Something else I found. This time on intake manifolds
- Thread starter pittsburghracer
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yellow rose
Overnight Sensation
Like I always say...why do you put a corner anywhere in a system and if you do, what do you do with it?
It makes no sense from a performance standpoint. Corners are bad, and any intake with a bunch of corners in it is a loser.
It makes no sense from a performance standpoint. Corners are bad, and any intake with a bunch of corners in it is a loser.
The science of fluid flow dynamics is not new. The use of computer modeling to provide visual representation of the fluid flow has been used in aircraft and automobile design for a number of years. The Chrysler Airflow was the first use of fluid flow dynamics in automobile design. Chrysler also used fluid flow dynamics on intake manifold design which resulted in the Sonoramic (Long Ram) induction system and the shorter cross ram induction. I would like if they could get a hold of those two manifolds and apply the computer modeling to them to see how well the slide rule engineers accomplished their goals.
SS Lancer
Well-Known Member
Good info [ Yellow Rose ] we have the same terminology in the Water industry where rookies put alot of bends in big pipe when other measures can be used.
pishta
I know I'm right....
Always thought the EFI adapter "power elbows" would bias the rear cylinders. just on the way the air would come in and stack up on the rear wall as in the pic with the dark blue spaghetti in the forward ports. When I fashioned my Slant intake, I used the Ford 5.0 "side entry" style where the air goes in and makes the same 180 for all the cylinders, so they are all equally hindered. It was more equalized than the "one ended" option in my mind.
Nice read. Also shows why spacers are or can be power makers.
justinp61
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the Drag Pack intake was my first thought.
autoxcuda
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Geez these nascar intakes look very similar across the manufacturers. There seems to be a restrictor and open motor version of each at minimum. The pics below are probably not apple to oranges.
Ford
Toyota
GM
Ford
Toyota
GM
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famous bob
mopar misfit
I sure wish chrysler would have made spread port heads for the r/b wedge engines , then maybe they`d have bigger flow, closer to the rat heads , maybe even staggard valves .
yellow rose
Overnight Sensation
That’s the Predator head. You still have the 4.840 bore spacing issue, along with the power eating skirted block.
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They discuss that manifold as well as the one Chrysler made for the slant 6 in "Scientific Design of Exhaust & Intake Systems" by Phillip H Smith and John C Morrison.
They stated a 10% increase in comparison over conventional manifolding.
furrystump
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Interesting, you could dump the dead space and definitely use the divider. Dry intake.
famous bob
mopar misfit
Didn`t know that , kinda wild , too bad there werent more of them and for a smaller bore !-
How well do they flow ?
famous bob
mopar misfit
that bore size kinda sucks , why does the skirted block eat h.p. ?
Those are Poly 318 Heads. They are a unique design for sure.
yellow rose
Overnight Sensation
You can’t get the oil off the crank with the skirts hanging down there. That’s was a HUGE flaw in the 99 Hemi. I know what work went into getting a pan on that thing that worked. And what a PITA it was to deal with.
autoxcuda
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In the notes I have from Bob Tarozzi he did a lot of work starting in ‘71 with KB on Hemi oiling.
He pitched a different bore spacing and raised cam TF block decades later... NHRA didn’t go for it.
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