Katech 416ci LS Short Block (Boosted)

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.