In Pt.2 of Zac's quest for earth shattering torque in his 1978 k5 GMC Jimmy, the 572ci Big block is assembled from pan to intake and prepped for its Dyno session. Engine builder, Jacob Villemain from Smeding Performance gives us an in depth run down on all of the components used in the motor along with detailed tips throughout the assembly process. This engine features a Dart Big M engine block, custom crank and rods by Smeding, JE Pistons, billet core custom ground hydraulic roller cam by Comp Cams, AFR 335 Heads, Edlebrock Victor Jr. Intake, and A Holley Sniper X-Flow EFI system. Its safe to say this thing is gonna be a handful on and off the road.

Catch up on the k5 build here:
572 Swap Pt.1 -    • 9.3 Liter V8?! Zac's Squarebody K5 Ge...  
4l85e/NP205 swap -    • It RUNS! 454 V8 GMC Jimmy Project Mov...  
Painless Wiring harness install -    • Zac’s K5 Blazer is a Wiring Spaghetti...  
Vintage Air front runner kit -    • Making a 1978 K5 GMC Jimmy 200% More ...  
Vintage Air A/C install -    • Cold Air Chronicles Pt. 2: Finishing ...  
Currie axle & diff rebuild -    • Zac Goes to Utah! Bringing the Jimmy ...  

Special Thanks:
@smedingperformance
@thatengineguy
@holleyperformance
@dartmachinery
@AFR_Heads
@CompCamsOfficial
@gearstarpro
@painlesswiring
@vintageair_
@currieenterprises
@thermotec
@driveshaftpro