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Thread: Rare Possible Prototype M1 2-bbl Intake Manifold

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    98Dak408's Avatar
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    Default Rare Possible Prototype M1 2-bbl Intake Manifold

    A customer Keith dropped off an intake manifold in which the OEM fuel rails wouldn’t fit. I’d never seen this intake before. It looks like an M1 2-bbl but there are several differences:

    1. It appears to have a Chrysler part number but ii is not designated with a “P” part number: 53031728AA
    2. The arrangement of mounting bosses is different from the Mopar aftermarket 2-bbl.
    3. The plenum is not as tall.
    4. The intake ports at the flange are extremely square and accurate.
    5. And most notably, the injector bungs are cast and machined at a 23-degree angle where the OEM and other aftermarket intakes (Airgap, M1 4-bbl, and M1 2-bbl) have a 13-degree angle.
    6. There are other minor differences as well.

    I wonder if this intake may have been a prototype that found its way out of the scrap heap back in the day?

    To make fuel rails fit beneath the 52mm throttle body linkage without a spacer, I used the shorter Hemi 30# injectors, and sunk the injector ports further into the fuel rail. The 6AN fuel rails were also machined with 8AN ports for 8AN fittings. This intake was more of a challenge due to the extreme injector angle and short plenum.












    This is going in a Jeep with a 402 stroker:




    The engine was built by Godfather Racing in Fraser, Michigan.

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    slammedR/T's Avatar
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    To bad Dan Bennett doesn't visit anymore, I bet he would know or could look it up.
    This signature has been deleted thanks to photobucket!

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    Yeah, I'd be interested to know. I tried searching the web to no avail.
    I've spent most of my money on women, booze, and my truck. The rest of the money was wasted!

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    Wild for sure.
    It’s amazing what can find it’s way into the wild.
    I have a set of prototype aluminum heads on my ’96.Supposedly only 5 made,and who knows where the others are.

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    I'm guessing the injector angle is to get the injector spraying directly to the valve. Which is preferred I'm told.
    If you haven't lived for something, you'll die for nothing.

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    Quote Originally Posted by slammedR/T View Post
    To bad Dan Bennett doesn't visit anymore, I bet he would know or could look it up.
    He's over on Facebook. Ask there.

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    kota360's Avatar
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    Richard, are the intake runners longer on this intake?
    They look to be, maybe an optical illusion though due to shorter plenum?
    Edelbrock Magnum heads, Harland-Sharp 1:6 RR, Jomar Performance Ultra-Lite Stud Girdle, SoutheastPerformance Sheet Metal Valve Covers, Custom Hyd Roller from Reed Cams, Mopar M-1 2 Brl Intake, Hughes Stage 1 TB, JBA SS Headers, Jacobs Electronics Pro Street Ignition System and Wires, MBRP 'Cuda Style Exhaust, Western Chassis 2" drop front and rear, Edelbrock IAS Shocks, Terry DeLong Pro-Glass Shaker Hood

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    Richard, are the intake runners longer on this intake?
    They look to be, maybe an optical illusion though due to shorter plenum?
    I didn't actually measure them but they look to be the same. Yes, I think the shorter plenum just makes them look longer.
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    GoFastGray's Avatar
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    Interesting!
    I noticed the Injector angle from the pics right away.
    What finish is on the casting? Come that way or is that like a chrome powdercoat?
    12.10@106@Famoso Raceway

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    Interesting!
    I noticed the Injector angle from the pics right away.
    What finish is on the casting? Come that way or is that like a chrome powdercoat?
    Yeah, the customer had it powder coated silver.
    I've spent most of my money on women, booze, and my truck. The rest of the money was wasted!

    Smartphones are a menace to society and are creating a zombie apocalypse!

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    That is a strange one, I bet he was glad you could make it work for him.
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    Here is my "Hen's Tooth" M1, that Richard and I have been conversing about. Going to measure the height of where the Throttle Body sits on both the Kegger, and M1 to see what size spacer I need.

