HONDATUNER356 Posted March 2, 2010 Report Share Posted March 2, 2010 im getting ready to swap cams and was wondering how much lift a stock set of sbc heads will hold before i have to swap out springs and other stuff. its a new cam going in so i would also like to know of a good way to break it in. any suggestions would be great. thanks Quote Link to comment Share on other sites More sharing options...
HONDATUNER356 Posted March 4, 2010 Author Report Share Posted March 4, 2010 anyone? Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted March 4, 2010 Report Share Posted March 4, 2010 stay under 550! but, depending on heads, you might have to stay under 500. .500 would be your best bet. like the lower dollar lunati kit with lifters for 90. Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted March 4, 2010 Report Share Posted March 4, 2010 if you use a vortec head your max lift is around .450 with stock valvetrain. Quote Link to comment Share on other sites More sharing options...
HONDATUNER356 Posted March 4, 2010 Author Report Share Posted March 4, 2010 ok sounds like i should be ok then. the cam i am putting in is a 454/454 lift. they are not the vortec heads. Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted March 4, 2010 Report Share Posted March 4, 2010 your fine then Quote Link to comment Share on other sites More sharing options...
hpfiend Posted March 5, 2010 Report Share Posted March 5, 2010 But the important question is what length pushrods...? Get an adjustable pushrod, make a lifter solid, assemble valvetrain, mark the end of a valve with a sharpie and go through two valve cycles and check the pattern, adjust, repeat. At .450 you shouldn't have piston to valve clearance issues unless you are using domed pistons *I don't think* but that is something else to check with some clay. Buy a long bolt that will thread into the front of the cam to help you hold it and leverage the back so you can clear the bores without nicking them... I am pretty sure I just covered mine in ARP assembly lube and use a drill to prime your oil pump, start it and let it run a while, change the oil, let it run some more, change the oil again, and you should be good to go- I would put a couple hundred miles on it with some easy driving before you redline it but probably not necessary as they say the majority of cam wear happens the first 90 seconds. Quote Link to comment Share on other sites More sharing options...
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