Looking for Professionalquality and Reliable Performance? CNC-Motorsports will give you just that!
Here at CNC-Motorsports our short blocks start with new Dart Dart Big M sportsman block. We start by seasoning the new Dart block, we run each block threw 7 to 10 heat cycles before we do any machinework. New blocks have a tendency to change .001 to .002 thousands after the heat cycles are complete. Allblocks are checked and then line honed if needed to get a baseline for all of the BHJ blueprinting fixtures. From thispoint we square up the decks using BHJís Blok-Tru to get the desired deck heights. Once this is done we bore the blockusing BHJís Bore-Tru to get the desired spacing.
The nextstep is the honing process. We install main caps and torque plates to ensure cylinder bores ends up as true to actualrunning conditions as possible. In our honing process we aim for around 30? crosshatch to achieve the most compressionwhile still allowing the rings to travel. Bores are measured with plates still attached and recorded on the blue printsheet.
Once all the machine work is completed, the block is washed and prepped for assembly.During the assembly process, all components are measured and corrected to obtain correct clearances. All of these measurementsare recorded on the blueprint sheet.
Rotatingassemblies in these short blocks are all weight matched within +/-2 grams, and the crankshaft is balanced with in ? ofa gram.
Here at CNC Motorsports we strive for excellence in our craftsmanship to provideour customers with the best possible product money can buy
Big Block Chevy Short Block Assembly
- New Scat/Eagle 4340 forged steel crankshaft
- New Scat/Eagle H-Beam connecting rods ( BushedFit Pins )
New JE forged high performance aluminum pistons, with pins and locks High performance plasma moly piston ring set
- Clevite 77 Rod & Main Bearings
- Dura Bond Cam Bearings
- Dura Bond Finishing Kit
- Freeze Plugs
- Victor Reinze Rear Main Seal
- New Dart Big M Sportsman Block ñ Has 3 Centered 4 Bolt Splayed Caps
Crankshaft Stroke Rod Length Bore Piston Type Piston Brand Compression Ratio 118cc 4.000 6.535
-3cc Flat top JE Forged 9.3:1
SKU BCNC-8176 Vehicle Make N/A