Compression height of stock LS3 pistons
03-22-2011, 04:13 AM
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Compression height of stock LS3 pistons Is anyone able to confirm the compression height of stock LS3 pistons?
Oddly when I look at the specs of replacement pistons from Weisco and Diamond, the compression heights differ.
Oddly when I look at the specs of replacement pistons from Weisco and Diamond, the compression heights differ.
03-24-2011, 04:12 AM
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If it's for the same length rod the compression height can't differ too much. Many aftermarket forged pistons are for an aftermarket rod which is a bit longer. I believe diamond makes a forged piston for a stock length rod, haven't heard of wiseco making one.
03-24-2011, 04:48 AM
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The only source I found is that they are 1.340-in
(3.622/2) + 6.098 + 1.340 = 9.249
The block deck is 9.240, so do they really stick 0.009 above the deck?
(3.622/2) + 6.098 + 1.340 = 9.249
The block deck is 9.240, so do they really stick 0.009 above the deck?
Last edited by Hans Grüber; 03-24-2011 at 05:01 PM.
03-24-2011, 11:28 AM
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9.249 - 9.230 = 0.019 Trending Topics
03-24-2011, 11:45 AM
#8
Block deck height on the aluminum engines is typically 9.240" or so (it does vary one to the next by a small amount). That would make a 1.340" CD piston on a stock crank and rod out of the hole .009". That is pretty close, since most of these stock combos have the piston out between .005" and .010". Not uncommon at all!
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03-24-2011, 07:20 PM
#10
Block deck height on the aluminum engines is typically 9.240" or so (it does vary one to the next by a small amount). That would make a 1.340" CD piston on a stock crank and rod out of the hole .009". That is pretty close, since most of these stock combos have the piston out between .005" and .010". Not uncommon at all!