    ***Powder-Coated Clear after glass-beaded in last photo.***

    M1 Intake. (2).jpg
    M1 Intake. (1).jpg
    M1 Intake. (3).jpg
    M1 Intake.jpg
    Last edited by Corey; 07-31-2018 at 07:03 PM.
    DRTC #1176

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    98Dak408's Avatar
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    Here is my "Hen's Tooth" M1, that Richard and I have been conversing about. Going to measure the height of where the Throttle Body sits on both the Kegger, and M1 to see what size spacer I need.
    Yeah, same intake. When measuring be sure the injector bung distance is about the same. Otherwise, better to place a throttle body on the M1 and measure directly off the intake with the fuel rails in place.
    I've spent most of my money on women, booze, and my truck. The rest of the money was wasted!

    Smartphones are a menace to society and are creating a zombie apocalypse!

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    Corey's Avatar
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    Will do. I always appreciate your help and replies to my e-mails.
    DRTC #1176

    2000 Bright White CC (1/553)
    Dyno'ed 07/05/13 (126,000 Miles) 230 Hp / 308 Tq
    14.6 @ 93 mph (2.18 60 ft.), 4130 lbs.(1/2 tank gas)
    Truck Pictures --> http://smg.photobucket.com/albums/v9...Clough/Dakota/

    1985 Kawasaki GPz550
    2003 SV650S (Race)
    1973 W100 Powerwagon


    Mater: I don’t need to know where I’m goin’, I just need to know where I been!

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    No problem Corey. Use wood or metal spacers of some type to stack up between the throttle body and intake to get an even and accurate measure of height.
    I've spent most of my money on women, booze, and my truck. The rest of the money was wasted!

    Smartphones are a menace to society and are creating a zombie apocalypse!

    If you don't like me on the phone get off the road!




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    Corey's Avatar
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    For added information, if anyone comes across this intake in the future, the Throttle Body mounting surface is 1" shorter from the stock Kegger. I looked at all of the TB Spacers on Summit that apply to our trucks, e-mailing the manufacture and asking for the bore diameters, and all state they were made for stock TB Bores. None would give an actual bore measurement. Customer Service? Nope!!! I have a 50 mm TB, and will be sending it out to HiPoTek to be enlarged to 52 mm, and will enlarge the TB Spacer.

    Trans-Dapt Open Spacer 2615.jpg



    Interesting how the stock right rear fuel rail mount was made over part of the part number. I too, am running HiPoTek's Fuel Rails.

    IMG_7194.jpg
    M1 Intake. (2).jpg
    M1 Intake. (4).jpg
    DRTC #1176

    2000 Bright White CC (1/553)
    Dyno'ed 07/05/13 (126,000 Miles) 230 Hp / 308 Tq
    14.6 @ 93 mph (2.18 60 ft.), 4130 lbs.(1/2 tank gas)
    Truck Pictures --> http://smg.photobucket.com/albums/v9...Clough/Dakota/

    1985 Kawasaki GPz550
    2003 SV650S (Race)
    1973 W100 Powerwagon


    Mater: I don’t need to know where I’m goin’, I just need to know where I been!

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    Corey's Avatar
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    Added info: The Trans-Dapt Spacer above arrived, and has bores of 50 mm. Easy to machine to 52 mm when the time comes.
    DRTC #1176

    2000 Bright White CC (1/553)
    Dyno'ed 07/05/13 (126,000 Miles) 230 Hp / 308 Tq
    14.6 @ 93 mph (2.18 60 ft.), 4130 lbs.(1/2 tank gas)
    Truck Pictures --> http://smg.photobucket.com/albums/v9...Clough/Dakota/

    1985 Kawasaki GPz550
    2003 SV650S (Race)
    1973 W100 Powerwagon


    Mater: I don’t need to know where I’m goin’, I just need to know where I been!

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