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-   Engines, Exhaust and Fuel systems (https://moparforums.com/forums/f81/)
-   -   Looking for stock 318 (72) cyl head flow data, with 1.78/1.50" valves (https://moparforums.com/forums/f81/looking-stock-318-72-cyl-head-flow-data-1-78-1-50-valves-10588/)

cudaracer 09-09-2011 10:48 AM
Looking for stock 318 (72) cyl head flow data, with 1.78/1.50" valves
 
I am running the COMP cams CamQuest6 program for cam selection, and in an effort to gage accuracy, I was hoping to benchmark my current engine as is, with correct flow data.
The program does not include that cyl head above.
I then want to run several scenarios in addition, including a worked/ported 318 head with 1.88" valve and then again with a 340 cyl hd (X) with 2.02/1.60" valves.
I have the 340 heads ready to go. Makes sense to just use them, and adjust compression.
Funny thing was, that after running the 318 through with the 340 head and flow data, I saw hp barely change when I punched the bore 0.040" on several cam suggestions. Torque went up though.
Thanks.

DartcustomcrusieR 09-09-2011 01:33 PM
Originally Posted by cudaracer (Post 74570)
I am running the COMP cams CamQuest6 program for cam selection, and in an effort to gage accuracy, I was hoping to benchmark my current engine as is, with correct flow data.
The program does not include that cyl head above.
I then want to run several scenarios in addition, including a worked/ported 318 head with 1.88" valve and then again with a 340 cyl hd (X) with 2.02/1.60" valves.
I have the 340 heads ready to go. Makes sense to just use them, and adjust compression.
Funny thing was, that after running the 318 through with the 340 head and flow data, I saw hp barely change when I punched the bore 0.040" on several cam suggestions. Torque went up though.
Thanks.
If the heads are 2v #302 casting. These heads carry the common 318/two-barrel valve sizes of 1.78/1.50-inch and in stock trim flow about 135 cfm

Coronet 500 09-09-2011 03:01 PM
Here are some: http://www.shadydellspeedshop.com/moparheads.htm

cudaracer 09-09-2011 06:47 PM
Originally Posted by Coronet 500 (Post 74588)

Thank you , that is exactly what I was looking for, flow at different lift points.

They had both stock and ported 302 heads, and man did they make them flow great after porting. Better even than X heads.

GDane1 01-07-2020 12:50 PM
596 cyl.heads
 
Are there any other cast iron cyl.heads that are better than the 596 cyl.heads? If yes what castings or type of cyl.head. Thanks In advance!!!


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