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I have a98 c5 and would like to know what is the diff between a stock cam and say a zo6 cam spec. If I put in a zo6 cam do I have to change the springs also ? Or could I just change the rockers to pick up more air low what is stock rockers 1.6? Has anyone ever tried porting a set of stock manifolds? Do you think it would pick up any if I removed cats? I have air intake,ls6 intake,x pipe and corsa cat back,3.42 gear,auto(would like a converter)and will be getting a tune after this is all done. Trying to do as much as I can on a budget,and yes I would love long tube headers but can not spend 1000 dollars on them would like to find a used set even if they have some dents or damage.
I have a98 c5 and would like to know what is the diff between a stock cam and say a zo6 cam spec. If I put in a zo6 cam do I have to change the springs also ? Or could I just change the rockers to pick up more air low what is stock rockers 1.6? Has anyone ever tried porting a set of stock manifolds? Do you think it would pick up any if I removed cats? I have air intake,ls6 intake,x pipe and corsa cat back,3.42 gear,auto(would like a converter)and will be getting a tune after this is all done. Trying to do as much as I can on a budget,and yes I would love long tube headers but can not spend 1000 dollars on them would like to find a used set even if they have some dents or damage.
I'm not a A4 guy,but looking at your mods I think a 3600/3800 converter would be the best bang for the buck in relationship to performance now. The rest of the mods can come as money permits. Personally I would get the LT's first then the cam...porting the stock intake and removing the cats will only provide very minimal gains at best. Yes when you up grade from a stock LS1 cam you must up grade the valve springs accordingly...stock rocker ratio is 1.7.