383 build.
#3187610
10/30/23 12:16 PM
10/30/23 12:16 PM
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Joined: Oct 2022
Posts: 15
Campbellsport, ,Wi
Dave S
OP
member
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OP
member
Joined: Oct 2022
Posts: 15
Campbellsport, ,Wi
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A friend and I are looking to build up his stock numbers match 71 383 in his four-speed Road Runner. He's hoping for a relatively mild build with over 400 horsepower. It was rebuilt the stock specs about 10 years ago .Was thinking of taking some weight off the engine by using 440 Source Stealth heads, aluminum water pump and housing., TTI header's. It's an air grabber car and he is wondering what intake utilize the factory air grabber. So is anyone have any ideas for intake manifold and camshaft ideas?. And how are those heads Will work on a 383?? Thanks
Last edited by Dave S; 10/30/23 12:18 PM.
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Re: 383 build.
[Re: Dave S]
#3187623
10/30/23 12:52 PM
10/30/23 12:52 PM
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Joined: Jan 2012
Posts: 2,637
Stuttgart, Arkansas
rickseeman
master
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master
Joined: Jan 2012
Posts: 2,637
Stuttgart, Arkansas
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Sounds like you're on the right track. Just get some measurements from the stock intake before you shop intakes and make sure the new one will work with the air grabber. The 440 Source heads should be good and they offer a good range of cams. His goals are easily obtainable. Enjoy the build.
2011 Drag Pak Challenger
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Re: 383 build.
[Re: rickseeman]
#3187642
10/30/23 01:49 PM
10/30/23 01:49 PM
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Joined: Jan 2003
Posts: 9,872
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,872
Weddington, N.C.
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use the KB/silvolite high compression pistons, assuming 10.1 use the performer RPM (if it fits) or a good ol' holley street dominator.
For a mild stock converter (and assuming a hydraulic Flat tappet) and 3.23-3.55 gears use the Crower 32242 222/234 .496/.486 lift on 112 in at 107
For a hot street motor with a stick or 3000 stall and 3.91 or better gears, run the (Bullet) Ultradyne 231/239 @.050 .490/501 lift on 108 in at 102, this is a total badass cam for any hot street mopar without being too radical.
Last edited by Streetwize; 10/30/23 01:51 PM.
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Re: 383 build.
[Re: Dave S]
#3187768
10/31/23 12:07 AM
10/31/23 12:07 AM
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Joined: Feb 2016
Posts: 200
PA
Scully
enthusiast
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enthusiast
Joined: Feb 2016
Posts: 200
PA
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I was thinking a good port matched Mopar M1 intake if I could find one. Any thoughts? A port match is probably one of the least important things in building a good street engine, the color of the valve covers is almost as important.
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Re: 383 build.
[Re: Dave S]
#3187769
10/31/23 12:08 AM
10/31/23 12:08 AM
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Joined: Feb 2003
Posts: 10,201
Someplace you aren't
SomeCarGuy
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 10,201
Someplace you aren't
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Street Dominator ripped in my four speed 383 car. Some will say the CH4B is the choice, you need to explore the height issue for the AG. Dont let anybody talk you into less than a 750 carb. For some reason people think it will kill low end- it won’t. Not on a stock internal engine and certainly not on a built one.
I want my fair share
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Re: 383 build.
[Re: Dave S]
#3187773
10/31/23 12:44 AM
10/31/23 12:44 AM
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Joined: Jun 2014
Posts: 3,164
Md.
carnut68
master
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master
Joined: Jun 2014
Posts: 3,164
Md.
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I was thinking a good port matched Mopar M1 intake if I could find one. Any thoughts? I would use an old TM6, Torker 383 or Torker II b/4 an M1.
America First!
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Re: 383 build.
[Re: BigBlockGTS]
#3187839
10/31/23 12:24 PM
10/31/23 12:24 PM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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I would use the low rise Holley Street Dominator on this build. Very low height (close to the stock intake I believe) and it makes a ton of power for what it is. It is a single plane but no real torque loss. It is the best shot at working with the air grabber with little to no mods. Anything taller than stock with a 383 air cleaner base is going to cause the base to crush the rubber gasket harder and potentially hit the hood, the OP is lucky that there is more height under the 71 Air grabber hood but on a 69 Dodge or Plymouth that is not the case. That said I was able to run the DP4B , low deck version of the CH4B , both of which are a 1/2" taller , I didn't touch the hood but the member I recommended he run the CH4B on his 69 RR/GTX did ding his hood. Only the standard performer and the old M1 dual plane are the same height as stock ,.. that I know of. The alternative is to run the tallest you want , performer RPM , but to modify the base to clear , there are modified bases floating around waiting to be modified more for the likes of the RPM ... I have been sitting on a modified 69 base for decades ...
running up my post count some more .
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Re: 383 build.
[Re: Dave S]
#3187840
10/31/23 12:27 PM
10/31/23 12:27 PM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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I was thinking a good port matched Mopar M1 intake if I could find one. Any thoughts? I assume you are talking about the no longer made M1 dual plane that was an exact copy of the 70 cast iron single 4 bbl ? That is definitely lighter and you can do a lot more than port match , but that will be $$$$ . The performer RPM with a modified air grabber baseplate would be better.
running up my post count some more .
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Re: 383 build.
[Re: Dave S]
#3188217
11/02/23 09:23 AM
11/02/23 09:23 AM
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Joined: Jan 2003
Posts: 12,037
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,037
Benton, IL.
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Are there after market bases available for the Air Grabber? If so, you can fab a drop base air cleaner base into one. And then, maybe drop the K down with spacers. 1/2" is usually easy enough. Doing one or possibly both of those things will allow you to run just about any intake that you want. I did that on my Cuda and have an Indy intake and Holley Dominator carb under the Shaker. Actually, the Dominator is IN the Shaker. 
Master, again and still
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Re: 383 build.
[Re: JohnRR]
#3188439
11/03/23 10:03 AM
11/03/23 10:03 AM
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Joined: Jan 2003
Posts: 4,712
Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,712
Moved to N.E. Tennessee
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I would use the low rise Holley Street Dominator on this build. Very low height (close to the stock intake I believe) and it makes a ton of power for what it is. It is a single plane but no real torque loss. It is the best shot at working with the air grabber with little to no mods. Anything taller than stock with a 383 air cleaner base is going to cause the base to crush the rubber gasket harder and potentially hit the hood, the OP is lucky that there is more height under the 71 Air grabber hood but on a 69 Dodge or Plymouth that is not the case. That said I was able to run the DP4B , low deck version of the CH4B , both of which are a 1/2" taller , I didn't touch the hood but the member I recommended he run the CH4B on his 69 RR/GTX did ding his hood. Only the standard performer and the old M1 dual plane are the same height as stock ,.. that I know of. The alternative is to run the tallest you want , performer RPM , but to modify the base to clear , there are modified bases floating around waiting to be modified more for the likes of the RPM ... I have been sitting on a modified 69 base for decades ... A 70-72 440 air cleaner base would probably gain enough clearance for that intake and maybe enough for a Holley SD. explain-70-440-4bbl-oval-air-cleaners-w-air-grabberair-grabber-69-70-383-440-base-questionair-grabber-difference 383-440
Last edited by GomangoCuda; 11/03/23 12:15 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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