KSR Race Parts
346 Cu In LS Shortblock
346 Cu In LS Shortblock
Professionally machined and assembled 346 cu in boost ready short block.
LC9 block with ARP main studs and line honed, bored to 3.890", honed and decked. Stock gen 4 5.3 crank cleaned, polished and balanced. BTR forged rods. BTR forged pistons for 3.890" bore. All new cam, rod, and main bearings with clearances checked (will include specs with build sheet). Improved Racing billet barbell.
Does not include cam but we can spec/provide one. No front or rear covers, oil pan, windage tray. We can make this into a long block for extra, depending on what parts you want.
Couldn't load pickup availability
Emissions Regulations
Emissions Regulations
Some of the parts sold on our store are illegal to install on an emissions controlled vehicle. Please check with your local state / city emissions office to verify whether this item is legal for installation on your vehicle.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
1965 and older U.S. manufactured California Certified vehicles
1967 and older U.S. manufactured Federally Certified vehicles
1967 and older Foreign manufactured vehicles
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles
1968 and newer U.S. manufactured Federally Certified vehicles
1968 and newer Foreign manufactured vehicles
Shipping & Returns
Shipping & Returns
