David Vizard's Mission Impossible 318 finished design open chamber heads! Can it do it?

Finally some Mission Impossible action. Finished flows and intake /carb flows. I think the Mission is possible!!!

[@timothyarnott3584]

Hey Charles, Tim here, i like ur idea of workin on the exhaust, cuz the intake gives a wall of no more flow......with a cam that will have the right ovelap, to provide a nice pull from the intake, it sounds like the rite thing, also, the right cam, will scavenge better with ur revised exh port, ergo, allowing the intake time to provide a fresh charge.......i like the idea, and YES, missed you!!!.....hope ur stuff got accomplished, and look fwd to more tech!!

[@gordocarbo]

Was a kid in the3 gas crisis in the 7-s. Neighbor would buy 70 R/T challengers in purple..1st day the 383 would come out get tossed in the backyard and a bluprinted, well tunes 318 2bbl went in. Everyone tossed big blocks out back in the day I would find them in fields vacant lots etc. Little head work big 2 bbl holley blackjack headers Isky Supercam and thrush turbos dumped at the axle .

[@kylemilligan752]

Great stuff for the Mopar guys!!! Thank you Sir!!!!

[@servediocylinderheads]

Glad you like it.

[@MidnightOilsRestoration]

Ok so I do have a question for what to do about the one oddball port on each head that feeds the egr? Do you fill that back wall? The little 2 barrel is the Carter BBD. Great work as always Charlie! 😊👏👏👏

[@servediocylinderheads]

@@MidnightOilsRestoration I leave it. It may be worth a few hp to fill it. I have done air flow testing with and without fill. Barely changes flow.

[@MidnightOilsRestoration]

@@servediocylinderheads thanks again Charlie, you're the best... just ask DV😁

[@servediocylinderheads]

@@MidnightOilsRestoration His favorite head porter is the top guy at Dart... I am his second favorite. Thanks

[@roadrunner4404]

I used to dream of doing this but never did. Stayed a welder instead. Great info buddy. Easy to learn from.

[@servediocylinderheads]

Welding is a must have. Thanks

[@clarkmcmahan1595]

You did a good job on the flow curve especially. On the higher lifts it does not fall off and the internet numbers added was impressive..glad to see you posting again

[@servediocylinderheads]

Thanks

[@arturozarate1752]

Good work Chuck! I agree the carburetor and manifolds will be your "nemesis."

[@servediocylinderheads]

No doubt!

[@bcbloc02]

Can’t wait to see this thing hit the dyno!

[@servediocylinderheads]

Me too!

[@shanescinto3600]

Awesome work Charles 👏 👌

[@servediocylinderheads]

Thanks 👍

[@gordocarbo]

Nice job excellent finish work. Factory iron is a pain

[@servediocylinderheads]

Thanks!

[@grahamm3559]

Looking forward to more videos Charlie 👍

[@servediocylinderheads]

Thanks

[@carterlee8344]

Port work passageways look like the statue of David.

[@servediocylinderheads]

Is that good?

[@servediocylinderheads]

Kidding, I have seen that statue in person. Unbelievable! Thanks!

[@psychoholicslag4801]

Reminded of a bumper sticker I saw years ago. I miss my ex but my aim is improving. Improving exhaust flow reduces pumping losses which is as close to free power as you can get.

[@servediocylinderheads]

Exactly what I was thinking. Thanks

[@MidnightOilsRestoration]

😅😂

[@jonathoncouchey7151]

Those cast maniflds work okay. Like i said the early magnum exh maniflds flow quite well especially the 1992-93 for the 3/4 trucks. And of course the 340hp/police headers.

[@CJ5EVOLUTION]

Yes it will be definitely interesting to know what the output from performance trend Engine Analyzer Pro and DV IOP program.

[@servediocylinderheads]

Working some bugs out with Stan now. Stay tuned!

[@servediocylinderheads]

Iop program video finished on Eq China Magnum heads. Will publish this week. Thanks

[@rayowens4355]

Looks good Charlie

[@servediocylinderheads]

Thanks

[@brucethomson3512]

All interesting stuff 😊

[@servediocylinderheads]

Thanks!

[@darrylsmith7908]

Could you weld those chambers to be closed? I would think that would help out the engines compression and burn efficiency since it’ll actually have a quench pad.

[@servediocylinderheads]

They will get .1" mill to have quench. Welding iron is problematic.

[@darrylsmith7908]

@@servediocylinderheads what will be done to the intake to fit those heads?

[@servediocylinderheads]

@@darrylsmith7908 There are multiple videos on this manifold and it's develpement. Thanks

[@jonathoncouchey7151]

To slip by the average joe your probably best to run the single plane boat 2 barrel you have and a set of those 92-93 magnum exhaniflds with the 2.5 exhaust flange. Painted corporate blue.

[@mrrolandlawrence]

wow thats a name ive not seen in years! He was man back in the day.

