Thread: sbc with a 177 blower

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ok heres my plan and hopefully i can get some input and some advise...i want to build a blower motor for my 1956 pontiac...i'm currently running a sbc that works alright with truck stock dished piston and double bump heads milled down to 60cc and a decent cam, headers,5speed etc...
its a four bolt main block and is standard bore...
i want to run a weiand 177 roots style blower and have done alot of reading and can get one for a good deal through my work and still give me some room to play if i wanna make more hp... i want to run it on the 350 with the stock pulley setup to start with which will run 7.4 lbs of boost...i've been thinking about goin with aluminum heads to give me a little more of a safety zone and help out with compression issues and better flow..i will have to drop my compression down to 8.5 to make it work well so i've been told and have read from holley...i was wondering what i should be looking for for pistons and combustion sizes and weather i should have the block decked...now i'm just looking into cams and am not sure yet what to be looking for for duration or lift....according to holley i shouldnt have much problem making 400hp+ if this setup is done right... so if anyone can throw some advise my way i would greatly appreciate it thanx...