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383 to 440 #148477
11/10/08 04:51 PM
11/10/08 04:51 PM
Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP Offline OP
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CYACOP  Offline OP
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SW Fla.
Im thinking on getting a core engine and rebuilding it over time for my 71 RR. Currently has a 383 but may go to 440 depending on what extras I would need to get. My 383 currently has AC. If I go with a 440 what off my 383 wont fit other than the intake manifold? Will my exhaust manifold height be the same? Actually 440's seem to be more readily available than 383's in this area as cores. Suggestions?
Thanks

Re: 383 to 440 [Re: CYACOP] #148478
11/10/08 05:00 PM
11/10/08 05:00 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
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go with the 440, much more cubes you'll be glad you did. the ex manifolds will be moved upward(at a 45 angle) a slight bit. others will chime in. edit: mounts,bellhousing face,oil pan the same. A/C brackets different.

Last edited by RapidRobert; 11/10/08 05:17 PM.

live every 24 hour block of time like it's your last day on earth
Re: 383 to 440 [Re: RapidRobert] #148479
11/10/08 05:13 PM
11/10/08 05:13 PM
Joined: Jun 2006
Posts: 5,166
CT
GTX MATT Offline
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I can find 5x as many 440s as 383s for sale. And people arent asking dirt cheap prices for the 383s either unless its complete toast and needs to be rebuilt. For a running engine its hardly any more for a 440 if you shop around.


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: 383 to 440 [Re: CYACOP] #148480
11/10/08 05:38 PM
11/10/08 05:38 PM

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440 sounds better too., 383 has a chebby vibe to it,

Re: 383 to 440 #148481
11/10/08 05:51 PM
11/10/08 05:51 PM

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Intake, pushrods, and distributor from the aspect of a short block. Ex manifolds, mounts, pan bell are interchangeable

Watch the flywheel---Some 440s are externally balanced and need the appropriate converter/ flywheel

Re: 383 to 440 #148482
11/10/08 07:41 PM
11/10/08 07:41 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
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Posts: 24,562
Brookeville, Md
Quote:

Intake, pushrods, and distributor from the aspect of a short block. Ex manifolds, mounts, pan bell are interchangeable

Watch the flywheel---Some 440s are externally balanced and need the appropriate converter/ flywheel




can't use the intake or distrib from a 383. 440 distrib is taller-longer. ex manis will be the same. You might have a slight probalme w/ your old pipes. A 383 is shorter. FWIW $ for $ a 440 will stomp a mud hole in a 383.

Re: 383 to 440 [Re: Mr.Yuck] #148483
11/10/08 08:01 PM
11/10/08 08:01 PM
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Posts: 25,200
Upper Midwest
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MoparforLife Offline
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Quote:

Quote:

Intake, pushrods, and distributor from the aspect of a short block. Ex manifolds, mounts, pan bell are interchangeable

Watch the flywheel---Some 440s are externally balanced and need the appropriate converter/ flywheel




can't use the intake or distrib from a 383. 440 distrib is taller-longer. ex manis will be the same. You might have a slight probalme w/ your old pipes. A 383 is shorter. FWIW $ for $ a 440 will stomp a mud hole in a 383.



440 push rods are longer too.

Re: 383 to 440 [Re: MoparforLife] #148484
11/10/08 08:35 PM
11/10/08 08:35 PM

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Quote:

Quote:

Quote:

Intake, pushrods, and distributor from the aspect of a short block. Ex manifolds, mounts, pan bell are interchangeable

Watch the flywheel---Some 440s are externally balanced and need the appropriate converter/ flywheel




can't use the intake or distrib from a 383. 440 distrib is taller-longer. ex manis will be the same. You might have a slight probalme w/ your old pipes. A 383 is shorter. FWIW $ for $ a 440 will stomp a mud hole in a 383.



440 push rods are longer too.





I guess I didn't make that totally clear. He asked what WON't fit, and that was my answer. This is what happens when you get old. You get forgetful. You get cranky. You think you answered the question when you were thinking of something else. Well, OK.

Re: 383 to 440 #148485
11/10/08 10:01 PM
11/10/08 10:01 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
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Posts: 24,562
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Quote:

Quote:

Quote:

Quote:

Intake, pushrods, and distributor from the aspect of a short block. Ex manifolds, mounts, pan bell are interchangeable

Watch the flywheel---Some 440s are externally balanced and need the appropriate converter/ flywheel




can't use the intake or distrib from a 383. 440 distrib is taller-longer. ex manis will be the same. You might have a slight probalme w/ your old pipes. A 383 is shorter. FWIW $ for $ a 440 will stomp a mud hole in a 383.



440 push rods are longer too.





I guess I didn't make that totally clear. He asked what WON't fit, and that was my answer. This is what happens when you get old. You get forgetful. You get cranky. You think you answered the question when you were thinking of something else. Well, OK.




forgive me...I have 4 beers down and into my cough meds w/ codine.

Re: 383 to 440 [Re: Mr.Yuck] #148486
11/10/08 10:22 PM
11/10/08 10:22 PM
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Posts: 7,664
IN
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ahy Offline
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Another approach would be to look for a 400 and rebuild/stroke with a 440 crank turned down to 400 main size. You would have a 451 that would take original 383 accessories... and be a sleeper.

