Thread: 305H cam degree help

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you need to check the valve spring height were you are at before you just throw springs in thinking there going to work ? on a race engine for head work this take some time were some think just throw the springs on and go. if the heigth is not there you can stack your new springs to .or like i said someone shims the right spring if down on pressure by added shim will take way from the set up height .height can be added by + valve locks deferent +retainers longer valve s and spot facing the spring pockets you do not want to spot face the spring pockets much if any and you need to check you valve guides to the inside of the retainer if off you at the lest will smash your valve seals .500 lift cams can hit but you have to look at more then just cam lift lobe sep and cam dur and over lap add to this as for the stock valve reliefs if you have bigger then oem valve dia can hit the pistons to .if you do not know much about engines you need to get up to speed or you will be back were you are now with just more money spent watch out for friends that know every thing that learn what not to do next time on your wallet