[@servediocylinderheads]

Check his videos out! Thanks

[@gordocarbo]

He is still around. Id get busted in class or by my parents reading his books I bought at the dealership wtih lawnmowing money rather than schoolbooks

[@20alphabet]

Could you do a cast iron Chevy spreadbore intake to closer match the flow of ported Dart heads?

[@servediocylinderheads]

I don't have any in stock. I have done it before, the only way it is worth all the work is if you are building a sleeper. Thanks

[@20alphabet]

I have it. It's casting 3965577 for the 350hp 350 and the Quadrajet. I could send it, if that's something you'd do. The Dart heads flow at 290-300cfm @500-600 lift.

[@servediocylinderheads]

@@20alphabet I have done aluminum intakes like that. They require drilling holes in each branch of the upper and lower branch. Welding in curved dividers, tons of grinding, weld a spacer to plenum. Iron is much harder to weld, I wouldn't even attempt it. I would think about grinding an Iron intake like I did the two barrel 318 intake. It would be pricey due to the amount of grinding and testing involved. Thanks

[@20alphabet]

Thought it would be. And yes, it's for a sleeper. The intake is for a divorce choke carburetor, and looks stock. Do you know of a sbc intake that would accommodate that head flow?

[@servediocylinderheads]

@@20alphabet Look up the baddest Chevy intake on my videos. I give before and after flows. Thanks

[@timothyarnott3584]

One more thing, i also like how the intake port keeps going up in flow.....not maxin out at .500, and flattening out, you have a STABLE port!!!....thats a better deal!!

[@servediocylinderheads]

It is very important!

[@timothyarnott3584]

@@servediocylinderheads yep, so ur hard work is showin nicely!!!

[@servediocylinderheads]

@@timothyarnott3584 Hard fought gains. Thanks

[@timothyarnott3584]

@@servediocylinderheads 👍keep doin what awesomeness you do........not many have ur prowess!!....PEACE to you sir!!

[@servediocylinderheads]

@@timothyarnott3584 Just stubborn...it may be that 25% German?

[@JayGuitars1]

G’day mate. Is there any reason you haven’t used a 1.88/1.60 valve combo?

[@servediocylinderheads]

Yes, specs called for stock valves! Thanks

[@servediocylinderheads]

Not stock valves for a bigger engine. Stock for 70's 318.

[@JayGuitars1]

@@servediocylinderheads ahh Righto!! 1980’s had bigger, shame you couldn’t slip them on.

[@servediocylinderheads]

@@JayGuitars1 A while ago I did up a set of 302 quench heads for this project, got them to 247cfm. Thanks

[@MoparMan-ff8fb]

for got how to get ahold of you for a tech question

[@servediocylinderheads]

[e-mail]

[@craigchiddo2794]

Charlie I figured out what to do with the crank and rods dv worked on offset grind the crank .040 use dvs rods and magnum pistons deck the block and use 85-90 heads it's the direction this project was supposed to go

[@servediocylinderheads]

Nah, stock stroke is fine.

[@craigchiddo2794]

@@servediocylinderheads crank needs grinding and you don't want to remove too much off the head or block

[@servediocylinderheads]

@@craigchiddo2794 David knows what to do. Thanks

[@TheProchargedmopar]

👍🏼💪🏼

[@gergatron7000]

"Aussie" Magnum head... Yes New Zealanders do refer to Oz as "West Island" 😂

[@servediocylinderheads]

I was not being disrespectful, I just don't know! I mix up N.Z. and Aussie. I am completely fried.

[@grahamm3559]

Rumour has it they were cast in both NZ and Australia so either one works 😅

[@gergatron7000]

@@servediocylinderheads no disrespect at all... Kiwis and Aussies have a healthy rivalry with each other but it's like we're sibling countries

[@BigChief454]

​@@grahamm3559rumors are just that, fact is all were cast in aus, nz as usual isn't viable with such a low volume market,hence why half of the nz population live in Aus

[@BigChief454]

More like us Aussies refer to nz as "sheep rapists who are just like their kiwi birds=full of shit and never fly back home FFS".

[@kevin2960]

Uae the 1968-1973 truck 318 intake. Its a single plane 2bbl intake

[@servediocylinderheads]

Good info, all the manifolds are done. Thanks

[@mikedimaio1237]

Impressive work considering those heads were never intended for racing.

[@servediocylinderheads]

They are perfect for what they were designed for. Thanks

[@slackthompson6984]

no prob , its ez right Chal.............

[@servediocylinderheads]

Piece of cake, only a couple hundred hours of work!

[@briantayes2418]

@@servediocylinderheads Thanks for bringing us along! What a trip.

[@servediocylinderheads]

@@briantayes2418 Like a bad trip from the 60's!

[@dalerobinson2986]

2.2 to 2.3 horse per cube???? WHAT?

[@servediocylinderheads]

Maybe I meant 2.2 hp per cfm?

[@dwaynehagle7445]

Intake to exhaust percentage.

[@servediocylinderheads]

Calculate it.