head swap questions
08-24-2007, 10:49 PM
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head swap questions is it worth a drop in .64:1 compression to go from 241 heads to a slightly better flowing 317 heads? it would take me from 11.10 to 10.46 and my dcr from 8.77:1 to 8.27:1 from what i read in the FAQ the 317's flow about 15-20 cfm more than the 241. need some help here.
08-25-2007, 05:44 PM
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here are the numbers i got from the FAQ
200 121.9 142.5 21
250 150.8 175.3 25
300 177.5 195.9 18
350 199.6 214.5 15
400 214.5 228 13.5
450 222.0 232.1 10
500 219.3 235.7 16.4
550 223.2 238.2 15
600 227.1 240.4 13
650 228.6 243.1 15
700 231.9 245.5 14
200 121.9 142.5 21
250 150.8 175.3 25
300 177.5 195.9 18
350 199.6 214.5 15
400 214.5 228 13.5
450 222.0 232.1 10
500 219.3 235.7 16.4
550 223.2 238.2 15
600 227.1 240.4 13
650 228.6 243.1 15
700 231.9 245.5 14