V8 water pump replacement

[RoccoRunner]

Hi all, I've just posted in the Welcome section to try and introduce myself and the car.

I'm in the process of changing the waterpump as the exisitng one has a large leak and am wondering what is recommended to provide anti seize and seal the 4 long water pump bolts? The workshop manual says to use 3M-EC776 which seems to be an aeronautical grade product with a price to match and also a large quantity when only required on 4 bolts?

It looks like my dad has used a lot of Copaslip on the existing bolts when the pump was installed back in 1992, which did come out with no fuss, however it was old stuff with a high copper content, my new stuff seems nothing like as good, just wondering if there is something better to use?

 

[jp928]

Suggestions - get a 5/16 UNC thread chaser - NOT a tap! - and clean all the threads you can - those for the 4 long bolts might be difficult. Get new bolts - not stainless. I use one of the non-hardening gasket sealers on that area - Loctite No 3 Aviation sealer works well. There are sealer/lubricate goos for bolts that go into water galleries, dont recall a brand. Permatex products have worked well for me.