i have a chevy 454 with lot of oil pressure at the filter but no oil gettin up to the rockers.it has a new cam lifters and push rods any info would be greatful

just a couple of questions to get started . first ,how long did you let it run ? did you smother the cam with molly break in grease ? did you pump up the lifters with oil using a squrt oil can before you installed them ? lastly , what was your lifter preload at the rocker (ie 1/2 turn past zero preload ) this of course assumes you have a hydraulic cam installed . Oh yes one more item , the rear cam bearing on '65 thru '67 big blocks has a groove in it did someone install the wrong bearing ? was this oil pressure with a drill and a priming shaft orwas it running ? if you used a drill and a priming shaft you must rotate the crank assembly while you are priming it to force feed the lifters to pump up .... OK ? PBN

PS - BIG BLOCK CHEVIES RULE , I LOVE THEM !!!!

everything was installed correctly engine runnin or primed still no oil to the rockers

it looses pressure at the cam oil journals

it also has a hi volume oil pump{new}

thanks for the info it was very helpful the problem is the cam bearings and the engine was done at a performance shop(sad eh)

YEA THE REAR CAM BEARINGFOR 65 THRU 67 BIG BLOCKS IS DIFFERENT , IT HAS A GROVE IN THE MIDDLE AND IT WON'T WORK ON LATER MOTORS ... YEA , MAKE SURE YOU MARK MY ANSWER AS HELPFULL OR BEST OR WHATEVER ....

by the way , the man who taught me to say big block chevies took an opportunity way back in 1985 to tell me everything he knew about them BBC's while I was assembling my first engine ever , A big block chevy .. at each critical point of assembly JiM DILLON told me EXACTLY what ,why ,how and the inbetween of big block chevy assembly . that particular engine went 250,000 miles , got 20 mpg , and .... ran 180 mph in a '75 monte carlo . yesss we lost the hood !

I THANK YOU JIMMY D !!!! FOR ALL THOSE TIMES AND THE ONES INBETWEEN ...

I had the same problem. I found a blockage between the big block plug on back of block above and to the right of the oil filter and the passage up to the cam bearing. I squirted WD40 and 100lbs of air down passage and finally blew out trash blocking oil from lifters. I put oil pump back on oil pan 2qts of oil and oil filter and primed . Getting plenty of oil to cam bearing and lifters now.