A brand new GM block with top-shelf components. From the master engine builders at Katech. Install it yourself, or have us do it for you. Want to win? This premier street engine includes:
- Production LS3 block – CNC stroker clearanced
- 58x Callies 8CW forged crankshaft – 4-inch stroke
- Callies Compstar XD forged connecting rods
- CP-Carillo forged 4.070 pistons/rings/pins
- 10.0:1 Compression ratio with a stock LS3 chamber
- Clevite bearings
- Block oil/coolant plugs included
Valley cover and rear cover sold separately.
Crankshaft and connecting rod upgrades available at request.