long vice short water pump

[vjjack04]

Folks,
I have posted on this before, but now need some more info. I was planning going with my long water pump, but had to move my motor .5 inches forward, now it really looks like the long water pump and set up is really close - using the stock radiator and position...anybody done this (using the long water pump with the stock radiator)...? If I have to get to the short pump, I will have to figure a new way for my alternator bracket - I wanted to run the alt and the power steering pump in low positions (alt on passenger side, p/s pump on driver's side)....I am interested in suggestions....

[mr48chev]

They probably will need to know what fan setup you are running and a photo or two always helps.

[vjjack04]

Originally Posted by mr48chev

They probably will need to know what fan setup you are running and a photo or two always helps.

Yep, I am interested in folks who are currently using the stock radiator setup with the long water pump - interested in what type fan, if a standard or electric.
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[1project2many]

I used a radiator from an LCF GMC in my truck which placed the end of the water pump shaft about 3/8" from the radiator even though it's a short shaft pump. A mechanical fan is out of the question. I used a stock 12" GM electric fan on the front of the radiator. I haven't had any troubles with it since I built it in '93.

[vjjack04]

Originally Posted by 1project2many

I used a radiator from an LCF GMC in my truck which placed the end of the water pump shaft about 3/8" from the radiator even though it's a short shaft pump. A mechanical fan is out of the question. I used a stock 12" GM electric fan on the front of the radiator. I haven't had any troubles with it since I built it in '93.

Interesting. So you put that radiator (It is probably obvious to anyone else, but I don't know what LCF is) in the stock location? Do you have pictures of how it is mounted? Now this was with a short pump, right?

[OrrieG]

long water pump, big truck radiator in stock 6 cylinder location, mid 70's fan shroud, after market aluminum fan. Fan required 1" shim to center in shroud. leaves about 3-4" clear to radiator. If your radiator is in the stock v-8 location a short water pump will work, that is what they came with. Long water pump crowds the radiator.

[1project2many]

LCF is Low Cab Forward, 2 ton? and up.


My truck's an original V8 so the radiator is maybe 5" closer to a V8 engine than the 6 cyl truck mounting location. The radiator mounting brackets were modified so the radiator would fit in the stock 1/2T Chevy location.

Hmm... looks like the radiator isn't as close as I remember. Guess that means I'm officially getting old. But I do know the angle of the fan and the angle of the radiator weren't the same and there wasn't enough room for the fan at the bottom. Maybe that's where the 3/8" comes from.

[_Ogre]

post some pics up
i run a stock radiator and long pump
i have a lot of room

[_Ogre]

oops, double post

[vjjack04]

Originally Posted by _Ogre

oops, double post

OK. I will "mock up" my radiator and support next weekend, but I think I am way too close....but I appreciate the pictures and info...

[vjjack04]

Here's some pictures - I measured this, it looks closer in the pictures - it is about 1/2 inch. I could make it work...I would have to put an electric fan on the front......the x-like metal rods seem to be in the way (not in the pics).

[drivea55]

Mine is that close and alls i did was stagger two electric fans. test drove it a few times and it seems to be ok.

[vjjack04]

Originally Posted by drivea55

Mine is that close and alls i did was stagger two electric fans. test drove it a few times and it seems to be ok.

I saw yours and you are using a later model radiator - I have the stock one. Would a later modek be narrower, but still cool effectively? Also, what fans are those you have?

[1project2many]

Does that pulley have countersunk bolts? I can't see any bolt heads.

A Ford Taurus fan is a great choice for a lot of vehicles but I don't know if it will fit with stock X braces. BMW uses some small fans that aren't too deep and move a lot of air. I've used those for projects.

[vjjack04]

Originally Posted by 1project2many

Does that pulley have countersunk bolts? I can't see any bolt heads.

A Ford Taurus fan is a great choice for a lot of vehicles but I don't know if it will fit with stock X braces. BMW uses some small fans that aren't too deep and move a lot of air. I've used those for projects.

Yes, it does have counter sunk bolts. I am considering looking at radiators in my local salvage yard....I will take some measurements on the support bracket and see what I can do.

[_Ogre]

your motor must be way forward from the stock location.
check out your radiator mount, it looks like tour radiator is moved back and tilted compared to mine.
a radiator shop might be able to move it forward on the mount.
my truck was an original v8 truck, maybe the I6 radiator was back a little

[vjjack04]

Originally Posted by _Ogre

your motor must be way forward from the stock location.
check out your radiator mount, it looks like tour radiator is moved back and tilted compared to mine.
a radiator shop might be able to move it forward on the mount.
my truck was an original v8 truck, maybe the I6 radiator was back a little

When you say way forward, it is about 1/2 inch forward of what is likely the stock location - as I have about 3/4 clearance of the firewall. The radiate is tilted slightly but it looks factory. I did notice, that compared to other pictures your engine seemed pretty far back. That is a long water pump on yours, right?

[vjjack04]

Originally Posted by _Ogre

your motor must be way forward from the stock location.
check out your radiator mount, it looks like tour radiator is moved back and tilted compared to mine.
a radiator shop might be able to move it forward on the mount.
my truck was an original v8 truck, maybe the I6 radiator was back a little

Also, aren't you using a camaro or other GM front end...would that reposition the engine some?

The pic shows were the engine is positioned...

[_Ogre]

i just pulled the ramjet specs out to make sure that i wasn't misleading you, yes it is a long water pump.
i'm running a fatman mustII x-member on mine.
here's the best picture i could find of the firewall clearances
the bump out in back is for 2 big plugs that come out of the back of my distributor.



your motor mounts look about the same as mine on the centerline of the x-member
check out the radiator location in this pic and compare it to yours



i know the 58-9 rad support is different, not sure how much.

[vjjack04]

Originally Posted by _Ogre

i just pulled the ramjet specs out to make sure that i wasn't misleading you, yes it is a long water pump.
i'm running a fatman mustII x-member on mine.
here's the best picture i could find of the firewall clearances
the bump out in back is for 2 big plugs that come out of the back of my distributor.

your motor mounts look about the same as mine on the centerline of the x-member
check out the radiator location in this pic and compare it to yours

i know the 58-9 rad support is different, not sure how much.

Orge, thanks. I am not sure what the deal is as you are right, there's a difference, but we seem to be within an acceptable tollerance. I did notice that the radiator is tilted (on mine) but it seems to be factory to compensate for the way the front support sits. I am going to look at it closer when i get home. Regardless, I am now considering a different radiator....