Is there diferences between aluminum and cast iron water pumps?

[fuzzman]

I have been in contact with edelbrock on the issue with the alternator bracket and they suggested to use an after market bracket that year one sells and when you look it up it mentions for use with aluminum water pump so, the gest of the problem is when you use this bracket you are sticking the alternator out at least a 1/4 in. which in turn throws the rest of the pulleys out of whack. so my question is would using a billit set of pulleys with the aluminum water pump solve this issue? When I say billit pulleys I mean like the small block double pulley for the water pump and a triple pulley for the vibration damper or crack pulley. Any body got any ideas? I'm trying to figure a way for all these pulleys to be in line? This is all caused from the set of heads sticking out to far.

Pat Faley
1967 Barracuda notch back
Peoria IL

 

[damnimcooltom]

The water inlet on the aluminum water pump is on the other side. It won't work with your radiator without some rerouting of the lower hose, if possible.

 

[D-mailman]

Yes,..one is made of aluminum and the other...cast iron . LOL Could not resist.LOL.

 

[waggin]

casat iron is for 67 and earlier i believe and the outlet is on the drivers side,aluminum is on the passenger side and comes in high flow and standard,I have had overheating problems with the high flow but slowed down the water with the standard and problem solved.

 

[scamp 408]

the cast iron is shorter and requires diff pulleys

 

[D-mailman]

Oh and the cast iron one is heavier too, LOL.

 

[autoxcuda]

the cast iron is shorter and requires diff pulleys

And requires different power steering brackets.

Maybe different alternator brackets. Can someone confirm or deny that?

 

[damnimcooltom]

The alternator brackets are different, for sure. Just slightly.

 

[scamp 408]

I was able to use 70 an up alt brackets but I simce went back to the older style.

 

[RustyRatRod]

The cast iron piece either has one bolt hole missing, or an extra bolt hole from aluminum....I cannot remember which. They will interchange, but there is that difference in the number of attaching bolts.

 

[autoxcuda]

I was able to use 70 an up alt brackets but I simce went back to the older style.

What your Denso alternator application or designation (109 mm, 131mm, etc)??

What amps is it rated at?

 

[scamp 408]

What your Denso alternator application or designation (109 mm, 131mm, etc)??

What amps is it rated at?

90 amp and I mod the bracket to fit not to bad of a job though.