ChopperScott wrote: ↑Thu Nov 17, 2022 10:00 am
Here’s an old classic single plane, with minor port work. Weiand X-CELelerator 7546…
I'm still working on that one...
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I like opening carb pad up,
This unmodified 2" 4 hole tapered spacer netted best overall power and lambda out of 20 dyno pulls.
That spacer gives better pressure recovery from the carb and makes it flow more.
Lloyd klem wrote: ↑Sat Nov 19, 2022 8:41 pm
I like the trick flow 'R' series.
Another late model manifold for big cubes and large heads. Looks like a competitive piece…
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Would be good for your engine imo.Has runner length for you rpm.Has tall plenum to not slam fuel charge into floor.At 399.00 priced reasonable for csa available imo.
Yes. It looks like it would be comparable to the SV2 I'm running now.
Do I see the Air Gap holding on to power to 6500? And some?
What are your thoughts on an open spacer rather than the 4 hole?
For that application, he used the dual plane. You can see how much more TQ it made between 3500 and 5000. Didn't pull it lower than 3500, but I'd bet it's dramatic. For a "resto" mod street driver, the dual plane is much better, with a mild rear gear and a 10 inch 3000 converter. If this was going to be set up for the "How would you go Faster thread?" The single plane would be much faster, because you'd gear appropriately and have a 5500+ rpm converter. I'd bet between the extra power up top, and the aggressive converter and gear, it would probably be a solid 1 second or more quicker and run several more mph. As far as the spacer, it liked the 4 hole to make that power. It lost with an open. Spacers are application specific, your results may vary.
That's what I thought this year too, but my SBC Air Gap bested my Single plane intake by .007 and the Air Gap 4 mph better than the single plane intake this year.
The et doesn't surprise me, the mph is unusual though. It's usually the other way around, Dual plane a touch quicker, and the single plane goes a tick slower, and gains a few mph, all else equal.
Do I see the Air Gap holding on to power to 6500? And some?
What are your thoughts on an open spacer rather than the 4 hole?
For that application, he used the dual plane. You can see how much more TQ it made between 3500 and 5000. Didn't pull it lower than 3500, but I'd bet it's dramatic. For a "resto" mod street driver, the dual plane is much better, with a mild rear gear and a 10 inch 3000 converter. If this was going to be set up for the "How would you go Faster thread?" The single plane would be much faster, because you'd gear appropriately and have a 5500+ rpm converter. I'd bet between the extra power up top, and the aggressive converter and gear, it would probably be a solid 1 second or more quicker and run several more mph. As far as the spacer, it liked the 4 hole to make that power. It lost with an open. Spacers are application specific, your results may vary.
That's what I thought this year too, but my SBC Air Gap bested my Single plane intake by .007 and the Air Gap 4 mph better than the single plane intake this year.
They are all rpm independent and engine demand regulated.We sold a 357 short late summer that ran 6.01-6.02 like clock work in 3200 Camaro.Kid didn't want to buy our intake or carb.He threw a Eddy rpm that was ported by one of the inner web spinners.It went 6.49 and lost 1000 rpm.He wanted to try our carb.It hurt it worse because it was to big for new rpm limits.He was certain from everything he read that it would still run in 6.00s of some sort.He even purchase our trans and converter.I could tell it was not happy on converter in garage.I think we could of went 6.49 with our setup and parachute fall out at the 330' .lol.He has now purchased a brodix hv intake.It has no area either .I doubt he gains much if any.
ChopperScott wrote: ↑Sun Nov 20, 2022 7:34 am
A closer look at the AFR 4811PM on my bench…
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I would want to get that afr in Mill and start cutting on that plenum.
That's what I was thinking too. Looks like there's a fair bit of gain there.
imo you can't get that manifold to big without ,cutting and welding on 430 plus engine.4.00" stroke is BBC territory.Look at area that comes in small BBC intakes.If 7000 rpm is peak goal then maybe that manifold could cut it maxed out.I always have been greedy and want more..
ChopperScott wrote: ↑Sun Nov 20, 2022 7:34 am
A closer look at the AFR 4811PM on my bench…
911C329F-980C-4E77-9672-EA1FD1ADF4CE.jpeg
37248F45-F24B-4257-A56D-347050E50154.jpeg
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Look at your second to last pic on runner csa at flange.Look how tight that is 1" in.Imho all your work needs to start in that area.Once you get it correct to gasket opening or a little bigger than.Then you know how much area you will need above that.I Wana take my die grinder or Mill and cut right through my phone and open that way up.lol
Another late model manifold for big cubes and large heads. Looks like a competitive piece…
32397608-C641-4CD0-8201-B379BF89207D.png
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What about the manifold in discussion going on my small cast iron headed 383,trying for the 10.0 club
This Trick Flow manifold looks trick out of the box real promising piece there ! I will be looking to see your results Steve
We will using r series on a 384 in near future.I have a hurricane intake with a ton of work that will be hard to beat.That being said I would of needed 20 hrs work on hurricane to get area the r series has out of box.
Lloyd klem wrote: ↑Sun Nov 20, 2022 10:21 am
I would want to get that afr in Mill and start cutting on that plenum.
That's what I was thinking too. Looks like there's a fair bit of gain there.
imo you can't get that manifold to big without ,cutting and welding on 430 plus engine.4.00" stroke is BBC territory.Look at area that comes in small BBC intakes.If 7000 rpm is peak goal then maybe that manifold could cut it maxed out.I always have been greedy and want more..
Depends on the combo. Just did a back to back on a pump gas 436 that made 770hp. The medium size intake made the most tq, peak HP, average TQ and carried higher than the biggest intake.
It's really quite amazing how a simple thread that I started so as to see what's out there and it what capacity and has grown into this.
There's some fairly intense work going on with these manifolds. I may be able to exploit some of that but more than likely, it'll the RPM Air Gap that needs some port matching and a few spacers to mess with.
Keep it coming folks. This may be useful resource tool moving forward. If it isn't already.
real promising piece there ! I will be looking to see your results Steve