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Which of these two 440 intakes would be best? #3033657
04/14/22 07:12 PM
04/14/22 07:12 PM
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San Jose,CA
migsBIG Offline OP
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Normally I would post a question like this in the race forum, but I’m looking for a good street combo. I was able to trade for an older built 440 headed Indy engine that has about 550-600hp and looking to drop it in my 1970 Cuda street car. Recently a couple of friends decided they did not need these intakes and I bought them for putting one on this engine. The first intake is an Edelbrock RPM that is mostly stock. The other intake is an M1 single plane. I plan to run a carb to get used to engine and get it tuned for hood driving, then upgrade to fuel injection when the budget gets a little bigger. It’s a pump gas engine so it work fine, but unsure of performance or even if either will fit properly under the stock Cuda hood. What do you guys suggest?

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Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033661
04/14/22 07:25 PM
04/14/22 07:25 PM
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I have dyno tested those two intakes and a Torker 2 on CA pump swill years ago with the same Holley List 80496 950 HP with no changes to the carb or tune up.
The RPM was better on HP and torque below 5500 RPM at WOT: up: The Torker 2 was the worst: down:
Most of the single plane intakes I've owned and driven on the street are pretty lazy to light throttle response below 2500 RPM down work
The dual planes are way better below 2500 RPM at light part throttle driving on the street shruggy

Last edited by Cab_Burge; 04/14/22 07:27 PM.

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Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033666
04/14/22 08:05 PM
04/14/22 08:05 PM
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elmor353 Offline
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For a street engine, I would use the Performer RPM, hands down over the single plane.

Re: Which of these two 440 intakes would be best? [Re: elmor353] #3033668
04/14/22 08:36 PM
04/14/22 08:36 PM
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19swinger70 Offline
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The fuel injection system will like the single plane better.


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Re: Which of these two 440 intakes would be best? [Re: elmor353] #3033673
04/14/22 09:08 PM
04/14/22 09:08 PM
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San Jose,CA
migsBIG Offline OP
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Ok, so I know the RPM was good for torque intake, but I had no idea on what this M1 application is good for. Is the M1 good for anything or is it a swap meet item?

Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033691
04/14/22 09:58 PM
04/14/22 09:58 PM
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Single-plane for street RPM would be my choice; ran them on healthy street RBs twice so far.
That said, I had an Indy-top-end 512" RB in a Duster with a fairly loose 3500 converter, and it drove fine with 3.91s and 3.23s.
There's an intersection of car weight, gear, stick or higher stall converter and of course usage, where there's a cross-over.
I've heard that at EFI is better on a single-plane, but it's easy to swap them on BB Mopars, so hang on to both & experiment.

Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033781
04/15/22 09:09 AM
04/15/22 09:09 AM
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How important is throttle response? How tight is the converter? And what is the rear ratio? The dual plane will just plain respond and drive better in normal street driving with a tight street converter. It will probably give up some ponies up top. If the converter is looser than stock, or with lower rear gears, the extra RPM will dilute the advantages of the DP.


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Re: Which of these two 440 intakes would be best? [Re: 19swinger70] #3033785
04/15/22 09:33 AM
04/15/22 09:33 AM
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furious70 Offline
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Originally Posted by 19swinger70
The fuel injection system will like the single plane better.

I've run an rpm perf on a efi turbocharged big block for a decade and had very good distribution and response. A friend of mine tried 4 different intakes, single and dual planes, and the DP's were the best. Not sure why this continues to be spread.


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Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033788
04/15/22 09:43 AM
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Both will work okay, try them both and see which one you prefer.

Re: Which of these two 440 intakes would be best? [Re: AndyF] #3033797
04/15/22 10:20 AM
04/15/22 10:20 AM
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I run an M1 on my 440 with a Dominator carb Steert driver.Even cold it fires up but with no choke you have to keep the idle up.I did run the Holley street dominator Its the best all around intake ever for BBs.Rocky


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Re: Which of these two 440 intakes would be best? [Re: DaveRS23] #3033846
04/15/22 02:21 PM
04/15/22 02:21 PM
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Originally Posted by DaveRS23
How important is throttle response? How tight is the converter? And what is the rear ratio? The dual plane will just plain respond and drive better in normal street driving with a tight street converter. It will probably give up some ponies up top. If the converter is looser than stock, or with lower rear gears, the extra RPM will dilute the advantages of the DP.


