Bearings?

[dodgetkboy78]

What were OEM bearings from the late 60's/early 70's made out of?

[Chryco Psycho]

which bearing ?
, engine bearings are steel backed & babbit lined , most good replacement bearings are tri metal , steel lined , copper in the middle & babbit lined 

[dodgetkboy78]

Mains and Rods......................

Seems like the old bearings last longer than the new ones..........................................(sigh)

[Chryco Psycho]

not if the machining was done correctly

[dodgetkboy78]

I just dont get it. I pulled a 318, out of a 2 ton truck, with over 300,000 miles. the bore is good, the crank is good, (steel) and the dang bearings are even good!
Unless it was rebuilt with a OEM gasket kit, and not bored or turned, the dang thing has the 315,*** miles the maintenance log said it did. (It did have a wore out double row chain)

[Chryco Psycho]

the bearings should have the date on the back of the shell

[dodgetkboy78]

8-71-07******

[Chryco Psycho]

aug 71

[dodgetkboy78]

holycrap.