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#1 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Fan shroud mounting
It appears that some sort of spacer is needed on the fan shroud screws. I don't know for sure, since my truck was butchered in some areas by the P.O. This is on my 69, 350 w/ a/c.
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#2 |
Account Suspended
Join Date: Mar 2001
Location: Virginia Beach, Va. U.S.A.
Posts: 15,320
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If there were nuts on it for spacers, it sounds like the wrong radiator support brackets are bolted on the radiator support. There shouldn't be any spacers.
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#3 |
Merciless Butcher
Join Date: Oct 2003
Location: CC Nevada
Posts: 1,447
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The bottom of the shroud is attached to the radiator support with clips. I'll post a pic of them if you want.
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#4 | |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
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Quote:
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#5 |
Merciless Butcher
Join Date: Oct 2003
Location: CC Nevada
Posts: 1,447
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clips
The originals were a little bigger. GM discontinued them and replaced them with these.
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#6 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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I took some pictures, hopefully one of y'all can figure out what's not right. There's about a 3/8" gap between the shroud and the upper support. It's a 4 core radiator.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#7 |
Merciless Butcher
Join Date: Oct 2003
Location: CC Nevada
Posts: 1,447
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I think you may need the longer retainers for a four core radiator. Those look like the shorter retainers ( for a three core ). They should sit flat on the radiator. Maybe the pic is just deceiving. Sorry I was'nt able to help.
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#8 |
Registered User
Join Date: Nov 2004
Location: "Under Montana skies."
Posts: 1,836
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That was my first thought, as well, gonebad2. I would follow gb2's advice and count the rad's cores. If you have a 4-core rad, then a previous owner must have installed the rad without also upgrading to 4-core supports. I'm concerned with what the rad's tank bottoms look like in their 3-core rubber cushions and metal rad supports.
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#9 |
Merciless Butcher
Join Date: Oct 2003
Location: CC Nevada
Posts: 1,447
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If you use the 3 core mounts with a 4 core radiator, you run the risk of vibration on metal to metal contact wearing a hole in your radiator.
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#10 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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I found some problems by doing some measuring, old against new. The new radiator is 1/4" wider and taller. The new radiator cushions are 1/8" thicker than the old. Add that up, and there is an additional 1/2" of height. The ribs on the tank were against the core support at the top, took care of that by notching the flange on the core support. I haven't arrived at a solution to the height issue, yet. Need to do some clearance checks with the hood.
Also, the bottom edge of the fan shroud doesn't match up with the core support. Now, while I mutter some words about aftermarket parts. ![]()
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#11 |
Registered User
Join Date: Jan 2004
Location: Elmira, Oregon
Posts: 449
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I'm no small block expert but that looks nothing like the shroud on my big block trucks. It does look a lot closer to a shroud for a later year truck. I can post pics tomorrow if needed.
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#12 |
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Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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The shroud clips on my truck look different, they're bigger and stick out more than the ones gonbad2 posted a pic of. Anyway here's a pic of a 4 core rad. hold down with the correct hex head screw for holding the top of the rad. shroud to it, not sure if it's gonna help you or not. Sorry about the pics, the webcam is all I have to work with right now. FYI these are about 6.5" long, you might wanna measure the ones on your truck and see if they're shorter or not.
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#13 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
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Thanks, Robert. Mine are 6.5" long.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#14 |
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#15 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Thanks a bunch, John. Now I have to wait and hope the weekend weather is good. I was getting ready to start machining some fittings, but a trip to the boneyard is easier.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#16 |
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Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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No problem sir, glad I could help.
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