Not sure on the converter specks as I got the transmission for the engine, but the trans was built for this engine and a 6apk intake. I would run either a 3:23 since the car is not a drag racer and stoplight duels are minimal because the police in my areas more abundant than taxes. Probably fun cruise nights, maybe once a year to track party. Still, thinking MI could be used for FI or maybe that new intake from Trickflow.

Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033853
04/15/22 02:55 PM
04/15/22 02:55 PM
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Originally Posted by migsBIG
Originally Posted by DaveRS23
How important is throttle response? How tight is the converter? And what is the rear ratio? The dual plane will just plain respond and drive better in normal street driving with a tight street converter. It will probably give up some ponies up top. If the converter is looser than stock, or with lower rear gears, the extra RPM will dilute the advantages of the DP.


Not sure on the converter specks as I got the transmission for the engine, but the trans was built for this engine and a 6apk intake. I would run either a 3:23 since the car is not a drag racer and stoplight duels are minimal because the police in my areas more abundant than taxes. Probably fun cruise nights, maybe once a year to track party. Still, thinking MI could be used for FI or maybe that new intake from Trickflow.


What type of fuel injection are you thinking of swapping to, port injection or a throttle body type ?


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Re: Which of these two 440 intakes would be best? [Re: furious70] #3033854
04/15/22 02:57 PM
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Originally Posted by furious70
Originally Posted by 19swinger70
The fuel injection system will like the single plane better.

I've run an rpm perf on a efi turbocharged big block for a decade and had very good distribution and response. A friend of mine tried 4 different intakes, single and dual planes, and the DP's were the best. Not sure why this continues to be spread.


Throttle body or port efi ?


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Re: Which of these two 440 intakes would be best? [Re: JohnRR] #3033863
04/15/22 03:24 PM
04/15/22 03:24 PM
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To many variables to pick which will work the best, each one will require a different set up

Last edited by cudaman1969; 04/15/22 03:25 PM.
Re: Which of these two 440 intakes would be best? [Re: JohnRR] #3033896
04/15/22 05:30 PM
04/15/22 05:30 PM
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Throttle body. Sounds like the RPM is going to be perfered intake and if I decide to change to a single plane, then I’ll choose one from piles avalible instead of the cheapest manifold on Craigslist. Thank you all for responding, I appreciate the feedback. up

Last edited by migsBIG; 04/15/22 06:10 PM.
Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3033912
04/15/22 06:13 PM
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Originally Posted by migsBIG
Originally Posted by DaveRS23
How important is throttle response? How tight is the converter? And what is the rear ratio? The dual plane will just plain respond and drive better in normal street driving with a tight street converter. It will probably give up some ponies up top. If the converter is looser than stock, or with lower rear gears, the extra RPM will dilute the advantages of the DP.


Not sure on the converter specks as I got the transmission for the engine, but the trans was built for this engine and a 6apk intake. I would run either a 3:23 since the car is not a drag racer and stoplight duels are minimal because the police in my areas more abundant than taxes. Probably fun cruise nights, maybe once a year to track party. Still, thinking MI could be used for FI or maybe that new intake from Trickflow.


Big block Mopar intakes are probably the easiest intakes there are to change. So when injection time comes, swapping them would be a snap. Having said that, with 3.23s and primarily street duty, for now I would run the dual plane. twocents


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Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3035002
04/19/22 10:56 AM
04/19/22 10:56 AM
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Originally Posted by migsBIG
Throttle body. Sounds like the RPM is going to be perfered intake and if I decide to change to a single plane, then I’ll choose one from piles avalible instead of the cheapest manifold on Craigslist. Thank you all for responding, I appreciate the feedback. up


Throttle body is like using a carb so the RPM would be my choice on a street car.


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Re: Which of these two 440 intakes would be best? [Re: migsBIG] #3035007
04/19/22 11:07 AM
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On your deal I would run the RPM for the carb and switch to the MI when you change over to fuel injection.
All the EFI motors I've built including direct port EFI as well as throttle body EFI installation instruction said to use a single plane intake, SB, BB and Hemiroid motors with two dry throttle bodies shruggy
Good luck on your new venture up wrench


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