What fan shroud will work? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ryans69chevy · 07-07-2016, 01:26 PM

Just curious if I'm doing this right, I searched through threads and found a couple answers, but just making sure.

I bought a 454 out of a '73 or '74 chevy scottsdale a few years back that I'm going to put into my '69. I'm using the '69 chevy radiator core support and a 4 row radiator for my '69. I'm going to use the mechanical fan with thermal clutch so my question is what fan shroud do I use? I'm also using 68-71 bbc engine stands.

Do I need a fan shroud from a 67-72 or would I need one from the 73 or 74 truck? Or would either work?

Thanks,
Ryan

**kwmech** · 07-07-2016, 02:13 PM

67--72 shroud is thinner, but if you use the later long water pump, it is going to put the blade even closer to the radiator making the shroud kind of useless

ryans69chevy · 07-07-2016, 06:32 PM

Yes I am planning on using the long water pump. So does that mean the 73 model shroud would be useless?

ryans69chevy · 07-08-2016, 09:11 PM

Might just take the gamble and buy one from a 73 and see if it drops in... Anyone have any experience with this?

**kwmech** · 07-08-2016, 09:15 PM

Quote:

Originally Posted by ryans69chevy

Might just take the gamble and buy one from a 73 and see if it drops in... Anyone have any experience with this?

Personally no, I always manage to find the right parts for my conversions. A lot of people have run the longer pumps but it seems most turn to the electric fans for the cooling

**dennislbrooks** · 07-08-2016, 09:43 PM

On my 402 in my 67 which I moved an inch forward, I ran a short pump, fan clutch and fan and trimmed my stock smallblock fan shroud. I did not want to purchase a new one for a bbc that I did not know if it fit any better.
The fan sets 2/3 in the fan shroud -- a little farther than normal but my 5 blade fan is a little over an inch from the radiator.

DJ_Baar · 07-08-2016, 10:07 PM

I was considering electric thermostatically controlled fans on my '67 w/350 - less drag on engine?

midniteblues · 07-09-2016, 01:17 PM

I pulled fan shrouds and fans from Chevrolet vans they seem to fit sbc trucks just fine and let you use the bigger fan.
I don't know if they fit a bb though never tried since I used a oe bb shroud.

I also used a lwp on my BBC in and on the correct mounts and it pushed the fan way too close too the rad and the alt and ps pulleys were awfully close too the shroud. I switched too a correct swp set up since.

I saw others make it work though.
Electrics do save ya some real feel seat of the pants power though. I noticed this when I put Electrics in the Camaro and replaced the power robbing dangerous flex fan. It being a manual shift just at idle you can feel less drag on the engine.

ryans69chevy · 07-10-2016, 01:33 PM

I'm gonna give it a try with my LWP, but if I run into the same problem as you I will look into changing over to a SWP. I'm still a little ways from doing this. Just trying to get everything planned out and find the right parts.

**Grumpy old man** · 07-10-2016, 02:48 PM

I have the GM 341789 71^ chevy van shroud if someone needs it .

ryans69chevy · 07-10-2016, 11:50 PM

Post up a pic. I might be interested. I guess the only thing that sucks about these is the cost to ship... What are you asking for it?

07-07-2016, 01:26 PM	#1
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	What fan shroud will work? Just curious if I'm doing this right, I searched through threads and found a couple answers, but just making sure. I bought a 454 out of a '73 or '74 chevy scottsdale a few years back that I'm going to put into my '69. I'm using the '69 chevy radiator core support and a 4 row radiator for my '69. I'm going to use the mechanical fan with thermal clutch so my question is what fan shroud do I use? I'm also using 68-71 bbc engine stands. Do I need a fan shroud from a 67-72 or would I need one from the 73 or 74 truck? Or would either work? Thanks, Ryan

07-07-2016, 02:13 PM	#2
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,628	Re: What fan shroud will work? 67--72 shroud is thinner, but if you use the later long water pump, it is going to put the blade even closer to the radiator making the shroud kind of useless

07-07-2016, 06:32 PM	#3
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Re: What fan shroud will work? Yes I am planning on using the long water pump. So does that mean the 73 model shroud would be useless?

07-08-2016, 09:11 PM	#4
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Re: What fan shroud will work? Might just take the gamble and buy one from a 73 and see if it drops in... Anyone have any experience with this?

07-08-2016, 09:43 PM	#6
dennislbrooks Senior Member Join Date: Feb 2004 Location: Williamsburg, Ohio Posts: 1,798	Re: What fan shroud will work? On my 402 in my 67 which I moved an inch forward, I ran a short pump, fan clutch and fan and trimmed my stock smallblock fan shroud. I did not want to purchase a new one for a bbc that I did not know if it fit any better. The fan sets 2/3 in the fan shroud -- a little farther than normal but my 5 blade fan is a little over an inch from the radiator. __________________ 1942 Chevy 1/2 ton Rod, 1959 GMC 1/2 ton Fleet Stepside, 1967 Chevy SWB K10, 1985 Corvette Coupe 4+3, 2015 Chevy Duramax reg cab 4WD W/T

07-08-2016, 10:07 PM	#7
DJ_Baar Registered User Join Date: Jul 2016 Location: New Orleans Posts: 362	Re: What fan shroud will work? I was considering electric thermostatically controlled fans on my '67 w/350 - less drag on engine?

07-09-2016, 01:17 PM	#8
midniteblues Registered User Join Date: Jul 2011 Location: strausstown pa Posts: 3,394	Re: What fan shroud will work? I pulled fan shrouds and fans from Chevrolet vans they seem to fit sbc trucks just fine and let you use the bigger fan. I don't know if they fit a bb though never tried since I used a oe bb shroud. I also used a lwp on my BBC in and on the correct mounts and it pushed the fan way too close too the rad and the alt and ps pulleys were awfully close too the shroud. I switched too a correct swp set up since. I saw others make it work though. Electrics do save ya some real feel seat of the pants power though. I noticed this when I put Electrics in the Camaro and replaced the power robbing dangerous flex fan. It being a manual shift just at idle you can feel less drag on the engine. __________________ 81 camaro 355 4/spd 342 posi my first love. 67 swb step 454/4spd ott 373 posi 4/7 drop. 2000 s10 zr2 little blue truck that never gets stuck. '74 heald super bronc vt8. tecumseh powered moon rover.

07-10-2016, 01:33 PM	#9
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Re: What fan shroud will work? I'm gonna give it a try with my LWP, but if I run into the same problem as you I will look into changing over to a SWP. I'm still a little ways from doing this. Just trying to get everything planned out and find the right parts.

07-10-2016, 02:48 PM	#10
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	Re: What fan shroud will work? I have the GM 341789 71^ chevy van shroud if someone needs it . __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

07-10-2016, 11:50 PM	#11
ryans69chevy Registered User Join Date: Sep 2010 Location: Casselton, North Dakota 58012 Posts: 1,082	Re: What fan shroud will work? Post up a pic. I might be interested. I guess the only thing that sucks about these is the cost to ship... What are you asking for it?



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