LS1TECH - Camaro and Firebird Forum Discussion

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

valve question

   
Old 10-08-2010, 11:10 PM
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i was wondering what the biggest valve you can fit in the stock valve seats on a 94 lt1 head
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Old 10-08-2010, 11:28 PM
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2.00 intake, 1.56 exhaust.
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Old 10-08-2010, 11:49 PM
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You can technicly fit a 2.02 valve on the seat, but it sets lower and the throat cannot be opened up enough and still have the seat thick.
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Old 10-09-2010, 06:08 AM
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No reason to go any bigger than 2.00" IMO.
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Old 10-09-2010, 06:28 AM
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This^^
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Old 10-09-2010, 09:39 AM
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Originally Posted by lt1-xjs
2.00 intake, 1.56 exhaust.
I would also think this would be the optimum for stock. I run LS1 valves in my ported stockers.
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Old 10-10-2010, 12:13 AM
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are the ls1 valves any longer than the stock lt1 valves
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Old 10-10-2010, 12:38 AM
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Originally Posted by jester1614
are the ls1 valves any longer than the stock lt1 valves
Lighter than most aftermarket valves IIRC due to the valve stem size.
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Old 10-10-2010, 01:05 PM
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Originally Posted by speed_demon24
Lighter than most aftermarket valves IIRC due to the valve stem size.
So you'd have to get your guides to match the LS1 valves.
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Old 10-10-2010, 01:52 PM
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ok now what about stock valve length? are they the same length
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Old 10-10-2010, 01:56 PM
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Originally Posted by WS Sick
So you'd have to get your guides to match the LS1 valves.
Yep if I was going through the trouble I would run LS6 valves. It's not cost effective for my application though.
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