DOUBLE the Horsepower On A Mildly Modded AMC 258 Straight 6

BEST OF ENGINE POWER: We're diving headfirst into what should have been a simple "aerosol overhaul" on a forgotten AMC 258 straight-six engine from a vintage mail carrier Jeep. But as we uncover more than just dirt, this project quickly escalates into a full-blown refresh! Will this overlooked classic deliver surprising horsepower and torque, or will it remain a postal relic? Tune in to find out what secrets this AMC engine holds! Jeep DJ5 Goes From Mail Jeep to Delivering the Trails - Full Build    • Jeep DJ5 Goes From Mail Jeep to Delivering...   PARTS USED IN THIS EPISODE Summit Racing Camshaft Kit https://pntv.us/pn_pt_16832_5fe3ca2f7... Summit Racing Offenhauser Dual Port Intake Manifold https://pntv.us/pn_pt_16834_5fe3cb7e5... Summit Racing Scorpion Rockers https://pntv.us/pn_pt_16833_5fe3cadc8... CRC Industries Heavy Duty Pro-Strength Degreaser Matco Tools MATCO Tools are the Official Tool Supplier to PowerNation The Industrial Depot Tools, Hardware, Shop Supplies

Complete Rebuild Of An AMC 304 Including Adding Port Fuel Injection - Engine Power S8, E5
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Complete Rebuild Of An AMC 304 Including Adding Port Fuel Injection - Engine Power S8, E5

Will This 80 Year Old Motorcycle Run Again? Sitting For Decades!
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Will This 80 Year Old Motorcycle Run Again? Sitting For Decades!

Why This 1969 AMX Owned Every Corvette on the Strip
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Why This 1969 AMX Owned Every Corvette on the Strip

The Shocking Truth About AMC 232 Engine – The Inline-6 Engine That Saved an Entire Automaker!
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The Shocking Truth About AMC 232 Engine – The Inline-6 Engine That Saved an Entire Automaker!

Can We Build this $1000 Junkyard 318 LA into a 400hp Monster? Part 1
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Can We Build this $1000 Junkyard 318 LA into a 400hp Monster? Part 1

Dyno Death March! Testing Jeep Engine Combos for Power
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Dyno Death March! Testing Jeep Engine Combos for Power

We Bought an Abandoned Ship 4 Years Ago... This Is What Happened
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We Bought an Abandoned Ship 4 Years Ago... This Is What Happened

Before Electricity: Crafting a Massive Water Wheel Shaft from Solid Oak (1964)
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Before Electricity: Crafting a Massive Water Wheel Shaft from Solid Oak (1964)

CJ7 SIMPLIFIED!! Holley 2 Barrel and HEI Distributor Install on my AMC / Jeep 4.2 258
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CJ7 SIMPLIFIED!! Holley 2 Barrel and HEI Distributor Install on my AMC / Jeep 4.2 258

Did we blow up My Favorite Truck?
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Did we blow up My Favorite Truck?

Settling the Roller Cam Versus Flat Tappet Debate Once and for All!
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Settling the Roller Cam Versus Flat Tappet Debate Once and for All!

Big Power Jeep Straight Six Stroker Build on a Budget with Newcomer Racing
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Big Power Jeep Straight Six Stroker Build on a Budget with Newcomer Racing

Buzzin Dozen!! 1975 Freightliner FLT Will it Run & Drive - Part 1
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Buzzin Dozen!! 1975 Freightliner FLT Will it Run & Drive - Part 1

The Truth About the AMC 258 Inline-6 Engine – The Indestructible Engine Jeep Couldn't Let Go!
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The Truth About the AMC 258 Inline-6 Engine – The Indestructible Engine Jeep Couldn't Let Go!

How Broken 8-Cylinder Engine Head Was Rebuilt Like Brand New | Incredible Metal Stitching
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How Broken 8-Cylinder Engine Head Was Rebuilt Like Brand New | Incredible Metal Stitching

What Happens If You Just Add A Stroker Kit To A Stock Mopar Magnum?
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What Happens If You Just Add A Stroker Kit To A Stock Mopar Magnum?

Building a 500HP Retro LQ4 V8 for a Land Cruiser!
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Building a 500HP Retro LQ4 V8 for a Land Cruiser!

ICONIC Jeep 4.0L Inline 6 Engine is VERY Broken! Intentional? Neglect? Ill-Repair?  I Am IMPRESSED!
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ICONIC Jeep 4.0L Inline 6 Engine is VERY Broken! Intentional? Neglect? Ill-Repair? I Am IMPRESSED!

AMC modern era in-line six 232, 199, 252, 258, 282, 242
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AMC modern era in-line six 232, 199, 252, 258, 282, 242

Don't throw away old generator engines if you don't know this! You'll be shocked
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Don't throw away old generator engines if you don't know this! You'll be shocked