txpete, i bought the hydrovac at orielys, part#51-8056. rock auto has it, part# A-1 CARDONE 518056. napa has it listed as NBB 518056. as for the wheel cylinders i will have to look at my receipts but they were all purchased at rock auto. i searched every year that had large trucks listed. napa online was the best to find part numbers to cross on other websites. seems like maybe a 1980 c70 may have been the truck i found them. like i said before though some of the flare fittings may need to be changed to a finer thread pitch.

i will say that i have a 59 spartan 80. i cannot be certain these parts are the same for a viking 60. there are photos of all of these parts so you can see if they are the same before buying. hope this helps.

i have learned to never ask the person behind the counter if they have a part for a 1959 chevy 2.5 ton truck. they instantly say no. you have to go in with a part number for them to cross. they will ask what it is for i just kind of beat around the bush until they start pecking on their keyboard. the one exception is the 70 year old napa store near me that has old guys working who have ancient books that are as long as the counter. they can usually get me a part number. usually obsolete but its a start.

Last edited by Gene_Spartan80; 11/29/2016 3:42 AM.
1959 Chevy 8500 - Spartan 80
366 BBC