Re: hydraulic lifters - 1947 356 cu inch

Posted by Dell On 2016/1/19 21:12:05

Hi John; There is a installed spring height which I believe is 1.75 in. (I am on vacation and don't have any of my books) There is a gauge that is used to measure this, also the spring pressure should be measured on each spring. Do you have the washer that looks like star washer and goes on top of the spring? If the star washer is not on top of the spring and you have a weak spring along with high oil pressure the lifter will open the valve. It is necessary that you measure the space from the retainer to the block and then use shims to get the correct spring height. also have the spring pressure checked or buy new springs, you must also check the new spring pressure, as some times new springs are not as they should be. Any engine rebuilder should have done this. It is a big job, but needs to be done for correct operation. Hope this helps, Dell