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

How much air pressure to hold valves up?

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Old Mar 4, 2003 | 03:26 PM
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Why Try's Avatar
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How much air pressure to hold valves up?

How much air pressure should I use on the compressor to keep the valves up? Anyone know?
Old Mar 4, 2003 | 03:30 PM
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i dunno but i can guarantee its a lot easier and safer to just rotate the crank.
Old Mar 4, 2003 | 03:32 PM
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If you're talking about holding valves from dropping during spring replacement, many say that if you bring the piston to TDC that the valve won't drop more than 1/4", blowing up the cyl. isn't really necessary.
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