621 Golden - Season 01

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Zac’s 9.3l Big Block Torque Monster V8 Hits the Engine Dyno!
621 golden Big block Chevy K5 Zac

Zac’s 9.3l Big Block Torque Monster V8 Hits the Engine Dyno!

By Andrew Hilman

  The time has come to finally see how much power Zac's 9.3 Liter (572ci) Big Block Chevy motor is making. We hit the dyno room at Smeding performance to get a lesson in how...
9.3 Liter V8 Build! - Zac's Squarebody K5 Big Block Swap Pt.2
621 golden Big block Gmc Jacob villemain Jimmy K5 Smeding performance Squarebody Zac

9.3 Liter V8 Build! - Zac's Squarebody K5 Big Block Swap Pt.2

By Andrew Hilman

  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...
9.3 Liter V8?! Zac's Squarebody K5 Gets a HUGE Motor Swap
621 golden Big block Dart big m K5 Smeding performance Zac

9.3 Liter V8?! Zac's Squarebody K5 Gets a HUGE Motor Swap

By Andrew Hilman

  The Lord of Chop is back in action on his Squarebody K5 GMC Jimmy build and things are getting serious. How serious you ask? Try 572 cubic inches of Big Block Chevy power, serious....
Zac Goes to Utah! Bringing the Jimmy to Currie Enterprises to Beef Up the Driveline
621 golden Casey currie Currie enterprises K5 Utah Zac

Zac Goes to Utah! Bringing the Jimmy to Currie Enterprises to Beef Up the Driveline

By The Hoonigans

If you’ve heard of Casey Currie, AND Currie Enterprises, you best believe they’re the same organization. Since Zac’s K5 needs a whole lotta help to be able to handle the ignorant power levels he’s about...
Zac Attempts a Full Interior Overhaul on the Big Block K5, and Learns Some Tough Lessons
621 golden Blazer Hoonigan donut garage Jimmy K5 Zac

Zac Attempts a Full Interior Overhaul on the Big Block K5, and Learns Some Tough Lessons

By The Hoonigans

Ever think to yourself “man, I wonder why this part is so much cheaper, I’m going to go with that instead”? Turns out, you’re skipping out on quality, fitment, and overall non-grossness. But hey, lessons...