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

Load ? cyl heads & intakes

Old Jul 14, 2004 | 08:38 PM
  #1  
Schurters LT1's Avatar
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From: kitchener/Ontario
Load ? cyl heads & intakes

just a few things i would like to find out...



Frist heads and cfm,
-what would bad flow numbers look like
-what do good flow numbers look like
-what kind of mid number are you looking for

intake (LT1)
-what kind of flow numbers can you get out of a LT1 intake
-at what point do you need more flow from the intake and how much

Heads and intake
-what flow numbers would you like to see with the intake bolted on to the head
-what would be the perfect head and intake flow...


Now do you match the cam to the head flow numbers or do you match the cam to the head and intake numbers...

thx
Old Jul 14, 2004 | 10:42 PM
  #2  
97WS6SCharged's Avatar
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Posts: 4,784
From: Jacksonville
I'm not sure what bad flow numbers would be, but good is usually in the 260+ range on the intake, and 190+ on the exhaust for a set of ported heads.

I believe the intake flows in the 280 range, but I'm not 100% certain there. The extremely short runners are ideal for moving lots of air and making power up high.

Most builders match the cam to the heads. I don't know the science behind this so maybe Bret or someone with more experience will chime in.
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