I have a 1990 chinook motorhome with a 460,it has the mark on the harmonic balancer but is missing the timing marks.
Can someone suggest a solution?Would a shop be able to re-mark it?

 

Im not sure ,but I think the timing brackett bolts to the timing chain cover. You could probably get one at a junk yard.

 

You saying the balancer only has one line mark on it & no others.
It should have the TDC line & then more lines with numbers over them. Might need to take a piece of sandpaper & clean the outside of the balancer so those lines & numbers will show up.

The 460 only has a pointer, not a flat piece with lines & numbers like the Chevys have.
Being a van front end, probably a bunch of stuff in the way & you cant see the pointer mounted below the water pump.

If your standing in front facing the grill, that pointer will be to the left down under the polution pump & beside the Altenator kinda about in the front middle of the engine.

A van has so much stuff crammed into the front area you might not be able to see that pointer.
Belts, pulleys, hoses, fan stroud, wires, my god its a wonder the fan will even pull air through the radiator.

You may need to slide up under the front, WITHOUT the engine running of course & feel with your hand just above the balancer & touch the pointer just to get an idea where its located.
Good luck, cause I got a class A & even with the polution pump & brackets all removed, I still cant see the timming pointer.
Neil

 

Thank-You for the tips.I did manage to get it timed.