Advanced timing for a 360
I just got done replacing the bearings in the lower end of my 360 even though it went through a total rebuild about 5000 miles ago. The main bearings were bad giving me low oil pressure and rod bearings were wearing bad on the top half of the bearing. A friend of mine said the rod bearings could be a sign of the timing being too high. I have the timing set at stock with the vacuum line disconnected but the advanced timing I never messed with even though I installed a mallory uni-light distributor right after the rebuild. When checking the advanced timing it was at around 45 deg when fully advanced. Is this close to stock or should I adjust the advanced timing?
THE DIFFICULT WE DO IMMEDIATELY, THE IMPOSSIBLE TAKES A LITTLE LONGER...
Re: Advanced timing for a 360
Unless you are advanced far enough to be causing detonation, the timing won't affect your bearings...
You need to advance your timing by the book, then listen for detonation.
If you do NOT have detonation, you can advance the timing a few degrees at a time until you get detonation, then back the timing off until the audible detonation stops, then back another 3 to 4 degrees to stop the detonation you can't hear.
If you have detonation at the factory setting, you have another problem.
Find that problem and eliminate it first.
Wear on the 'TOP' of the main bearing can only happen if you used the wrong bearings, installed them improperly, or didn't get the crankshaft trued before install.
The block needing align bored will cause the bearings to wear unevenly, but it won't be just the top half of all your bearings.
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