Thread: Oil pressure drop after top end rebuild

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Originally Posted by webby

Thanks Guys I was feeling a little lonely.
I didn't mic the journals so that is a possibility. I fitted the endure-x lifters because they have direct oiling to roller. I have heard that solid rollers in street engines do not last without that facility. So if I use std restrictors it will also reduce flow to the new lifters which I am not keen on because of the above. I did not use the o-rings on the oil pump drive because the block is not chamfered to allow them to fit and original dizzy did not have them. my research tells me that small blocks are prone to over oiling at the top end hence why a lot of people fit std restrictors. I thought that restrictor pushrods would give me the ideal solution if they dry up the top end so causing spring failure etc why do comp make them?

to sell you new valve springs .if you restrict at the back of the block your turning the top end oil off abit its going to get to the lifters first . you can look at it that way but your still going to dry up the springs abit .i used hippo lifters was never a big deal on oil psi on the big block but never used a set on a sbc. you can buy a smaller hole push rod TREND pushrod makes them to. i would put the restrictors in the back of the block BUT YOU WANT TO JUMP UP ON THE HOLE SIZE DRILL IT OUT ABIT BIGGER the oiller from GM is about 1/4?stock have to check on at the shop. there 4 holes in the restrictors i would add up the 4 holes and drill them out till your = to 3/16 ,why i would use the restrictors there cheap and i like oil on my valve springs for street use. new push rod s are $$ .the O ring never help much i played with and with out,its a good way to go if the dist hole edge is rounded for the o ring first thing i do when i prep a block .. . i have seen oil psi drop i did a Zo6 but oil pumps are not to hot .. with T&D rockers with spring oiler s and that did take the oil psi down but many road races and now its back on the street still running .i just did not see your post this stuff jerry and i do. so i am always happy to add my two cents .as for the hippo lifters for the street there good way to go but your going to get some oil splash off the crank rods that will hit the cam .low speed idle is hard with out a lifter with out hippo some lifters hold up better then others i ran solid rollers on the street for many years spring lbs and cam lift comes in to play on the street smaller cam s= lower spring lbs with good rollers lifters can have a good life span