JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

Skip to the beginning of the images gallery

Image is a representation of this item. Actual item may vary.

Part Number:

CNC-1250-CS

CNC SB Chevy 415/421 Compstar Rotating Assembly - 13.5:1 Mahle Dome Pistons, Balanced

SB Chevy, Compstar 4340 Forged Crankshaft 3.875 Stroke, 350 or 400 Main, 6.000 H Beam Rods, Mahle 4cc Dome Pistons, 2-PC Seal, Balanced Assembly

$3,024.95

View Similar Items

⚠ 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.

Description

Compstar 4340 forged steel crankshaft, 2pc rear main seal
Compstar 4340 forged steel H beam connecting rods with ARP2000 rod bolts
Mahle forged 4cc Dome pistons
Performance file fit piston ring set
H series performance main and rod bearings
This kit is internal balanced in-house by cnc-motorsports

Compression Ratio with 58cc 14.7:1
Compression Ratio with 64cc 13.5:1
Compression Ratio with 70cc 12.5:1

Specifications

More Information
CNC Part Number	CNC-1250-CS
Price	$3,024.95
Manufacturer's Part Number	1250-CS
Brands	Compstar, Mahle
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	Mahle
Piston Type	Dome
Rod Length	6.000
Rear Main Seal	2 Piece
Piston Material	4032 Forged
Custom Notices	⚠ PROP 65 WARNING