Intake Manifold Porting Show ‘n Tell

[1980RS]

BRODIX HV1016
This is a manifold I've always wanted to try and never seen or read a test on. I own at least 10 dual planes and this one by far is the biggest casting with the largest runners from the carb surface. The casting quality is also the best I own. The divider is almost completely gone as cast.

The ports come cast small (stock double hump size) at the exit. The ports can be easily opened up to FelPro 1207+ if desired with no worries of casting issues. The cross sectional area is tapered to the exit from the common open area. The picture is a new FelPro 1206 and there is still taper in the runner once it starts being a runner from the open area. Nowhere in the manifold is there an area with less cross sectional area as the runner as it works its way to the exit. You can see the taper in all the runners in the pictures. It "looks" much better than other manifolds it will be fun to see how it runs.

Some years ago one of the magazines did a dual plane intake and I think the Brodix was a lot better than the Air Gap as I remember. The 1016 is a very good intake that port matches to almost any SBC head.

[ChopperScott]

AFR Eliminator 4811 with clover leaf removed. Hers's a short video with a closer look...

https://youtube.com/shorts/-Uz-WbJF3Ls?feature=share

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[skinny z]

BRODIX HV1016
This is a manifold I've always wanted to try and never seen or read a test on. I own at least 10 dual planes and this one by far is the biggest casting with the largest runners from the carb surface. The casting quality is also the best I own. The divider is almost completely gone as cast.

The ports come cast small (stock double hump size) at the exit. The ports can be easily opened up to FelPro 1207+ if desired with no worries of casting issues. The cross sectional area is tapered to the exit from the common open area. The picture is a new FelPro 1206 and there is still taper in the runner once it starts being a runner from the open area. Nowhere in the manifold is there an area with less cross sectional area as the runner as it works its way to the exit. You can see the taper in all the runners in the pictures. It "looks" much better than other manifolds it will be fun to see how it runs.

Dual plane! Now we're talking.
With a ten dual planes in your inventory, I'd think you'd have an Edelbrock Performer RPM Air-Gap (7501)? If you do, how does it compare?

[BadSS]

Back before the internet, there was a circle track magazine that compared the Brodix HV1016 dual plan with a Victor Jr on a fairly healthy 406. Pretty sure it was a solid mechanical cam (in the 250s or 260s?) and an 850 DP, but that's about all I recall. I bought the rag and pretty sure I still have it, but it's squirreled away in a box somewhere or I'd break it out and give the numbers they reported. Long story short, the 1016 with a Street Sweeper spacer had a good bit more power down low and made a few more HP than the Victor Jr at peak as well. When they put a spacer on the Victor Jr, it did make a little more HP at the very top, but still gave away a noticeable amount of midrange power.

Seeing that, I was surprised to find that the intake was (is) only 4.55" tall and it would fit under the stock hood of a G-body Monte Carlo with a 1/2" tall nitrous plate. That intake ended up being my go to for anything between 400 and 500HP and running a small kit. I had a good friend that was running a Victor Jr atop a pump gas 406 making about 475-480 FWHP in his Monte Carlo with a TH350, 2600 stall speed converter, and 3.73 gears. He needed more converter for that combination, but when we swapped over to the Brodix 1016 with the street sweeper, it went from running 12.30s to 12-teens. This was being done for testing purposes, but he ended up buying the 1016 and spacer from me - he said he would have bought them even if it had run the same times purely on the added throttle response.

I saw where Eric had tested one and said it didn't perform that well compared to the other dual planes, but like mtrhead said, the ports were cast curving down to fit a small 1204 intake gasket. However, the native port is more like a 1206 once you "port-match" going in about 1.5-in. Most of the engines I used them on had 1206 sized heads. I noticed there appears to be a little difference in how the new ones look in the divider area (or lack there off). This is a picture from the 2002 article linked below and looks like how I remember them looking from back in the 90s.


This also may be the article that 1980RS referenced - I can't believe it's still out there. I attached a spreadsheet I did many years ago with delta comparisons.
https://www.motortrend.com/how-to/sucp- ... -benefits/

[Bob Hollinshead]

Back before the internet, there was a circle track magazine that compared the Brodix HV1016 dual plan with a Victor Jr on a fairly healthy 406. Pretty sure it was a solid mechanical cam (in the 250s or 260s?) and an 850 DP, but that's about all I recall. I bought the rag and pretty sure I still have it, but it's squirreled away in a box somewhere or I'd break it out and give the numbers they reported. Long story short, the 1016 with a Street Sweeper spacer

what is a street sweeper spacer?

