Top End Troubles - Tearing Down A 426 Hemi That Never Ran Right (A 1970 Plymouth Hemi 'Cuda Update)

In a previous video, Tom (‪@rocketresto‬) and I removed this 426 Hemi from a 1970 Plymouth 'Cuda, after I found it to run rough despite extensive tuning attempts, and discovered a lack of exhaust temperature in the manifold runner from cylinder #1. On today's episode, I'm going to dig in and look for obvious issues in this engine - and it won't take me too long to find them.

First Start Nightmare - Tearing Down A Brand New 440 Big Block In Search Of An Awful Clunking Noise
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First Start Nightmare - Tearing Down A Brand New 440 Big Block In Search Of An Awful Clunking Noise

IT'S ALIVE! Rebuilt 426 Hemi Pushrod Fix, Intake Sealing Tech, Engine Break-In, And Much More
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IT'S ALIVE! Rebuilt 426 Hemi Pushrod Fix, Intake Sealing Tech, Engine Break-In, And Much More

115 Classic Mini Restoration - Piston re ring and big ends
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115 Classic Mini Restoration - Piston re ring and big ends

The Ugliest Plane That America Couldn’t Get Enough Of
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The Ugliest Plane That America Couldn’t Get Enough Of

Inside the T-34-85
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Inside the T-34-85

Something is jamming GPS over Europe. Here's what we found
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Something is jamming GPS over Europe. Here's what we found

Obscenely Rare 1970 Sport Fury GT 440 6 Barrel Short Block Build, Piston Tech, And More
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Obscenely Rare 1970 Sport Fury GT 440 6 Barrel Short Block Build, Piston Tech, And More

Expensive Supercar Fails Caught on Camera
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Expensive Supercar Fails Caught on Camera

BLOWN UP! 1959 Dodge 315 Hemi Engine Teardown And Inspection (And How To Un-Seize A Rusty Engine)
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BLOWN UP! 1959 Dodge 315 Hemi Engine Teardown And Inspection (And How To Un-Seize A Rusty Engine)

How One Sherman Crew Killed Wittmann — The Tank Ace Hitler Couldn't Replace
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How One Sherman Crew Killed Wittmann — The Tank Ace Hitler Couldn't Replace

A Rocky Start - 426 Hemi Factory Restoration Build Recipe, Component Deep Dive, And A Big Problem
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A Rocky Start - 426 Hemi Factory Restoration Build Recipe, Component Deep Dive, And A Big Problem

The Black Ghost: Street Racing Legend - 1970 Dodge Challenger 426 Hemi Documentary
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The Black Ghost: Street Racing Legend - 1970 Dodge Challenger 426 Hemi Documentary

Street 318 Perfection - Why 273 Heads Are Good, And How To Make Them Great (A 1968 Barracuda Update)
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Street 318 Perfection - Why 273 Heads Are Good, And How To Make Them Great (A 1968 Barracuda Update)

Low-Buck Big-Block For My BARN FIND SUPER BEE! Dyno and Makeover
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Low-Buck Big-Block For My BARN FIND SUPER BEE! Dyno and Makeover

CLASSIC Cars Only Very Dumb People Buy [SHOCKING TRUTH]
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CLASSIC Cars Only Very Dumb People Buy [SHOCKING TRUTH]

Two-Twenty-Five Teardown - What's Inside This Neglected Truck Engine? (Go-Fast Slant Six, Part One)
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Two-Twenty-Five Teardown - What's Inside This Neglected Truck Engine? (Go-Fast Slant Six, Part One)

Devil In The Details - Mopar 426 Hemi Head Fitment, Cam Measurement, Clearance Checks, And Much More
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Devil In The Details - Mopar 426 Hemi Head Fitment, Cam Measurement, Clearance Checks, And Much More

The worlds most HATED CARB The Quadrajet - Explained like you’ve never seen! DON’T throw yours away!
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The worlds most HATED CARB The Quadrajet - Explained like you’ve never seen! DON’T throw yours away!

Puddles Of Mysterious Fluid - This Dead 1970 Plymouth 'Cuda 340 Needs Help
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Puddles Of Mysterious Fluid - This Dead 1970 Plymouth 'Cuda 340 Needs Help

The HORRORS of German Tank Destroyer Crews
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The HORRORS of German Tank Destroyer Crews