Fan Shroud on 73 Z28 - Team Camaro Tech
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post #1 of 9 (permalink) Old Feb 12th, 01, 11:38 AM Thread Starter
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Hello All,
Iím having trouble with the fan shroud on my 73 Camaro Z28 that originally had factory A/C. Itís long to describe but here goes.. I have put a stock fan assembly back on (it had a flex fan w/o clutch assm.). I got this assem. from a 73 Firebird from the junkyard. It is a clutch type assem.( because it had factory A/C) and is the 17Ē fan blade . Now the shroud (a 2 piece unit, top and bottom) will not fit because the fan is too tall for the top shroud piece. Why wonít this fit? Other things that may have a barring on this: the motor mounts have been changed from stock (theyíre chrome and may not be the correct size/ height). Car was in a front end collision some time back be for I owned it, and could the front radiator support be bent so much that it is now so far out of alignment that it has moved down? If this has happened, wouldnít I see things like the fenders and doors not lining up?
As it is now there is about 1-1/2Ē of space from the bottom fan shroud to the blade and the top needs about 1Ē to 1-1/4Ē to fit. I think itís more of the height of the engine (motor mounts) than the radiator support. What do you think?
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post #2 of 9 (permalink) Old Feb 12th, 01, 01:30 PM
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Mark,

You're probably right. I just measured the clutch fan and shroud on my 72. The fan is 18" diameter and the opening on the shroud is 19 3/4". The only thing is you say you have an inch to an inch and a half clearance on bottom and need to lower the top of the fan almost the same amount; that makes it a real tight fit. Mine had about 3/4" clearance top and bottom.

Jody
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post #3 of 9 (permalink) Old Feb 12th, 01, 02:39 PM
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Jody,
All this is correct. Can you tell me how tall (thick) your motor mounts are? From engine to frame? Sure I do want the fan in the center but the main thing now is to get it to fit correctly. A friend said to just go buy a new mount and check if they are the same. If there are the same then I need to find the correct solution. I was thinking about a newer type of motor mount, like a poly type (non- rubber type). Any suggestions?
 
post #4 of 9 (permalink) Old Feb 12th, 01, 03:07 PM
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Mark,

My 72 uses the factory "clamshell" mounts. The piece on the engine is solid steel, and different than an aftermarket mount. Then there is a frame mount with a rubber mount with a steel insert for the bolt to go through.

Jody
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post #5 of 9 (permalink) Old Feb 12th, 01, 05:24 PM
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Jody,
This is true, but still I donít know how thick this mount is or should be? I have pictures and drawing in manuals, but no hard data. How am I to figure out if the mount that is in the car is correct or in-correct?
Mark
post #6 of 9 (permalink) Old Feb 13th, 01, 04:28 AM
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Mark,

I'm not trying to be vague; it's just that if you have an aftermarket mount you have a completely different set-up than me. Is the frame pad the same height? If not, then my mount height won't help you.

I measured from the engine block where the mount bolts to (the upper two bolts) straight down to the sub-frame where the frame pad is bolted on. It's app. 3 1/4". It's tough to get a real accurate measurement as there's a bunch of stuff in the way. Hope this helps.

Jody
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post #7 of 9 (permalink) Old Feb 13th, 01, 06:13 AM Thread Starter
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Jody,
Thanks. Now I have some data to go check. I donít know if the mounts are stock unit that have just been chromed or are something special. But at this point any info. will help. Please donít think that Iím pissed, that is far from the truth. Iím just looking for a car similar to mine that may not be modified or damaged like mine is. Thanks for all the help. This place IS the best. Long live Team Camaro!!
( Even for 2nd Gen.ís)
Mark (A.K.A. Z28 Mark)
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post #8 of 9 (permalink) Old Feb 13th, 01, 07:06 AM
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I'm thinking the shroud you have is for a Pontiac engine which may be taller/lower overall. Also, my 70 has a one piece shroud. Maybe you just have the wrong piece? Also for what it's worth, a late Z28 Camaro electric fan setup will fit almost perfect on the 73 with the bigger radiator.

[This message has been edited by tom3 (edited 02-13-2001).]
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post #9 of 9 (permalink) Old Feb 13th, 01, 07:34 AM Thread Starter
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Hey Tom,
The fan shroud I have is a unit that I purchased from Classic Industries. Also it is the same (at least the top piece) as the unit that was in the trunk when I purchased the car. The only piece that I took from a Firebird was the clutch fan assembly. I even took the fan (it self) from a Camaro (apx. ď75-ď77). Also there are small differences between a 70-72 to the 73. The 73 was the first Z28 to have factory A/C, and my vehicle is this type, all though it has been removed, I hope to have it re installed at some point. The 70-72 used a flex type fan, not a clutch type. But this should not make that much of a difference. It all mounts to the water pump. Thanks for the idea of the electric fan, but I want to keep it ďstock lookingĒ
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