SB Chevy 421 Super Saloon Stage 2 Race Engine (3.875 Stroke)

Here at CNC-Motorsports we strive for customer satisfaction on every engine. These motors all start with quality new Dart Little M Lightened blocks. The Dart blocks start by going to our Peterson Align hone where every block is machined within specs. From there we go to our Rottler F68A CNC machine, where we true the bell housing face, parallel square deck, bore, and stroker clearance (when required).Once the blocks are completed at the Rottler they go to our Sunnen CK-10 cylinder hone, where the block is finish honed to specification and checked with our profilometer. Each valve job is done on our Berco cylinder head machine and flow tested on our Saenz flow bench. All of our rotating assemblies are balanced on our Hines Dominator custom built balancing machine. Each component is balanced within +/- 1 grams and the crankshaft is spin balanced to within .5 grams. All engines are fully blueprinted to our race specs. 

Dart Little M Lightened Block 
Callies Magnum Crankshaft 
Callies Ultra Rods 
Diamond Custom Dome pistons 
Total Seal piston rings 
Clevite 77 coated rod and main bearings 
Dart Roller Cam bearings 

Stefs Aluminum Dry Sump Oil Pan

KSE Front Cover with Water Pump 
Fel-Pro performance gaskets 
Shaver Wesmar Gear Drive
Custom 50mm Solid roller camshaft  
Crower roller lifters 

Trend pushrods 
T&D shaft rockers 
ARP head studs 
All-Pro cylinder heads 
Ferrea Competition Plus  Exhaust Valves 
Manley titanium intake valves 
Crower Springs 
Crower titanium retainers 
Crower titanium locks 
Champ valve covers with oilers  

Peterson Scavenge Filters
Engler Fuel Injection with  Down Nozzles
ARP Hardware

MSD Billet Distributor

MSD HVC Coil

MSD Wires

MSD 7AL Box

Peterson 5 Stage Dry Sump

Waterman 500 Fuel Pump

KSE Pulley for Bert/Brinn Transmission

R2C Filter Kit

Peterson One Way Pop-off Valve
Professionally machined and blueprinted in-house by our CNC-Motorsports Staff 

790 HP and 670 Ft/Lbs Torque

***Price includes engine break in on our in-house DTS engine dyno and enrollment in our Contingency program***