CNC-Motorsports Chevy 415-421 short blocks have quickly raised the bar to a new level in offering high quality performance short blocks at an affordable price. CNC dart short blocks have become a huge hit among racers and performance enthusiast all over the world. We have the ability to custom build you just about any combination the way you want it. All our short blocks are 100% machined, CNC Machined and blue-printed to our race wining specs. We will never cut corners just to lessen the price. Please contact us if you’re looking for something not listed and we will be more than happy to give you a quote..
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CNC-9359-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, Mahle 13.7:1 Pistons$6,099.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, Mahle 13.7:1 Dome Pistons Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9360-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, Mahle 11.9:1 Pistons$6,199.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, Mahle 11.9:1 Flat Top Pistons Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9361-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, SRP 11.8:1 Pistons$6,050.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, SRP Professional 11.8:1 Flat Top Pistons Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9362-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, SRP 10.6:1 Pistons$6,150.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, SRP Professional 10.6:1 Dish Pistons Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-IC966E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, Icon 11.4:1 Pistons$6,150.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, Icon 11.4:1 Flat Top Pistons Designed for the 50cc heads Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9363-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, JE 13.5:1 Pistons$6,399.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, JE 13.5:1 Dome Pistons Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9364-E PART NUMBER
CNC Competition 415/421 Dart Short Block, Eagle 3.875 Crank, Eagle 6.0 H Beam Rods, Dart SHP Engine Block, JE 14.5:1 Pistons$6,399.95
SB Chevy 415/421 Stroker, Dart SHP Engine Block, Eagle 3.875 Forged 4340 Steel Crankshaft, Eagle 6.0 H Beam Stroker Rods, JE 14.5:1 Dome Pistons, Fully Machined, Balanced, Short Block Assembled and Blue-printed Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9366-E PART NUMBER
CNC Competition 415/421 Dart Short Block, Eagle 3.875 Crankshaft, Eagle 6.0 H Beam Rods, Dart SHP Engine Block, JE 14.5:1 Pistons$6,599.95
SB Chevy 415/421 Stroker, Dart SHP Engine Block, Eagle 3.875 Forged 4340 Steel Crankshaft, Eagle 6.0 H Beam Stroker Connecting Rods, JE 14.5:1 Hollow Dome Pistons Gas Ported, Fully Machined, Balanced, Short Block Assembled and Blue-printed Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9367-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, JE 13.1:1 Pistons$6,399.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, JE 13.1:1 Flat Top Pistons for 18 Degree Heads Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount. -
CNC-9368-E PART NUMBER
CNC Competition 415/421 Short Block, Eagle 3.875 Crank, 6.0 H Beam Rods, Dart Block, JE 15.4:1 Pistons$6,399.95
Dart SHP Block, Eagle 3.875 Forged Crankshaft, Eagle 6.0 H Beam Stroker Rods, JE 15.4:1 Dome Pistons for 18 Degree Heads Learn More3% CREDIT PAYMENT FEEAn additional 3% fee will be charged for applicable engines purchased via credit card, PayPal or affirm.FREIGHT CHARGEThis part will be shipped via truck freight and additional shipping charges will apply. Multiple parts shipped via freight in an order may increase the total shipping amount.