What's inside a Ford Mustang 351 Cleveland Cobra Jet engine V8 tear down & rebuild with startup

I Tear down and open up this iconic 351 Cleveland Cobra Jet engine. I will also rebuild this High-Performance Ford V8 with a few upgraded performance parts.
351 Cleveland 4V Cast Iron Heads - amzn.to/3E0l1Vg
351C Cleveland Aluminum Cylinder Head -- amzn.to/3RNg7AC
The big advantage for the Cleveland was breathing. The cylinder heads were essentially plucked from the Boss 302, with minor changes. Ports and valves were much larger and the valves were canted, This means they were tilted in two planes, similar to the Chevy 396/427/454 big-block V-8. The 351C two-barrel used 2.04-inch intake and 1.65-inch exhaust valves; the four-barrel version had 2.19/1.71-inch valves (except the ’73, which used the two-barrell valves). For comparison, high-performance Chevy small block V-8s, including the 1970-72 Camaro Z/28’s LT-1, used 2.02/1.60-inch valves.
Ford would offer five different versions of the 351C in the 1970-73 Mustang.In the 1970 Mustang only two versions of the 351C, the H-code with two-barrel carburetor, and the M-code four-barrel, which also had higher compression cylinder heads (10.7:1 vs. 9.5:1), using closed-or quench-type-combustion chambers vs. open-type for the two-barrel. The two-barrel received the same 250-horsepower rating as the 1969 351W two-barrel, which also was tagged H-code.
The one-year-only 1971 Boss 351 was tagged R-code and also identified as “351 H.O.” It had 11.7:1 compression and included four-bolt main bearings, forged pistons, shot-peened connecting rods, high-lift mechanical-lifter cam, adjustable rocker arms, and aluminum intake manifold with 750-cfm spread-bore four-barrel carburetor, ram air induction, and dual-point ignition. Keep these specs in mind when you see how I built this 351 Cobra Jet engine. The 1971 Boss 351 Cleveland engine was Rated at 330 hp and could run the quarter-mile in the low-14-second range at about 100 mph, on par with the Mustang’s optional big-block 429 Cobra Jet. Ford made 1,806 Boss 351s.In the spring of 1971, Ford replaced the M-code with the Q-code, calling it the 351 Cobra Jet. Switching to open-chamber cylinder heads lowered compression to 9:1 and also reduced emissions. The Q used a higher-lift hydraulic cam, along with the Boss 351’s four-bolt main bearing caps, 750-cfm. The advertised horsepower was 280. Only 144 Mustangs got the late-arriving Q-code for 1971, according to “Mustang by the Numbers” by Marti.
The switch to net horsepower and torque ratings in 1972 reflected more realistic as-installed output. The H-code 351C two-barrel had 177 hp, while the Q, with slightly retarded camshaft timing vs. the 1971 version, packed a stout 266-hp kick. This was with dished low-compression pistons and a mild cam to help meet emission standards. For comparison (The 1972 Camaro Z/28 had 255 net hp.) The Q went into 10,249 Mustangs for ’72. Ford also offered an R-code 351 H.O. as a second performance option. It was based on the Boss 351 engine but with lower-compression open-chamber heads and a somewhat milder solid lifter cam, it was rated at 275 net hp. Car and Driver magazine clocked a 351 H.O. fastback 0-60 in 6.6 seconds and the quarter-mile in 15.1 seconds at 96 mph, still respectable for a 1972 pony car. It could be found in only 398 Mustangs, including 13 convertibles.
Mechanics and Hot rodders like myself found it easy to take advantage of these amazing heads. The specially domed pistons not only boosted the compression but took advantage of the airflow in the open chambers fed by huge canted valves. Operate those valves with a great 290 duration Cam with over 500 lift and top the engine off with an Edelbrock aluminum intake and 750 carb to take advantage of the massive Intake ports and you have a white knuckle screaming monster under the hood.
The Lunati roller rockers don't hurt much either especially if you can find enough traction to use a little more RPM.
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Do not attempt anything you see or hear in this video. Serious injury or death may occur. SaneAuto, Victor sane cannot guarantee against improper use or unauthorized modifications of this information. SaneAuto and/or Victor Sane assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. SaneAuto recommends safe practices when working on vehicles and or with tools seen or implied in this video. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not SaneAuto.
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[@bustertim5333]

Nice mustang . I had a 73 mustang coupe had a build 302 lots of fun

[@saneauto]

Did it have the fold down back seats?

[@bustertim5333]

No it didn't

[@user-cf6ys7kh6g]

Thanks man I like your brake down & info ! I'm working on a 69 / 351c & putting it in a 66 Fairlane ... Wil see how I do ,it's my first build hope Lol .

[@user-cf6ys7kh6g]

Very sweet man , I hope mine turns out half as good .. I'm on budget & poor mountain rocker lol .

[@billyb5057]

good to see the tear down and rebuild of that cool engine mate quite a project
*fully watched🥸Au🦘have a great week 💯thumbs up👍*

[@saneauto]

Glad you enjoyed it

[@Reviewing_Playing_and_More_RPM]

A38, Some of these great vehicles sadly are going to be gone, not sure the new EV Versions can hold a candle to them. Guess maybe in time.