lt4 head gasket ???
11-16-2007, 09:09 PM
#1
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lt4 head gasket ??? Hi, I'am building a lt4. it had some head damage. I had it welded and refaced. they took .012 off the surface. Can i use a stock .039 thick head gasket or do i need to go up to a .051 gasket. will .012 off the head alter the compression ratio a lot or valve clearance to piston.:
11-16-2007, 09:54 PM
#2
naw, dont worry about the .012 at all.
Alittle more compression is good for you
Is the block stock? you need to know what the deck height is before you pick a gasket.
You want the deck height + gasket thickness to be about ~.040
Deck height is how far the pistons are below the block surface at their highest point.
If the block has the normal deck height of ~.028, then just get the thinnest gasket around, which I believe is a .026 that summit carries. Not optimal, but it will work.
Alittle more compression is good for you
Is the block stock? you need to know what the deck height is before you pick a gasket.
You want the deck height + gasket thickness to be about ~.040
Deck height is how far the pistons are below the block surface at their highest point.
If the block has the normal deck height of ~.028, then just get the thinnest gasket around, which I believe is a .026 that summit carries. Not optimal, but it will work.
