impressive results and looks to boot !

Looks serious.

Kevin

Very cool......VERY expensive and VERY impractical for a real world build. As with most of these Engine Masters engines in the last few years, they are great at doing what they are built for, which is a competition, but useless for much else.

Cool motor, what did it end up making for power? That would be great for a street rodder who doesn't want a belly button engine.
Regarding the statement in the article that the poly was the forerunner of the Hemi, I wonder what they mean? The Hemi was Chryslers first V8, introduced as a 331 in 1951, but the poly didn't come about until 1955. It was introduced as a cost saver, using only 1 rocker shaft per head, and thus a smaller head casting. All 3 generations of Hemi heads use 2 rocker shafts and have nothing in common with the poly.

Joel I thought the same thing but didn't want to give my age away. Hemi's were first. Lol

Exactly.
The 1955-* poly was a reduced-cost V8 for the non-hemi brand (Plymouth), and a cheaper replacement for the high-end DeSoto and Chrysler that previously got a sidevalve L6 (237, 251, 265).

"Other engines permitted in Vintage V8 competition — which are engine families introduced in 1954 or earlier — include the Nailhead Buick, Y-Block Ford, and Packard V8."
BTW: also legal for 1954: Olds Rocket, Cadillac, Studebaker (?).
Yeah, that 1955-67 poly fits right in there.

If the start date is really 1955, this allows Chevy small block, Pontiac, Rambler, and Lincoln Y block (assuming all hemis have their own class).

Too bad they couldn't find anyone who knew something about the engine.
Ooppsss - some of the experts were right in the room. But reporters have a long tradition of "why ask, when you can just make stuff up?" (also true of all political events).

Just a guess at the cam specs:
1. short duration
2. very high accel & vel (test: the nominal and .050" durations are very close together)
3. very high ratio rockers, like 2:1
4. very small LSA, like 100

The article said they were at 1.5hp/ci @ 6000 rpm.

I was wondering the same thing about the poly being the daddy of the hemi, born 3 years later?

1.5 hp per cube at 402 CID = 600+ HP... is that even remotly possible with those heads? Never heard even the most optomistic of flow numbers getting anywhere close to enough air flow?

I am watching engine masters this year but it is just interesting and not much of a competetion as each class only has a handfull of participants. Looks like a couple of last years winning gen III hemis came back almost un changed and beat the other hemi in the challenge.

https://m.facebook.com/polysuperpac

They are claiming 330 cfm on their "modified" heads.

Kevin

Holy smokes that's a decent amount of air! Never mind Edelbrocks for a street street small block get a set of these! I know I know, they've had a mountain of work but it's still impressive, the canted valves probably help as well

Well, the intake valve is canted, the exhaust is at 0 degrees.

I looked at the facebook pictures, the piston sitting at zero deck is the Sealed Power P814CP which has a compression height of 1.755". In a 9.600" block with a 6.123" rod, the piston should be 0.067 down in the hole. And in the late LA 9.577" block, it should be 0.044" down. So how did they get it to zero deck? Either stroked the crank or a 6.2" rod.???

BTW, I love those $1000+ rocker arms, I'm going to buy a set right after I buy their $700 intake manifold. But wait, the Enginemasters entry didn't use it.

Years ago I was posting about Poly head flow and Brian at IMM replied that he had worked on some much earlier, lost the flow sheets, but he remembered that the best results came from moving the intake port up as far as it would go. But to go from 210cfm to 330 is beyond my wildest expectations.

R.

I hope those guys haven't quit their day jobs. As much as I love the Poly motor it isn't worth all the hype they're trying to stir up.

Haha! You and Monte should get together and enter and go to the EMC. The EMC is like the ultimate gearheads "Science Fair". Only this fair/expo is applied to engines within a specific set of rules. Very few "Big" name builders dare to enter. What would happen to their "status" if they had their arses handed to them--and most of them would BTW. lol J.Rob

Yep.......Kaase and BES are no names........LOL.........and it seems like they win more than they lose. Oakley Motorsports also has an entry this year. VERY well known in Top Sportsman, Top Dragster and tractor pulling circuits

Why do I need to enter. I don't have an engine shop and have way more important things to do than build some one off type "science project" motor for a competition, that would be of no use to me otherwise. Just because you put a lot of stock in it, doesn't mean everybody should...............but none of that changes what I said. Tell us how "practical" it is to build a 600hp poly headed Mopar, that likely cost them 20K or better to build, if they had to pay for all that stuff. The EFI stack injection alone would be 10k. Being that it is a SAM engine, that is something that Judson can use to teach principles and show what can be done...........but in real life, who else would build that and for what?

I ultimately respect the EMC competitors, what they do and the power they pull from unusual combinations, but it is not something that appeals to me in the least bit to actually do.

I know how much time and money Phillip spent on his motor and I know Kaase spends a crazy amount of time and money on his projects. I can't do that. Kaase's shop manager is a friend of mine, see him at the races all the time. He told me on some of those motors, that they have tried dozens of cams, several sets of heads, different rod lengths, different pistons, etc. That's a LOT of time and money. Tinkering and that competition is just something that John likes to do, so it's a no expense spared hobby for him

Got your blinders on Monte? I said VERY FEW big name builders enter. You mentioned Oakley--not me. You're right BES,Kaase, and SAM do win, that is not in dispute here. I never disputed the practical aspect of anything EMC-EVER. It is a CHALLENGE-just like maybe you approach or regard your nitrous projects-nothing more. SAM's engine likely cost WAY more than what you have stated by a fair margin I would wager. I never said "Everyone on planet Earth HAS to regard the EMC as the greatest event ever" Christ you'd make someone a good wife 'cuz you sure no how to [censored]. J.Rob

p.s. I give up--you're right I am wrong. Please forgive me honey 'er Monty.

I love engine masters because of the diversity of engines. Are they on the raged edge of grenading? Sure are! But so are the majority of race cars you make your bread and butter off of Monte. Doesn't mean what you do isn't awesome and can't be applied to "useful" street/race engines. Guess they could all use a spec engine but that would lose its shine quickly

Exactly what is it, you have your panties in a wad about? All I said was the motor was very cool, very expensive and very impractical........points you in fact agree with........Then you drug me in, by saying that I should enter the contest with some other guy after HE made a comment. YOU are the one who drug me in this debate.......and I really don't even see what you are disagreeing with me about. Seems you are the one being the "woman" here.......starting the whole thing and just arguing to be arguing

Seems you are in a toxic relationship with all things MOPAR.

Listen up everyone! Don't do anything or have interest in

anything Monte Smith doesn't approve of or else! J.Rob

[ Moparts Family Site - Keep it Friendly ] are you talking about.......YOU started this and are just arguing in a circle that is going nowhere, nor making a point......other than you don't like me for some reason. I don't even know you, nor have we ever spoken that I know of

Cool engine! Sounds like it has a lot of squeeze during cranking.