Thread: help with SBC 350

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Originally Posted by lilrobo

i have 53 ford f100 with a SBC 350 ( i know ) don't what year the motor is anyway my problem is when cold i have good oil pressure after it warms up it drops to like 10 or so ,, the oil pan has been worked on , i mean someone has welded a 2 "on it adding 2" of more sump for some reason ,, i dont know what oil is in it ,, i have bought a HV oil pump ,, do you think this will help ??? and what do you guy recommend ?? thanks guys

having a engine drop 10 psi or more when hot is is really nothing to worry about as long as the oil psi under a load stays were it.s at when warm or builds Psi as rpm s climb.s . far as pan the dip stick ...stick part that reads full should read the same level if 4 qt or 40 this just tell you the oil level is were it needs to be in the pan . the oil pump pick up should be about 1/2 to 3/8 from pan if a good thick pan you can run them a hair closer . many times the bottom of the pan can suck up to the pick up. have seen many engines over the years. having low idle oil pressure if you think you want to put a HV pump in it the you need the steel sleeve Hd pump drive . if the melling m55hv . before you do this you may want to try a better oil filler and change the oil .if youi go with a new pump i would use the m155 any way you go make sure the pickup fit s the pan

Originally Posted by pat mccarthy

make sure the pickup fit s the pan

Go down to the crafts store and get a small amount of oil-based modeling clay. Remove the pan. Make an ice-cream-cone-shaped piece of clay, about 1 inch long and mush it onto the bottom of the pickup. Oil the clay so the pan will not stick to it. Push the pan into place. Don't bolt the pan down, just push it into place like it is being installed. Remove the pan. Measure how long the piece of clay is, from the face of the pickup. It should not exceed 1/2 inch. If the clay is longer than that or the clay didn't even touch the bottom of the pan, then you need to do some surgery to the pickup to bring it within 1/2 inch of the pan.

The next procedure will help you keep track of the amount of oil in the pan. Once you have the pickup to pan clearance worked out, bolt the pan back up and put 4 quarts of oil in the pan. Push the dipstick in and pull it out. Take the corner of a file and cut a groove on the dipstick. Add a quart and repeat the procedure, making another mark on the dipstick. Add a 6th quart and repeat, making a third mark on the dipstick. Now you have a permanent, correct manner of knowing precisely how much oil is in the pan.....4, 5 or 6 quarts.