joined: Apr 2003
Posts: 603
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From: Atlanta
I would leave it to just port matching the throttle body intake holes and gasket match the intake to head ports. And if you have a dremell tool, perhaps just smooth the inner surface of the manifold a little. That should support at least 550hp.
Burning Brakes
Joined: Sep 2001
Posts: 1,013
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I think I heard of one being tested at approx 300 cfm @ 28" of water, but don't quote me on that one. But the flow number is not necessarily a good indicator of how well it will perform.
What displacement, rpm range, and power are you targeting for your race car?
Keep in mind the the Lt1 intake does have some deficiencies for a race engine: 1) The runners are too short to offer any tuning (e.g. a intake manifold with about a 6.5-7.0 inch runner would be tuned for 6000-7000 rpm, where the 3.5 inch LT1 intake would offer no tuning benefit. 2) The plenum volume is too small, 3) The first runners are very close to the TB, and the air must make a sharp bend to enter these runners. Therefore the air distribution will not be very even between the cylinders.
What displacement, rpm range, and power are you targeting for your race car?
Keep in mind the the Lt1 intake does have some deficiencies for a race engine: 1) The runners are too short to offer any tuning (e.g. a intake manifold with about a 6.5-7.0 inch runner would be tuned for 6000-7000 rpm, where the 3.5 inch LT1 intake would offer no tuning benefit. 2) The plenum volume is too small, 3) The first runners are very close to the TB, and the air must make a sharp bend to enter these runners. Therefore the air distribution will not be very even between the cylinders.
Last edited by Mr6spd; Aug 7, 2004 at 12:21 AM.
Race Director
Joined: Feb 2002
Posts: 11,268
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From: Honolulu, HI
Originally Posted by Mr6spd
I think I heard of one being tested at approx 300 cfm @ 28" of water, but don't quote me on that one. But the flow number is not necessarily a good indicator of how well it will perform.
What displacement, rpm range, and power are you targeting for your race car?
Keep in mind the the Lt1 intake does have some deficiencies for a race engine: 1) The runners are too short to offer any tuning (e.g. a intake manifold with about a 6.5-7.0 inch runner would be tuned for 6000-7000 rpm, where the 3.5 inch LT1 intake would offer no tuning benefit. 2) The plenum volume is too small, 3) The first runners are very close to the TB, and the air must make a sharp bend to enter these runners. Therefore the air distribution will not be very even between the cylinders.
What displacement, rpm range, and power are you targeting for your race car?
Keep in mind the the Lt1 intake does have some deficiencies for a race engine: 1) The runners are too short to offer any tuning (e.g. a intake manifold with about a 6.5-7.0 inch runner would be tuned for 6000-7000 rpm, where the 3.5 inch LT1 intake would offer no tuning benefit. 2) The plenum volume is too small, 3) The first runners are very close to the TB, and the air must make a sharp bend to enter these runners. Therefore the air distribution will not be very even between the cylinders.
