Radiator Shroud Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1969C/10 · 09-30-2006, 04:00 PM

Since my 350 is in the I6 position the fan doesn't really fit in the shroud. My shroud has some cracks and most of the bottom is busted out. Is this shroud doing any good at all? If not I will just take it off and pitch it until I get a new one. Thanks.

Longhorn Man · 09-30-2006, 04:20 PM

it's pretty much doin nothing... you could put a spacer on the fan to put it up in there... but that's about a 4 or 5 inch reach, might be a bit extreem.
Even though I know it is wrong, I have had 3 trucks, and NONE of them ran with shrouds... none of them overheated either... even in the Tx heat, and I drove 70+ all day every day there... 100 MPH was not uncommon for me in those days. Even the cad 500 in the thick ohio humidity ... never even considers overheating.
The shroud is an important part of the cooling system, but yours is doing nothing.

**VetteVet** · 09-30-2006, 05:11 PM

Your fan should be just inside the shroud anyway to be effective and as LM said it isn't doing much. I see you have a three or four core radiator so you shouldn't have any problems without it. The PO of my truck never ran on and it only heated up when idling for a long time in parades, and then not too much to overheat. It's a three core. I wonder if you have a big block shroud instead of a short block one. I'm not sure which one is the deeper. It is better to run a shroud but if you don't hit heavy slow traffic or idle for long periods you should be fine.

1969C/10 · 09-30-2006, 05:11 PM

Well I might as well take mine off then. Thanks Andy!

junkyardjohn · 09-30-2006, 05:26 PM

I'M FROM THE OTHER CAMP. ANY SCHROUD IS BETTER THAN NO SCHROUD AT ALL. BELIEVE ME... IF YOU DIDN'T NEED THEM ALL OF THE AUTO MAKERS WOULD NOT HAVE SPENT GAZILLIONS OF DOLLARS INSTALLING THEM ON DARN NEAR EVERY VEHICAL MADE IN THE LAST 50 YEARS. I LIKE MY FAN TO BE 1/2 IN & 1/2 OUT OF THE SCHROUD. THIS IS WHAT I CONSIDER A PERFECT SENARIO & AN INCH EITHER WAY ISN'T GOING TO MAKE ANY BIG DIFFERENCE. FAN SHCROUDS AREN'T EXPENSIVE OR HARD TO FIND. I'D LEAVE THAT ONE ALONE UNTIL YA GET ANOTHER ONE. HEY.. EVEN IF ITS DOING NOTHING BUT KEEPING YOUR FINGERS OR TOOLS OUT OF THE BLADES. THERE WILL BE ONE ON THE PARTS BOARD ANY TIME FOR $30 OR $40 JUST MY 2 CENTS.

JOHN

Mechdawg · 09-30-2006, 08:18 PM

I mounted my 327 in the I6 location and ran into the same probelm with my fan not coming close to the shroud. I got an electric fan off of ebay from a late model vette also picked up a new adjustable temp sensor switch for it off of ebay. As for the shroud Im currently building one out of an old aluminum road work sign. Since my truck isnt on the road yet and wont be for a few more months I cant tell you how well this set up will or wont work out.

**kwmech** · 09-30-2006, 10:31 PM

Look for a 4wd small block shroud, they were about 5-6'' deeper since the engine was just about against the firewall from the factory

1969k10stepside · 09-30-2006, 10:32 PM

Would a shroud off a 4x4 work?

**kwmech** · 09-30-2006, 10:36 PM

Beat ya to it

1969k10stepside · 09-30-2006, 10:38 PM

LOl.Didnt even notice you posted.

_Dick_ · 09-30-2006, 11:15 PM

in fla no shroud with AC, one electric fan never over heats just an FYI

Willy Prost · 10-01-2006, 02:13 PM

I once had a 72 Monte Carlo. This car had the 116" wheelbase, but the car had a longer hood than the 112" Malibu. Chevy made up fo it by having a 4" extension spacer at the end of the fan shroud to reach the fan.

Maybe you could fab an extension to cover the distance fron the existing shroud to the fan?

09-30-2006, 04:00 PM	#1
1969C/10 Unskilled Labor Join Date: Jul 2006 Location: OH-IO Posts: 788	Radiator Shroud Questions Since my 350 is in the I6 position the fan doesn't really fit in the shroud. My shroud has some cracks and most of the bottom is busted out. Is this shroud doing any good at all? If not I will just take it off and pitch it until I get a new one. Thanks. __________________ 1986 K/20, 350/TH400, My First 4x4.......

