Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 05-28-2005, 04:01 PM
jafmg383 jafmg383 is offline
Inactive User
 
Join Date: May 2005
Location: Miami, Mb.
Posts: 2
Default '67 383 rebuild

Hey,

I'm just about to start my first 383 rebuild. I traded some modern mopar
parts for a '67 383. It is in very nice condition, but has a two barrel intake and heads. I would like to bring the hp up to the 400-425 range. I'm wondering if I should look around for the period correct four barrel intake and heads or should I be looking aftermarket. I don't want to spend too much. Your suggestions would be greatly appreciated.
Reply With Quote
  #2  
Old 05-28-2005, 08:29 PM
roadrrr roadrrr is offline
Inactive User
 
Join Date: May 2003
Location: Atalissa, iowa
Posts: 45
Default

I`ll add my two cents..We had a 66 sport fury with a 383 and stock manifold. I installed a stock one from a `69 roadrunner 383 and made a BIG diff. you could see the difference in intakes. just my expierence..and it still looks stock
Reply With Quote
  #3  
Old 05-29-2005, 10:07 AM
23T's Avatar
23T 23T is offline
Inactive User
 
Join Date: Oct 2002
Location: Lubbock, Texas
Age: 77
Posts: 973
Default

Quote:
Originally Posted by jafmg383
Hey,

I'm just about to start my first 383 rebuild. I traded some modern mopar
parts for a '67 383. It is in very nice condition, but has a two barrel intake and heads. I would like to bring the hp up to the 400-425 range. I'm wondering if I should look around for the period correct four barrel intake and heads or should I be looking aftermarket. I don't want to spend too much. Your suggestions would be greatly appreciated.
To get that HP you will need some after market parts some machine shop work and it's not going to be cheap
Reply With Quote
  #4  
Old 05-29-2005, 11:04 AM
jelsr jelsr is offline
Inactive User
 
Join Date: Dec 2001
Location: Dighton, Kansas
Age: 84
Posts: 1,253
Default

Check the numbers on the heads, I've seen em with 915's. You can probably get into that range with some good pistons near 0 deck, some pocketed heads, good cam, and 4 bbl. They will live at rather high RPM's for a BB and make very respectable HP.
Reply With Quote
  #5  
Old 05-30-2005, 01:56 AM
dave571's Avatar
dave571 dave571 is offline
Inactive User
 
Join Date: Feb 2001
Location: carstairs,alberta,canada
Posts: 2,809
Default

Jelsr's right.

Check the casting number on the heads.
There is no such thing as 2bbl or 4 bbl heads. Just different casting numbers, some used in multiple scenarios.

A 67 383 should either have 516's or a set of 915's with 1.60 exhaust valves.
I got my 915's from a 67 383 2 bbl motor. They only had the 1.60 valve. I put in some 1.74" manley's

Usually only the 440 hp's got the version of 915 with the 1.74 exhaust valve. BUT I have noticed from talking to a number of individuals who have take a part 67 383 and 440 motors that there is no carved in stone fact on this subject. (which heads came on the motor)

400 real hp is doable with a 383, and a 0 deck piston, but as said it won't be cheap. You'll need a Pretty lumpy cam, and some good bolt on's.
Reply With Quote
  #6  
Old 05-30-2005, 03:31 AM
jafmg383 jafmg383 is offline
Inactive User
 
Join Date: May 2005
Location: Miami, Mb.
Posts: 2
Default

Thanks for the help. I had been lead to believe that the intake (2 or 4 barrel) decided what heads were used. Obviously, I'm in over my head on this. I'm going to take one of the heads to my local engine shop and see what they say about it. Thanks again.
Reply With Quote
  #7  
Old 05-30-2005, 03:28 PM
69CORONET440's Avatar
69CORONET440 69CORONET440 is offline
Inactive User
 
Join Date: Jul 2000
Location: NorCal U*S*A
Age: 64
Posts: 395
Pick up:
"How to Rebuild Big Block Mopars"
"Big Block Mopar Performance"
lots of real good info. Good luck.
Reply With Quote
  #8  
Old 05-30-2005, 09:57 PM
dave571's Avatar
dave571 dave571 is offline
Inactive User
 
Join Date: Feb 2001
Location: carstairs,alberta,canada
Posts: 2,809
Default

Quote:
Originally Posted by jafmg383
Thanks for the help. I had been lead to believe that the intake (2 or 4 barrel) decided what heads were used. Obviously, I'm in over my head on this. I'm going to take one of the heads to my local engine shop and see what they say about it. Thanks again.
Your Local shop will be able to help with the machining. It is unlikely that they will know much about the different benefits of one casting number vs another.

The casting number is on the intake runner of the cylinder head, and is easily readable, with the valve covers off. The last 3 numbers are what we recognize. Like I said, should b 915 or 516 if they are stock heads,

There is a good artical here on BB mopar heads cylinder heads.
http://moparmusclemagazine.com/techarticles/5115/

I know edelbrock heads get alot of press these days. Personally I think they are too big for a 383(in both valve and runner size) Great for a 440 or a stroker motor, but a little much for a 383 movign a heavy street car.
My .02
Reply With Quote
  #9  
Old 05-31-2005, 04:04 AM
DartGT66 DartGT66 is offline
Inactive User
 
Join Date: Sep 1999
Location: vantaa,finland
Posts: 4,622
Default

I don't think the Ebrocks are too big for a 383, nothing like the factory 2.19/1.90 valve huge rect port heads in a chevy 396 hi perf.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rebuild ewatts2003 Ram Truck Chat 2 08-09-2002 11:52 PM
340 Rebuild Mr.Mopar Performance Talk 2 10-07-2001 05:29 PM
318 rebuild ndw2832 Performance Talk 9 09-27-2001 02:26 PM
360 rebuild Doobiemon Performance Talk 1 09-20-2001 05:11 PM
2.5 or 2.2 for rebuild bbaspense Front Wheel Drive Chat 7 08-18-2001 09:08 PM




All times are GMT -4. The time now is 07:58 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .