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#1
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'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. |
#2
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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
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#3
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Quote:
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#4
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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.
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#5
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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. |
#6
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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.
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#7
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Pick up:
"How to Rebuild Big Block Mopars" "Big Block Mopar Performance" lots of real good info. Good luck. |
#8
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Quote:
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 |
#9
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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.
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