09-30-2006, 04:20 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: Radiator Shroud Questions it's pretty much doin nothing... you could put a spacer on the fan to put it up in there... but that's about a 4 or 5 inch reach, might be a bit extreem. Even though I know it is wrong, I have had 3 trucks, and NONE of them ran with shrouds... none of them overheated either... even in the Tx heat, and I drove 70+ all day every day there... 100 MPH was not uncommon for me in those days. Even the cad 500 in the thick ohio humidity ... never even considers overheating. The shroud is an important part of the cooling system, but yours is doing nothing.

09-30-2006, 05:11 PM	#3
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: Radiator Shroud Questions Your fan should be just inside the shroud anyway to be effective and as LM said it isn't doing much. I see you have a three or four core radiator so you shouldn't have any problems without it. The PO of my truck never ran on and it only heated up when idling for a long time in parades, and then not too much to overheat. It's a three core. I wonder if you have a big block shroud instead of a short block one. I'm not sure which one is the deeper. It is better to run a shroud but if you don't hit heavy slow traffic or idle for long periods you should be fine. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

09-30-2006, 05:11 PM	#4
1969C/10 Unskilled Labor Join Date: Jul 2006 Location: OH-IO Posts: 788	Re: Radiator Shroud Questions Well I might as well take mine off then. Thanks Andy! __________________ 1986 K/20, 350/TH400, My First 4x4.......

09-30-2006, 05:26 PM	#5
junkyardjohn Registered User Join Date: Aug 2001 Location: SOMERSET KY. Posts: 6,425	Re: Radiator Shroud Questions I'M FROM THE OTHER CAMP. ANY SCHROUD IS BETTER THAN NO SCHROUD AT ALL. BELIEVE ME... IF YOU DIDN'T NEED THEM ALL OF THE AUTO MAKERS WOULD NOT HAVE SPENT GAZILLIONS OF DOLLARS INSTALLING THEM ON DARN NEAR EVERY VEHICAL MADE IN THE LAST 50 YEARS. I LIKE MY FAN TO BE 1/2 IN & 1/2 OUT OF THE SCHROUD. THIS IS WHAT I CONSIDER A PERFECT SENARIO & AN INCH EITHER WAY ISN'T GOING TO MAKE ANY BIG DIFFERENCE. FAN SHCROUDS AREN'T EXPENSIVE OR HARD TO FIND. I'D LEAVE THAT ONE ALONE UNTIL YA GET ANOTHER ONE. HEY.. EVEN IF ITS DOING NOTHING BUT KEEPING YOUR FINGERS OR TOOLS OUT OF THE BLADES. THERE WILL BE ONE ON THE PARTS BOARD ANY TIME FOR $30 OR $40 JUST MY 2 CENTS. JOHN __________________ junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE. THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES// LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST

09-30-2006, 08:18 PM	#6
Mechdawg Registered User Join Date: Jul 2002 Location: Dover AFB Delaware Posts: 159	Re: Radiator Shroud Questions I mounted my 327 in the I6 location and ran into the same probelm with my fan not coming close to the shroud. I got an electric fan off of ebay from a late model vette also picked up a new adjustable temp sensor switch for it off of ebay. As for the shroud Im currently building one out of an old aluminum road work sign. Since my truck isnt on the road yet and wont be for a few more months I cant tell you how well this set up will or wont work out.

09-30-2006, 10:31 PM	#7
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	Re: Radiator Shroud Questions Look for a 4wd small block shroud, they were about 5-6'' deeper since the engine was just about against the firewall from the factory

09-30-2006, 10:32 PM	#8
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Radiator Shroud Questions Would a shroud off a 4x4 work? Last edited by 1969k10stepside; 09-30-2006 at 10:38 PM.

09-30-2006, 10:36 PM	#9
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	Re: Radiator Shroud Questions Beat ya to it

09-30-2006, 10:38 PM	#10
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Radiator Shroud Questions LOl.Didnt even notice you posted.

09-30-2006, 11:15 PM	#11
_Dick_ PROUD TO BE A MEMBER Join Date: Sep 2005 Location: Jax Florida Posts: 234	Re: Radiator Shroud Questions in fla no shroud with AC, one electric fan never over heats just an FYI

10-01-2006, 02:13 PM	#12
Willy Prost Senior Member Join Date: Jan 2000 Location: Arlington, VA Posts: 398	Re: Radiator Shroud Questions I once had a 72 Monte Carlo. This car had the 116" wheelbase, but the car had a longer hood than the 112" Malibu. Chevy made up fo it by having a 4" extension spacer at the end of the fan shroud to reach the fan. Maybe you could fab an extension to cover the distance fron the existing shroud to the fan?



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