KSR Race Parts
KSR Boost Ready 5.3 Shortblock
KSR Boost Ready 5.3 Shortblock
Fully spec’d and professionally built by KSR Performance and Fabrication in Gainesville FL
5.3LS boost ready short block, 328ci
1200hp rated
Block is stock gen 4 5.3 Aluminum block LC9.
Jet washed/bead blasted block, line honed with ARP main studs, decked, bore and honed with torque plate (.020” over so 3.800” bore) balanced and polished crankshaft, tig welded regulator wheel on.
New durabond cam bearings
New Clevite H series rod and main bearing
BTR 4340 Forged H Beam rods with ARP bolts
BTR/Wiseco Boosted LS Pistons -3.2CC flat top, upgraded wrist pins
Improved Racing oring billet barbell
Can Be built into Longblock with little lead time
*Call for shipping*
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
