WOW!!
GENERAL INFORMATION:
NHRA horsepower ratings:
o 427 Naturally aspirated – 425
NHRA shipping weights:
o 427/N/A – 3195 lbs
427 ENGINE:
o Chevrolet Performance LS7 aluminum block
o 4.125” bore x 4.00” stroke
o Callies 5140 crankshaft
o Callies 4340 H-beam rods
o 6.100” length
o .928” pin bore diameter
o Clevite H-Series heat-treated tri-metal rod & main bearings
o Mahle 2618 alloy forged domed pistons
o Graphal coating
o Hard-anodized top ring groove
o Friction-coated skirts
o Mahle .043” x .043” x 3mm piston rings
o Ductile iron top with radius molybdenum face
o Plain cast iron tapered 2nd
o Chrome-plated oil rails with low-tension expander
o Chevrolet Performance steel billet hydraulic roller camshaft
o Duration – 233°/276° @ .050” lift
o Theoretical valve lift - .630”/.630”
o Lobe centers – 107°
Valvetrain:
o Chevrolet Performance “Ceramic Ball” high-RPM hydraulic roller tappets
o 3/8” diameter LS7 pushrods
o 1.8:1 ratio LS7 rocker arms with roller trunions
o PSI “Max Life” beehive valve springs
o Hardened steel spring seats
o Light-weight steel retainers
o Fully CNC’ed aluminum cylinder heads – based on LS7
o 275 cc nominal intake port volume
o 89 cc nominal exhaust port volume
o 70 cc nominal combustion chamber volume
o Del West titanium intake valves – 2.200” head diameter x 7mm stem
o Light-weight sodium-filled exhaust valves – 1.610” head diameter x 7mm stem
o Fel-Pro Performance multi-layer steel head gaskets with raised cylinder sealing bead
o Internal wet sump oil pump
o Deep-sump cast aluminum oil pan – 6 quart capacity
o ATI Performance Products SFI-approved damper
o Meziere billet electric water pump
o Chevrolet Performance/Holley “Hi Ram” intake manifold
o Whipple billet throttle body – 102mm blade