Caballerokid, I use this website for informational purposes. CamQuest ? Select The Perfect Camshaft & Valve Train Components
Checking cams with different heads,compression, carbs, etc. I found a cam similar to yours. It a Comp Cam 12-210-2, 1500-5500, .454/.454/ 218/218 LSA 110 ICL 106. When checking it on the dyno it made 310@4500 hp and 395@3500 Torque with low perf/stock ports & valves, dual plane intake-std flo, 600 cfm carb. I guessing your cam has about 295hp and 364 lbs Torque at the flywheel. Look on your dyno sheet to find out at what RPM you made the 250hp and 317 TQ. Changing heads to HP stock ports and valves, dual plane intake hi-flow, and 750 cfm carb, the increase is 368hp@5000 and 428 lbs Tq@ 4000. Pocket porting the heads increase it to 415hp@5000 and 442 lbs tq@ 4000. Now it might affect yours a little differently because of the 106 LSA and 102 ICL. If you was going to spend that kind of money get these: AFR 180cc SBC Eliminator Street Heads 0911 - SummitRacing.com
or these: AFR 195cc SBC Eliminator Street Heads 1036 - SummitRacing.com
or these: I would get these. Dart SHP Special High Performance Cylinder Heads 127222 - SummitRacing.com
. Then dump that Crane cam and try one of these XE262H 12-238-2 or XE268H 12-242-2. Make sure to order the heads with the springs that will work with these two cams. I have been trying to warn you about your compression that it's too high even for aluminum heads with pump gas.