LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Time to pick valves for home ported heads

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Old 06-25-2006, 11:31 AM
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Default Time to pick valves for home ported heads

Should I go with stock valves or 2.0/1.5? I'm going for 260/180 flow numbers. Also what brand valves? Vortec, Ferrea, Manley, something else?

When I take the heads to me machined and milled do i just say i want them to be at stock compression or do i need to tell them a specific mill amount? I believe they were milled once but not 100% sure.

Here are pics of the chambers if it helps any: chamber1.jpg chamber2.jpg

How about these

Last edited by luckyou03; 06-25-2006 at 11:44 AM.
Old 06-25-2006, 01:14 PM
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Biggest you will want to use on Stock seats is 2.00 and 1.57s. Your machinest should have no problems cutting the seats to fit those
Old 06-25-2006, 01:15 PM
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thats what i wanted to hear, thanks
Old 06-25-2006, 04:04 PM
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2.02/1.60 is the biggest on stock seats and let the seat cuts be 35,45,65° for optimal flow in the lower lift 0.06 to 0.100
Old 06-25-2006, 09:22 PM
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Originally Posted by Ari G
2.02/1.60 is the biggest on stock seats and let the seat cuts be 35,45,65° for optimal flow in the lower lift 0.06 to 0.100

Only if you want to chance them cracking later on



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