can I run a zz4 cam in my LO3 with out changing valve springs? If not what is the biggest cam I can run? How bout a lt4 hot cam? Let me know thanks guys. Oh and i in the process of switching from tbi to carb so computer is not an issue.

 

Why are springs such a big issue? If youre going to go to the trouble of putting a new cam in, i dont get why you wouldnt just spend the money on some descent springs. Theyre not that expensive, its lifters and rockers that get expensive

 

so I would need to upgrade the springs? Can anyone recomend a good cheap replacment spring for this cam? Thanks

 

I think the factory LT1 springs would be a decent cheap set. May have to open up the spring pockets though.
comp 981's are a direct drop in, maybe a bit more cash though.

 

would the zz4 cam work well in an lo3? what kind of power can I expect. It is bone stock tbi now. Im switching to a carb and hei with a performer intake and heddman long tubes. Also was wondering what the best carb would be cfm wise im thinking a BG 650 or holley dp. Im going to go to a 350 later on so would a 750 dp be to much for the 305?