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12-31-2015, 07:23 PM | #1 |
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Join Date: Dec 2014
Location: Coal City, IL
Posts: 695
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Aftermarket connecting rods???
Why are most performance aftermarket connecting rods .025" longer?
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Tony Nicholas @ Midwest Metal Masters 1953 Chevy 3100 392 Hemi w/727 & 9” Ford 1985 Chevy C/10 6.0L 4L80 373 locker |
12-31-2015, 08:23 PM | #2 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Aftermarket connecting rods???
IIRC its to have the piston be 0 decked (piston even with block deck).
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12-31-2015, 08:31 PM | #3 |
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Re: Aftermarket connecting rods???
The stock deck height is .025"?
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Tony Nicholas @ Midwest Metal Masters 1953 Chevy 3100 392 Hemi w/727 & 9” Ford 1985 Chevy C/10 6.0L 4L80 373 locker |
01-03-2016, 12:26 AM | #4 |
Fabricate till you "puke"
Join Date: Jun 2002
Location: Ill
Posts: 9,402
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Re: Aftermarket connecting rods???
I will take a shot @ the ?....speaking from gen I experience (mostly), the pistons are generally about .025 below the deck. These engines, ran a factory gasket, in the range of .015- .018... (.040- .042 on the deck). This made a nice 'quench" figure....rebuild, the pistons are .025 shorter, & if you compound that with a .038 gasket, it don't take long to figure that you have crap for quench? The stock pistons on my 5.3 LS, are slightly positive deck (factory)! however, I understand that the replacement pistons, on the overbore are slightly shorter? If you are seeing a longer c to c on the rod, it may compensate for this....so you can still run the thick multi layer gasket , without decking the block I am very new to the LS mills, but will report what I see The stock LS, that I did the top end on....did have pistons , that were positive deck (maybe .006)....Longhorn
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