good luck on the dyno with your new comb. i did a lot of work in the runners to make them al equal and quite a bit bigger, and also radiused the turns from the plunem to the runners and opened up the plunem also. all said and done i have about 20 hours in the intake. carbs have had the choke hosing removed and the boosters and venturies polished. heads are race ported elds that flow 318/240 cfm. cam is a solid roller 307/314 on 106 with .600 lift 468 cubes 10.4:1 compression. just a little street motor compared to your 505. hope you get some good numbers out of it.
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