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Well at least AMC got recognized. Nice Video

So like that holeththing u where talking about like square or circle mine has nothing there

Best MOPAR show in SouthWest.

Mopar had three variants of their heads. You had the stock heads which came in the normal passenger cars. You had the X heads for the 4bbl hp engine. Then you had the U heads that were for the 6pack hp engines. Both the X and the U were clearly visible as was seen on the hemi head that you showed in your presentation. Just a FYI for consideration.

You pointedly skipped over the 401 "Wedge" as in my odd-ball 1958 Chrysler Imperial 4 door SEDAN (yes, I know it was SUPPOSED to have a 392 Hemi, but MINE didn't and I still have the "build sheet" from under the back seat). De-bore a 426 and de-stroke it .32 inches and you have an early Wedge. The Hemi would out-top speed me, but in an 1/8th, I KILLED THEM. For a dozen years MOPAR's 401 CRUSHED all other street engines. Mine had twin AFB's hanging over the exhaust manifolds, and the 4200+ lb Torque-Flite three speed auto returned above 20 MPH hi-way no problem.

The open chamber ruins these heads because they are very prone to detonation. They have no squish at all due the very large clearance volume and this is a very bad thing. The closed chamber heads would all be much better in this important area. Unfortunately back in these days cylinder head development was not well understood by many manufacturers because the machines needed to do this kind of research had not been perfected such as flow benches as would be later made by Superflow. Having a head with good mixture motion as provided with a small and tight clearance volume is very important to performance as we will see in the best heads produced by other brands. One will notice on every good design a very small chamber and a totally flat deck on the head. The Mopar heads fail miserably in this regard as well as their poor showing on flow testing. It's one of the reasons that these engines never made the power in factory form that other brands did considering their large displacement. They could have been much better if the factory had reduced the high rotating weight that these engines have and done some serious work getting the heads to flow better. I believe that they felt that the Hemi was the engine that people would go for but it was too expensive for most so not many were every produced. Your video is very good and we appreciate the work that you have put into it.

Turn off the background music while you are talking and explaining things. We have a hard time hearing you. Nothing more distracting than background music when someone is trying to explain important things.

Pretty sure that several of the chamber volumes you mentioned are not as cast numbers but rather NHRA minimum volumes, i.e after being milled a substantial amount.

Roll it outside!

i dont think the 66-74 or so Heads are much different for power levels Just Need larger exhaust valve for Big Blocks. I have a set of 69-70? idk? 906 forever in storage had the 2.14-1.74 Fererra valves .

Thanks for sharing. One thing I'd like to add to maybe help others. Having been a Mopar only professional engine builder we had done a bunch of the 516 heads. On paper they made sense. We would put 11/32 guides in them with 2.19/1.81 valves which flowed great after some moderate porting, up to .500 they out flowed The Edelbrock RPm heads. Now here is the important part. I did read at one time that the 516 castings weren't the best for porting since the core shift was bad. Since we were just doing the basic work and not going crazy removing material figured we would be ok. Anyways while just starting to work the exhaust port on one of the heads doing the same work I've done numerous times i barely removed anything and it broke through to water. All the machining work had already been done. Needless to say That was the last time we used 516 heads lol. The LP 915 (1.60) heads are really great especially since HP(1.74) are now much rarer being only available on the 67 GTX n R/T's(possibly others just haven't seen any). All the heads respond beautifully to a 5 angle/radius exhaust valve job so it's simple enough to increase the factory 1.60 to 1.74 or 1.81 without further sinking a already cut 1.74. Even for factory engine builds the performance from idle to redline can be greatly increased 20-65hp(depending on work) with just some basic porting techniques. It's like adding a little shot of NOS but all the time to our otherwise factory appearing rides. Without affecting reliability or visual modification.

The 1963 300J 557 cylinder heads had "improved" intake ports and the larger 1.74" exhaust valves (sometimes listed as 1.75"). They were also on the optional 1964 300K engine, but not on the standard 300K engine, which had regular 516 heads. The 1967 440 915 heads were later sold as replacement heads for all standard closed chamber heads and were available for service replacement purchase through the 1970's. They had modernized intake and exhaust ports. They flowed within 3 percent of the 1964 518 426 Max Wedge heads, due the internal port shape improvements. Some sources claim the 915 heads were used on late 1967 383 we engines, mostly 2 barrel versions, when the 516 heads were discontinued. All of the late 1967 383 4 barrel Darts I've seen, have had the 516 heads though, so I question this. Some 1971 engines were assembled with 906 heads. Some late 1970's motorhome and police heads have 5/8" spark plugs, instead of 13/16" spark plugs. These heads may or may not have improved water jacket cooling. The nice thing about them is, being able to get a socket on the spark plugs more easily, especially with headers. The cast iron big block Chevy heads are actually heavier than the cast iron 426 Hemi heads. All 1967 440's, including the 350hp version, got a high rise intake manifold to match the 915 heads. All intake manifolds were switched to high rise versions in 1968, including 2 barrels, to match the 906 heads. Even though the intake ports were the same size and location as the 516 heads, the intake manifolds were raised to match the improved intake ports of the newer heads. The exhaust ports were improved also.

