LS7 Street Attack Shortblock



LS7 Short Block for N/A Applications

Estimated 4-8 week lead time


Up to 750+ highly affordable horsepower from a brand new GM block with top-shelf components. From the master engine builders at Katech.

This engine includes:
New production LS7 block
58x Callies forged crankshaft – 4-inch stroke
Callies forged connecting rods
Diamond forged 4.125″ pistons/rings/pins
11.2:1 Compression ratio with a stock LS7 chamber
Clevite main & rod bearings
Block oil/coolant plugs included
*valley cover and rear cover sold separately

Higher compression ratios available upon request