COPO Camaro Engine Specs Anyone know the specs on the 427 engine? LSA,etc. |
Cam specs aren't given, but its a 13.5:1 CR 4.125 bore 4.100 stroke forged steel rods and crank thats pretty much all the info given GM Part# 17802825 http://paceperformance.com/i-1030664...te-engine.html |
http://www.enginelabs.com/engine-tec...-stock-racing/ Not exactly what you are looking for, but may answer some questions |
Originally Posted by 62nalide
(Post 19023478)
Cam specs aren't given, but its a 13.5:1 CR 4.125 bore 4.100 stroke forged steel rods and crank thats pretty much all the info given GM Part# 17802825 http://paceperformance.com/i-1030664...te-engine.html |
Here ya go: Chevrolet Performance LS7 aluminum block 4.125" bore x 4.00" stroke Static compression ratio - 13:1 nominal Callies 5140 crankshaft Callies 4340 H-beam rods 6.100" C-C length .928" pin bore diameter Clevite H-Series heat-treated tri-metal rod and main bearings Mahle 2618 alloy forged domed pistons Graphal coating Hard-anodized top ring groove Friction-coated skirts Mahle .043" x .043" x 3mm piston rings Ductile iron top with radius molybdenum face Plain cast iron tapered 2nd Chrome-plated oil rails with low-tension expander Chevrolet Performance steel billet hydraulic roller camshaft Duration — 233°/276° @ .050" lift Theoretical valve lift — .630"/.630" Lobe centers — 107° Off of Pace Performance's Website. |
Originally Posted by redtan
(Post 19023771)
4.125 x 4.100 does not make a 427...there seems to be a disconnect with the specs there :zzz:
Originally Posted by 427zm
(Post 19023779)
Here ya go: Chevrolet Performance LS7 aluminum block 4.125" bore x 4.00" stroke Static compression ratio - 13:1 nominal Callies 5140 crankshaft Callies 4340 H-beam rods 6.100" C-C length .928" pin bore diameter Clevite H-Series heat-treated tri-metal rod and main bearings Mahle 2618 alloy forged domed pistons Graphal coating Hard-anodized top ring groove Friction-coated skirts Mahle .043" x .043" x 3mm piston rings Ductile iron top with radius molybdenum face Plain cast iron tapered 2nd Chrome-plated oil rails with low-tension expander Chevrolet Performance steel billet hydraulic roller camshaft Duration — 233°/276° @ .050" lift Theoretical valve lift — .630"/.630" Lobe centers — 107° Off of Pace Performance's Website. |
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That's straight out of the Copo build book |
Must be a typo somewhere, whether the final displacement or the bore/stroke. The 427 7.0 LS7 from the Z06 and Z28 is 4.125 x 4.000 |
It is a typo. Just looked in my 2015 GM performance parts catalog, it says 4.00" stroke. All other posted specs look accurate. |
Ahhh cool, thanks for clearing that up |
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