Thanks for the info. 915 with the large exhaust valve is the ticket. Unfortunately with all big block mopar wedge heads , they all suffer from the same thing, the valves are not long enough, limits your valve lift, that's why Chrysler brought back the Hemi design, they knew the wedge wouldn't flow for competition.

Thank you for the detailed information. 🙂

Thanks for the info from Vincennes Indiana.

Nice video Clint. 👍

My favorite Cuda!!

Absolutely gorgeous. Stunning color. Beautiful classic Mopar Muscle.

sweet

I may not be a Mopar nut, but I always wonder what is the difference between the 383 and the 440. Good vid.

That is our red 1966 Plymouth Valiant cruising by at the end! Thanks for videoing us!!

Slow it down

Good video, just a footnote crinkle zones were incorporated mid-year into 1970 production. I have an original 70 Challenger R/T with an order date of 13 March 1970 and mine has crinkle lines in the hood.

Cool video, I love these engines and the hemi. I might have missed it but it’s important for people to know that the distributor and intake manifolds are different between the B and RB engines because of the difference in the block height.

Way too 😮 much

Interesting video!! I learned alot!!

Mopar big blocks are among some of the best engines ever made with interchangeable parts being one of their strong suits and added features for over all strength...you can't go wrong with a Mopar big block.

I once owned a 70 Challenger convertible 318. This car had a skid plate on the k frame. The K frame was original to the car I believe. I'm guessing they grabbed what they had available on the assembly line. Maybe because the car was a convertible and had the torque boxes etc.

Not for that price keep it

He's asking numbers matching full restoration dollars for this mess at 65k. The "restoration" effort is the best example of putting lipstick on a pig I have ever seen. He should have left it as is and sold at a fair price. I cannot believe he slapped a bad paint job on a 35K car and thinks it raises the value to 65K just because of the V code. Plus, it's FILTHY. There's primer all over the underbody, the radiator supports are half black, the carb is very dirty, the fender tag looks too crisp to be original and doesn't have an inspection mark, which brings all the options into question, the dash is puking it's guts out, honestly all the wiring is suspect, the carpet needs replaced, lots of issues starting in the wheel wells when viewed from the trunk, and that's just what I can see from the video. I would be wary of this car at 35K.

Where is the car sales located online?

I have an original 70 barracuda steel flat hood. Ive thought of trying to turn it into a shaker hood. Not for profit but for my own . Any advice or tips in a future episode would be much appreciated. Thank you sir.

Missing factory exhaust out the side front of back tires

nice looking car.. I would have kept it a green machine though

This Chevy guy will go to bed less stupid tonight. Thanks for the explanation but it would have been nice to see a shaker hood as well. What happens to the underside bracing when someone cuts a shaker hole and and installs the outside trim ring on one of those hoods from 72 - 74? Do they need to find a 70 - 71 flat hood?

Yeah buddy

Rare car.

Hoods 101...as simple as rectangles and crinkle zones!! Great video!! 👍

Somebody is out of their freaking mind! $35,000 dollars for that piece of rusted junk! You can buy one already for that price. The money that people want these days for cars is shameful!

I thought the side exit pipes were slash cut and alittle more wide?

Skipped over some important parts! 340 Six barrel?! … Air shocks?

Where the sub frame connects at fire wall driver side go bad first.

Really in pretty good shape. Maybe $15k - $20k for paint. Another $20k for rebuilding the engine , trans and interior, another $5k for fuel system, brakes, etc, and you've got a very rare piece of auto history.

NO TITLE..

426 hemi. Best engine ever made. Igor like 😊

Leave it pro street. Chicks dig it

You would have $140,000 in a $85,000 car. 😂

Oh wow, very cool!!!!!!!!!!!

If you dont buy it someone else will ,with plenty of cash to redo er.get er done .😅❤

Are you kidding me??!!! That's a real T/A!!!