243's vs. 317's
02-16-2011, 03:19 PM
#11
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Before I did my swap I comPare the difference between the two heads. Stock 317' to stock 243's. Intake runners had some differences. Combustion chamber is where I saw the big differences. Guess I should have took pictures.
02-16-2011, 03:21 PM
#12
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I'm sure once the heads go through a good porters hands all the stock numbers go out the window. I'm sure your heads will be just fine and with the extra compression it really makes a big difference
02-16-2011, 03:33 PM
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I think you would have to take away from the combustion chamber on the 317's to make them flow what the 243's do. Then you would have to mill them more to get the CR back..
02-23-2011, 12:38 AM
#17
Originally Posted by John Lingenfelter
The worlds's best cam combined with a poor set of heads will produce an engine that's a dog. But bolt on a set of great heads even with a poor cam and that engine will still make great power."
Originally Posted by Allen from Third Gen
I will add that a good free flowing exhaust system and good free flowing intake system to the list so as not to restrict the heads. Allen