[mt-engines]

Back before the internet, there was a circle track magazine that compared the Brodix HV1016 dual plan with a Victor Jr on a fairly healthy 406. Pretty sure it was a solid mechanical cam (in the 250s or 260s?) and an 850 DP, but that's about all I recall. I bought the rag and pretty sure I still have it, but it's squirreled away in a box somewhere or I'd break it out and give the numbers they reported. Long story short, the 1016 with a Street Sweeper spacer

what is a street sweeper spacer?

Ita like a supersucker for dual plane intakes

[Tom68]

Back before the internet, there was a circle track magazine that compared the Brodix HV1016 dual plan with a Victor Jr on a fairly healthy 406. Pretty sure it was a solid mechanical cam (in the 250s or 260s?) and an 850 DP, but that's about all I recall. I bought the rag and pretty sure I still have it, but it's squirreled away in a box somewhere or I'd break it out and give the numbers they reported. Long story short, the 1016 with a Street Sweeper spacer

what is a street sweeper spacer?

Screenshot 2023-04-25 145911.jpg

[ChopperScott]

AFR Eliminator 4811 with clover leaf removed. Hers's a short video with a closer look...

https://youtube.com/shorts/-Uz-WbJF3Ls?feature=share

I finished the match on this one with a burr finish. It'll be ran on a set of AFR 220 Eliminator heads with an AFR 6901 gasket...

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[perfconn]

[attachment=0]IMG_20230202_120848.jpg[/attachment]SB2.2 intake

[mt-engines]

AFR Eliminator 4811 with clover leaf removed. Hers's a short video with a closer look...

https://youtube.com/shorts/-Uz-WbJF3Ls?feature=share

I finished the match on this one with a burr finish. It'll be ran on a set of AFR 220 Eliminator heads with an AFR 6901 gasket...

IMG_8027.JPG

IMG_8104.JPG

IMG_8105.JPG

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How much data do you have on the combo unported vs ported? How do you know if you are wasting your time or not? And whats with the 400 pictures without any results? How do you know the manifold needed that much work?

[ChopperScott]

That’s for a high revving 305 with fuelie heads and a 3/4 race cam. It’ll smoke a tire for blocks at a time.

[1980RS]

AFR Eliminator 4811 with clover leaf removed. Hers's a short video with a closer look...

https://youtube.com/shorts/-Uz-WbJF3Ls?feature=share

I finished the match on this one with a burr finish. It'll be ran on a set of AFR 220 Eliminator heads with an AFR 6901 gasket...

IMG_8027.JPG

IMG_8104.JPG

IMG_8105.JPG

IMG_8106.JPG

How much data do you have on the combo unported vs ported? How do you know if you are wasting your time or not? And whats with the 400 pictures without any results? How do you know the manifold needed that much work?

I see nothing wrong with what Chopper does showing off his intake work, hell it looks better than mine does. As for performance, most intakes out of the box are worth a darn, the 2925 Eddy is a prime example of that. I say just run'em after you port them and see what happens. It's not like were racing a P/S class or anything like that.

[skinny z]

It's not like were racing a P/S class or anything like that.

P/S? As in Poor Stock? That's my class!

[mt-engines]

I finished the match on this one with a burr finish. It'll be ran on a set of AFR 220 Eliminator heads with an AFR 6901 gasket...

IMG_8027.JPG

IMG_8104.JPG

IMG_8105.JPG

IMG_8106.JPG

How much data do you have on the combo unported vs ported? How do you know if you are wasting your time or not? And whats with the 400 pictures without any results? How do you know the manifold needed that much work?

I see nothing wrong with what Chopper does showing off his intake work, hell it looks better than mine does. As for performance, most intakes out of the box are worth a darn, the 2925 Eddy is a prime example of that. I say just run'em after you port them and see what happens. It's not like were racing a P/S class or anything like that.

I was just asking what the results are. And why it needed so much work stock vs ported?

Yesterday we tested a torker vs Chinese Air gap on a 355. The Chinese airgap was worth 40hp. Now what if I spent 15 hours porting the torker and it gained 30.. you'd say that was a heck of a gain.. but an out of the box chinese intake still blows it out of the water untouched.

[ChopperScott]

The Torker is about as good as that X-CELerator on page 1 that I ported. A conversation piece.

All sarcasm aside, that AFR intake will be run on a 421, 13.5:1, with AFR Eliminator 220 heads, a custom grind, a 1050 IRD Racing carb, and spraying 300hp through an NX plate.