383 aluminum heads Options

[67satelliteman]

What would be the best aluminum heads to use on a 383 engine with price being a major consideration?

[66 Dart GT]

Why aluminum?? We beat the shit out of this not to long ago and everyone has there own opinion about aluminum heads a buddy of mine uses victors on a 440 and runs a consistent 9's in a altered me i always use cast heads done right they work well just my 2 cents.
Ed.

[mrmopartech]

Wheather its a eddy or stealth head,the port volume is to large for the bore of most engines under 500 cubes.Does it start and run YES,but as soon as you bolt a set on,you loose at least 30-40 % of its effeincy as the heads only make gains over iron heads after .500 lift to .700 lift,so even if you have a .550 lift cam and are going to run the engine at 7500rpm,its still not going to make are the power it was intended for.Most of us use up to .525-.550 cams,and these heads will kill cylinder filling,due to the large runners they have,and a small bore 440 can not pull through a 210cc runner and fill the cylinder,with a 2.14 valve.Do a set of 342/452 heads the right way and be safe and have the motor pull through al the gears and not to some godly rpm band.The 440 does not need to be turned at 7500 rpm to make max power,6500 max with a well tuned engine and you will beat the others hands down.NHRA stock class 440 cars run low 11,s and high ten,s with bone stock parts,so why do you need parts that are going to cause your combination to go in the crapper,mrmopartech

[racerhog]

What would be the best aluminum heads to use on a 383 engine with price being a major consideration?

Have you picked something yet?

[tggodfrey]

PM BJR Racing (Bobby Joseph). He made me a couple sets of Cast iron heads that work fantastic on a 383. With a 545 lift cam, heads intake and 950 carb I am able to produce 450hp on a dyno here in IL. Thats with 38* of timing and 93 octane pump gas. Flow numbers on the heads were comparable to most aftermarket heads and still retained the port velocity that MRmopartech is referring to.

If i recall Bobby Joseph mentioned the new Mopar wedge heads can be made to work very well also but you will have to ask him on that.

Good Luck.

[67satelliteman]

PM BJR Racing (Bobby Joseph). He made me a couple sets of Cast iron heads that work fantastic on a 383. With a 545 lift cam, heads intake and 950 carb I am able to produce 450hp on a dyno here in IL. Thats with 38* of timing and 93 octane pump gas. Flow numbers on the heads were comparable to most aftermarket heads and still retained the port velocity that MRmopartech is referring to.

If i recall Bobby Joseph mentioned the new Mopar wedge heads can be made to work very well also but you will have to ask him on that.

Good Luck.

Thanks! I just might have my old heads reworked in the future and ditch the ideal of alum. heads.

[BJR Racing]

67,
Just for your info. here is what a Edelbrock head flows out of the box. This head and a 440 source stealth head are basically the same castings as they both share the same port size and flow numbers. Below are some flows that they have and flows of iron heads with respective ports and valves.

lift..............int. flow..............exh. flow Eddy head with 2.14/1.81 valves and 210 cc intake runner O/O/B
.100.............79........................70
.200............145......................126
.300............209......................160
.400............254......................188
.500............278......................206
.600............290......................217
.700............292......................223

Now the flow from one of my 179 cc port runners with 2.08/1.74 valves 346 head 70-71 vintage
this head would cost you less than the eddy head with more performance. Eddys cost about $1,700.00 without work, my heads to you would be in the range of $1,400.00 complete.

lift..............int................exh.
.100............99................89
.200...........191..............130
.300...........229..............188
.400...........243..............204
.500...........285..............207
.600...........289..............210
.700...........298..............212
.800...........304..............213

even though the numbers are close you have to take into account that the 346 head is 31 cc's smaller on the intake runner and using smaller intake and exh. valves. This head made 125 HP more on my engine that had a large port runner on it. The head that I had on my engine was the MP Max Wedge Iron head. I had bowl blended and gasket matched the head only and this is what it flowed. The head was 220 cc's of intake port runner volume.

lift.............Int............Exh.
.100...........87.............87
.200..........175...........126
.300..........229...........155
.400..........291...........202
.500..........307...........213
.600..........307...........221
.700..........307...........227
.800..........309...........246

This head has 2.08/1.88 valves, this head is a cross between a 906 and a 452/346 head port, with a Max wedge port window. Below is the head that I did for Terry Godfrey, it is a 906 with a MW port in it and 2.08/1.74 valves. This head is 213 cc's of int. port runner.

lift..............int..............exh.
.100...........105.............93
.200...........190............129
.300...........225............190
.400...........260............204
.500...........300............215
.600...........300............221
.700...........302............222
.800...........302............222

The thing that you have to look at is where your cam operates at, not peak flows. Being that most of us will be running cams that are .550 or less for the street, the values from 1-5 are very important and this is the area that I consentrate on most. Also you'll notice that the 346 head flows very, very close to all the other heads, and has the smallest port of them all. This is the most effiecent head that I've done todate. Effecientcy is what moves the most with the least generally speaking, and the more efficent the head the more power you'll get out.