[Chevyshome]

Merry Christmas to all my fellow Hot Rodders........ from the Great White North........I am wondering who can tell me the difference in the depth between a short water pump and a long water pump........I am considering switching to a long pump to hopefully alleviate a potential cooling problem by having my cooling fan projected closer to the radiator.......I am hoping not to have to install a fan shroud..... as I have a slightly restricted space ......right now I am running with a 19" clutch fan.......anyone out there ever had a similar problem or......would you have an ideal suggestion.........Thanks for taking time to read my inquiry.........Chevy......!

[poncho62]

I dont think its enough to make a difference..probably less than an inch.....Besides, you would have to change all your brackets, alternator to the other side......different bottom pulley....More trouble than its worth unless you have the complete long pump setup.

[Chevyshome]

ok thanks for the response Poncho ............!

[RWENUTS]

Cheapest way is to get a fan spacer.
Aluminum Fan Spacers with Bolts - Speedway Motors, America's Oldest Speed Shop

[Chevyshome]

Thanks for your response......but a spacer won't work on a clutch fan.....!

[cobalt327]

Originally Posted by Chevyshome

Thanks for your response......but a spacer won't work on a clutch fan.....!

There are different length fan clutch assemblies. Check the Specifications chart page 5 for what Hayden has available, there might be something you could use depending on the length you now have.

But a shroud would be the better solution, as far as cooling efficiency goes.

[lakeroadster]

Originally Posted by Chevyshome

... I am wondering who can tell me the difference in the depth between a short water pump and a long water pump........

And here ya go!

[Chevyshome]

and thanks for your response.......I have maximum depth with my short water pump and clutch fan at this time and from what I see......the only option I have is to install a universal fan shroud.....and hopefully thta will do the trick.....we shall see....Chevy ...!

[philzell]

Have you thought about dual electric fans, you will not need a shrowd.

[1971BB427]

And why wont a spacer work on a clutch fan? It simply goes between the pulley and the mounting plate of the clutch, instead of going on the fan. I've used them with clutch fans before and the base doesn't know if it's sitting on a pulley, or a pulley with a spacer.
Just don't go too thick on the spacer when using it with a clutch fan. I'd not go more than 1.5"

[Chevyshome]

I was hoping to stay mechanical but..........as a last resort.........I just may have to consider that option so.......thanks for your response........!

Chevy

[bjautos7]

i will check the clutch fan frist as these do fail and course engine's to run hot. if the engine run fine before then started to get hot it more likey to be the clutch fan it self. swap over fan frist and go from there.

[1971BB427]

Originally Posted by Chevyshome

I was hoping to stay mechanical but..........as a last resort.........I just may have to consider that option so.......thanks for your response........!

Chevy

Mechanical?? I thought you had a clutch fan? What do you mean by staying mechanical? You would keep the clutch fan if you went with a spacer under the clutch fan's base.

[AutoGear]

You should always run a fan shroud

[Chevyshome]

yes..........depending on how close your fan is to the rad........Mine is 5 inches away......I see where Summit and Jegs have Universal shrouds in stock........!

Chevy