241 castings to 317's
05-05-2004, 02:58 PM
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241 castings to 317's Ok here's the story. about a year ago I bought stage 1 heads from JPR pop hose babies on their and to my surprise I made the same numbers I did Cam only(Joe sold me stock Heads) Now I am out $1400 and I am looking for a cheap alternative. I will not spend another 1400 for heads. I can get some 317 castings fairly cheap and I was wondering if there would be any noticable gain over my shady JPR 241 castings. 
05-05-2004, 03:21 PM
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In stock form - no. The 317 castings have a larger combustion chamber and will drop your compression to about 9.5:1. This will negate any marginal increase of a slightly better flowing port.
05-06-2004, 08:56 AM
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If I could find a cheap set of ls-6 heads would that do anything? I am really only looking to pick up another 15-20 Rwhp from these. That is why I went with a stage 1 head to began with. Do you think that is possible?
