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Part Number:
CNC-421-MRCPD

Molnar SB Chevy 415/421 Stroker Kit, Balanced Assembly, CP Pistons 13.5:1 Dome

SB Chevy 415 421, Molnar Crankshaft 3.875 Stroke, 350 or 400 Main, Molnar 6.000 H Beam Rods, CP Pistons +5.1cc Dome, Rings, Bearings, Balanced Assembly

$3,104.95
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⚠ PROP 65 WARNING
⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.
CNC-Motorsports is please to offer 415/421 Molnar rotating assembly kits. This kits is designed for performance application builds up to 900 horsepower. This kits offer 2618 forged pistons with premium steel gas nitrided piston rings for mild power adders. All kits come Internally balanced and are ready for you to assemble.

Molnar 4340 forged steel crankshaft, 3.875 stroke, 2 piece rear main seal
Molnar 4340 forged steel H beam connecting rods with ARP2000 rod bolts, 6.000 Length
CP-Carrillo Bullet pistons, 2618 forged, standard .150 wrist pins and spirol locks included *fits 23 degree heads* 1.062 C/H
CP Performance gas nitrided file to fit ring set 1.5 x 1.5 x 3.0mm
Race H series main and rod bearings included
Rotating assembly has been fully internally balanced in-house by CNC-Motorsports
Compression Ratio with 64cc: 13.5:1
Compression Ratio with 70cc: 12.4:1
Note: Small Base Circle camshaft required
Compression is figured at 4.125 bore, 0 deck, 4.190 bore gasket, .041 thick
More Information
CNC Part Number CNC-421-MRCPD
Price $3,104.95
Manufacturer's Part Number 421-MRCPD
Brands CP, Molnar
Part Types Engine Rotating Assembly Kit
Departments Parts
Vehicle Make SB Chevy
Balanced Assembly Yes
Balance Type Internal
Crankshaft Material 4340 Forged Steel
Crankshaft Stroke 3.875
Piston Brand CP
Piston Type Dome
Rod Length 6.000
Rear Main Seal 2 Piece
Piston Material 2618 Forged
Custom Notices ⚠ PROP 65 WARNING
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