piston-deck clearance
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Pro
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From: Austin Texas
piston-deck clearance
anyone know off hand the piston-deck clearance on the LT-1's from 92-96 ? thx
I'm thinking maybe .025 is typical ?
I'm thinking maybe .025 is typical ?
Last edited by ChrisWhewell; Apr 16, 2012 at 02:00 PM.
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9.025" is the standard deck height on a small block chevy, which would make the piston 0.025" in the hole like others have mentioned. 
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Thanks ya all, I'm trying to figure out what thickness gasket to use before the old heads are off, to get the quench where I want it. I truly appreciate all ya alls' replies cuz I want to order the gasket ahead of time if possible.
Racer
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When I measured the deck height on my '95 engine it was .025"-.026". I wanted to get a .040" quench so I had the block decked .015" and used a .029" head gasket from Mr. Gasket. With a 56.9 cc chamber it gives 10.9:1 compression. You will have to have the manifold surfaces milled also or the manifold won't fit right, it's the same as milling your heads .036"
Jim
Jim
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When I measured the deck height on my '95 engine it was .025"-.026". I wanted to get a .040" quench so I had the block decked .015" and used a .029" head gasket from Mr. Gasket. With a 56.9 cc chamber it gives 10.9:1 compression. You will have to have the manifold surfaces milled also or the manifold won't fit right, it's the same as milling your heads .036"
Jim
Jim
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Jim
Last edited by LT1inaMGB; Apr 17, 2012 at 05:41 PM.
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Good spot on that one Jim !! I'm putting iron vortec's on the 350 that's in my '67 pickup, but will also be able to use the discussion when I swap heads on my 93 C4. Got both a set of LT-1 alum. heads and the vortec's side by side on the bench, obviously the vortecs are superior but no surprise given they came later. Got XE250H comp cam, good low end Tq & low overlap so probably high manifold vacuum which is what I want for MPG, its a workhorse farm truck with SM-420 trans, 4:55 axle ratios, yes its a K-20, kinda hard to find seein hows they only made 2,733 of em. I'll try the 0.015 gaskets, if it fks up I guess I'll get out my guitar and drink a couple beers and order a crate motor.
Last edited by ChrisWhewell; Apr 17, 2012 at 07:48 PM.