Re: 383 to 440 [Re: Mr.Yuck] #148487
11/10/08 10:36 PM
11/10/08 10:36 PM
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Sk. Canada
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Quote:

. FWIW $ for $ a 440 will stomp a mud hole in a 383.


Ahem,....Not in every case...

Re: 383 to 440 [Re: ahy] #148488
11/10/08 11:03 PM
11/10/08 11:03 PM
Joined: Sep 2007
Posts: 90
Columbus, Ohio
A4SixtyNineRR Offline
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Quote:

Another approach would be to look for a 400 and rebuild/stroke with a 440 crank turned down to 400 main size. You would have a 451 that would take original 383 accessories... and be a sleeper.



I know of someone in TN looking to unload a good 400 motor. He was offering it to me to make a stroker for my RR, but I prefer to keep my 440.

Re: 383 to 440 [Re: A4SixtyNineRR] #148489
11/10/08 11:53 PM
11/10/08 11:53 PM
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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StealthWedge67 Offline
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Why not just use the 440 crank & stuff it into the 383.... voila 432 cubic inches in a 383 wrapper. or find a 400 block and go the 451 route. A low deck 432 will be on par power wise with a similarly built 440, and youd be able to dress it up like a 383.... #'s match & everything. Sort of the best of both worlds.


LemonWedge - Street heavy / Strip ready - 11.07 @ 120
Re: 383 to 440 [Re: StealthWedge67] #148490
11/11/08 12:42 AM
11/11/08 12:42 AM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
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Quote:

Why not just use the 440 crank & stuff it into the 383.... voila 432 cubic inches in a 383 wrapper. or find a 400 block and go the 451 route. A low deck 432 will be on par power wise with a similarly built 440, and youd be able to dress it up like a 383.... #'s match & everything. Sort of the best of both worlds.





Bang for your buck, using your 383 with a 440 crank might be a good deal. But a 451 would also be great just because of the large 400's bore size plus the 440's stroke. Would give a good combo plus use your 383 intake, pushrods, blah blah blah.

Re: 383 to 440 [Re: DaytonaTurbo] #148491
11/11/08 03:22 AM
11/11/08 03:22 AM
Joined: Jun 2006
Posts: 5,166
CT
GTX MATT Offline
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Theres always complicated little details were a 383 can be better than a 440 but in a general case a 440 is a better starting point for a street car. Any 383 that can run high 11s with an automatic will probably be a little on the wild side and it will need deep gears. A 440 on the other hand can be pretty streetable and run 11s with factory heads. Go with more cubes you'll be happy with the torque. While I love a 383, a 440 just has more advantages.

You dont need much, pushrods, dizzy, and intake wont cost you much especially if you dont care if theyre brand new or not. Buy new pushrods, a used factory intake for 60 bucks if youre not going for all out performance, and a used distributor if youre really trying to save. Even if you buy a new distributor its going to cost you maybe 200-250 bucks extra, not too bad. Plus you can sell of the 383 parts you dont need and the shortblock you have now if its not numbers matching Id say theres probably more piston choices for a 440 too to get whatever compression ratio youd like.


Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
Re: 383 to 440 [Re: RemCharger] #148492
11/11/08 12:38 PM
11/11/08 12:38 PM
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck Offline
Not enough dumb comments...yet
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Posts: 24,562
Brookeville, Md
Quote:

Quote:

. FWIW $ for $ a 440 will stomp a mud hole in a 383.


Ahem,....Not in every case...



ahem..yes they will. you take a stock stroke 383 and I'll use a 440. whatever your dollar amount is I will win... I've had 383's and 440 built to almost the same specs, and the 440 has always had better et. It's to hard to make up for the 57 cubic inches.

Re: 383 to 440 [Re: Mr.Yuck] #148493
11/11/08 12:56 PM
11/11/08 12:56 PM
Joined: Jan 2003
Posts: 683
CENTRAL MINN
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CENTRAL MINN
there's no replacement for displacement, but I'm all about originality. if your roadrunner came with a 383, my mind would already be made up. if you have a factory 318 clone car, do what you must. the bigger the better.

Re: 383 to 440 [Re: 1965_PLYMOUTH] #148494
11/11/08 01:10 PM
11/11/08 01:10 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
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I would go with a 400(451). especially if you are rebuilding that way everything fits just like it did with the 383


live every 24 hour block of time like it's your last day on earth
Re: 383 to 440 [Re: RapidRobert] #148495
11/11/08 02:27 PM
11/11/08 02:27 PM
Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices Offline
Why would you even post that?
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So Cal


More room under the hood, everything fits, more room to fit the headers, everyone thinks you have less when you really have more...


Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.
Re: 383 to 440 [Re: HealthServices] #148496
11/11/08 02:35 PM
11/11/08 02:35 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
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Quote:

More room under the hood, everything fits, more room to fit the headers,


exactly. A steel crank 440 is going to cost & unless it is fairly fresh, grabbing a 400 block & 451 kits are reasonable & 68 more cubes than you started with.


live every 24 hour block of time like it's your last day on earth
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