Dumb water pump question

[jcode68]

I was watching one of thos backyard mechanic shows this weekend and the guy was changing out a water pump. He made a point to remove the water pump back plate to install a gasket as well as install the gasket between the pump and the timing cover. So here's my dumb question - I already installed my Edelbrock aluminum water pump and did not remove the back plate to install a gasket, I just installed the gasket between pump and timing cover. Do the Edelbrocks come from the factory with the back plate gasket or do I need to remove the WP and do this? I checked Edelbrock's site, but no related info available.

 

[rbohm]

thats only needed on cars where the back of the pump is exposed to the outside of the engine. the back of the small block ford pump is not exposed so you dont need one there.

 

[mustangracer]

It depends on the year, some 289s had them and some didn't. I think it depends on generator versus alternator and alumninum versus cast iron pumps.

But I think it's only necessary if you have the timing cover with no bolt holes at the bottom of the pump, the backing plate is attached to the pump with two shallow head bolts and then they are bolted together to the timing cover.

 

[jcode68]

thats only needed on cars where the back of the pump is exposed to the outside of the engine. the back of the small block ford pump is not exposed so you dont need one there.

The mechanic was working on a Ford F150 truck with a 5.0 litre engine, fuel injected with newer style front cover. My 347 (302 block) is using the old style timing cover and the water pump I used is the original style passenger side outlet. I'm looking for the instructions that came with the pump, but haven't found them yet (would be nice if Edelbrock posted these online...). Appreciate the confirmations guys.

 

[mustangman1974]

Nope its only for the newer setup. They come with 2 gaskets. The onlder style with the backing plate are sealed twice. Once by the backing plate and one time by the gasket to timing cover. The only other reason to open up the waterpump is if its leaking at the back.

 

[finallydragin]

If your water pump came with the plate on it , than the gasket was already installed at the factory .

 

[jcode68]

Thanks for the confirmation guys Seems like I second guess just about everything I bolt on with this project. I have been very careful and detailed every step of the way. I am trying like hell to avoid fuel, oil and water leaks the first time I fire the beast up. Fingers crossed!