Cam and cam bearings
Hello everyone. I'm running a 1971 Lincoln 460 block, And its having some Oiling Issues. Before I get to that, I'll explain about my rig, and what happened in the first place.
1973 F-450 Frame
1975 Jeep CJ5 Body
Rockwell Axles (front steer, solid rear) on 47" LTB's
Over time, wheeling with the rig, Lots of jumps, bumps, and general thrills while mudding, i didnt notice, the raised center Chunk of my Rockwell front axle has a top plate cover, which one of the bolt heads had been tapping my oil pan. one day while wheeling, I hit a bump hard enough that it punctured through the oil pan, shooting all my oil out. With full Hydro steering, I had to leave it running, but in neutral, ans my buddy quickly (2 minutes) pulled me to his shop.
Upon inspection, Piston walls were still perfect, Head components were fine. The Main+Rod bearings had gone to the copper layer (mid of the 3), however the crank+rod surfaces were still perfect. So i went ahead and changed all rod+crank bearings back to 10 over. Swapped in a High Volume Pump, and a new timing set while i was there.
When i reassembled all of it, Fired right up, and at 75-80 PSI.
But heres my problem: At about 5 minutes of running, even at idle, It drops to 60 PSI. 10 minutes, 40 PSI, and so on. It still hasnt dropped below 5 PSI. When i hit the gas to about 2000 RPM it always perks up 20-40PSI. WHile i've been told that 5-10PSI is ok to run, Its seriously bothering me, as the Chiltons book says the block should run 60-80 PSI at 2000rpm, and around 40 for Idle.
I got to it, and took everything apart. It was indeed Cam Bearings!
So I've been doing some research and it seems the best fix is to go with Wider Cam Bearings - Anyone have an Idea where to pick up a set of these?
I was also thinking of stepping up the cam a bit while I'm at it. Which would also benefit from replacing the stock carb.
I realize im going to need to change the springs on the head for the new cam as well, I'm checking to find my Head ID code, (id imagine D1VE or D0VE) and find the stock spring rate to see if i can find a cam within those limits, but thats doubtful.
Anyone have and suggestions for cam and Carb? And anything else i missed? Thanks