Zincs?

[jerry and sons]

I know that there is a zinc in my heat exchanger, should there be zincs anywhere else on the crusader. By the way it is a 454 1991.
Thanks

 

[makomark]

at the bottom of the U shaped oil cooler, inboard side, real close to the water pump's pulley.

 

[jerry and sons]

Does anbody know the size?

 

[firepiper]

1/2 x 2"x 3/8 16 thread,

 

[knuckle47]

The u-cooler ones are 1/4 " diameter

 

[makomark]

E-0 in the oil cooler & E-1 in the HX

 

[firepiper]

I run the same in each. Both E-1