Running HOT! ! ! - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

C20-67_N_MO · 07-11-2011, 03:04 PM

Well I tried installing a clutch fan that Sammy let me try.

But I can't get the long bolts thru the spacer.

Can anyone think what I can try next?

Sammy · 07-11-2011, 03:11 PM

Not sure what your saying. You need longer bolts? Bolts too large to fit? I'm thinking some real long bolts that bolt the entire thing together.

6772owner · 07-11-2011, 03:12 PM

I would NOT run the spacer with the fan/clutch, I tried the first time and it vibrated like crazy! Just put the assembly together without the spacer, there are two different fan clutch lengths available as well. (I found that out after I purchased mine) You want to half the blade exposed from what I know... Hope this helps!

**Stocker** · 07-11-2011, 03:16 PM

Quote:

Originally Posted by 6772owner

I would NOT run the spacer with the fan/clutch

Yep.... I'm running the OEM clutch fan and there is NO spacer.

The distance from the WP to the fan blades is the same as a flex fan WITH the spacer.

C20-67_N_MO · 07-11-2011, 05:09 PM

I can not get the LONG bolts I have not in between the clutch part on the four hole mounting flange. It looks like it will only work with very very short bolts only. If I did that it would be like 2-3" outside of the shroud, which does me no good.

6772owner · 07-11-2011, 06:20 PM

I do believe that the bolts are fairly short with the clutch set up compared the flex fan/spacer. You may look into the clutch for the 4wd/rear most engine position, they are longer than the common one to my knowledge. I agree that the fan should be half in/out of the shroud, not completely uncovered, but I would not sun the spacer with the clutch. It is a lot of weight hanging really far out on the water pump... You might have to go to the Jeep fan in the shroud, get a longer fan shroud or use dual electric fans mounted on the radiator or core support. Just my .02

C20-67_N_MO · 07-11-2011, 06:41 PM

Quote:

Originally Posted by 6772owner

I do beleieve that the bolts are fairly short with the clutch set up compared the flex fan/spacer. You may look into the clutch for the 4wd/rear most engine position, they are longer than the common one to my knowledge. I agree that the fan should be half in/out of the shroud, not completely uncovered, but I would not sun the spacer with the clutch. It is a lot of weight hanging really far out on the water pump... You might have to go to the Jeep fan in the shroud, get a longer fan shroud or use dual electric fans mounted on the radiator or core support. Just my .02

Yeah I went to a local pick-n-pull this AM looking for an electric fan setup, but most where already picked thru. Just might have to bite the bullet and buy a new dual fan setup, as a single on this setup will surely not work correctly.

**Steve Van Gent** · 07-11-2011, 07:44 PM

My vote is radiator. Been there, done that. Replaced fan with manual, hoses, thermostat, pump, flushed radiator, did flow test, blew gunk out of fins with power washer, etc. Finally, out of sheer frustration, bought new radiator - shazam! instantly solved. They just slowly plug up over time, get less efficent at cooling. still flowed just fine, simply would not cool...

C20-67_N_MO · 07-11-2011, 10:26 PM

Yeah I might go clean and flush the raditor before investing in a new one to see if that solves my problem.

But not until I get this fan deal fixed.

May try to install this clutch fan w/o the spacer and see how it performs and go from there.

Hubscrub · 07-11-2011, 10:33 PM

the clutch fan is held on by screw in studs, that screw into the water pump (available at the part store) and hold the fan on with lock washer and nuts. Also thats looks to be a later model fan i had one like it but it wouldn't fit in my shroud so i ordered me one from summit for my 71 to replace the flex fan. i would not use a spacer on a clutch fan either.

firedog · 07-11-2011, 11:03 PM

I suggest a 4 row and electric fan, that's what I have and my truck runs no more then 190 not sure about cooling an olds big block but works great on my sbc
Posted via Mobile Device

firedog · 07-11-2011, 11:12 PM

And there is an xtra Fan in the garage at sammy's out of a mid 90's firebird that is just like what is in my truck.
Posted via Mobile Device

C20-67_N_MO · 07-12-2011, 08:26 AM

firedog - Sammy did show me your setup (even though it was dark) and yes mine is a 4-row raditor as well.

Yeah right now I am in need of a dual fan setup as I am almost 100% certain this clutch fan will not fit inside the shroud and cool correctly.

Sounds like I need to go back to the source (Sammy) and see what we can work out on that electric fan he has and what it will take for him to part with it.

C20-67_N_MO · 07-13-2011, 08:38 PM

Well I tried installing the clutch fan today and found out it was too big for my fan shround.

So a friend of mine had an electric fan so I somewhat got it installed. (meaning I could not get all the mounting zip tie thru the raditor and A/C condensor.) Didn't have all the parts I needed for the wiring so will try again tomorrow.

Hubscrub · 07-13-2011, 09:30 PM

That fan is for a later model, i ordered a fan and clutch from summit 16'' maybe? i just mesured my shroud before i ordered, does great. just a thought if ya need it.

C20-67_N_MO · 07-14-2011, 11:30 AM

I'll keep you in mind if this other setup doesn't work out.

Thanks!

C20-67_N_MO · 07-16-2011, 05:56 PM

Well I got a small cheap electric fan installed and it seems to cool better than that flex fan did.

I'd rather be running a nice clutch fan setup, but for now this will work.

Thanks for everyone's input it was appreciated.

07-11-2011, 03:04 PM	#26
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! Well I tried installing a clutch fan that Sammy let me try. But I can't get the long bolts thru the spacer. Can anyone think what I can try next? Attached Images __________________ Coming Soon: Project 1970 Country Truck

07-11-2011, 03:11 PM	#27
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: Running HOT! ! ! Not sure what your saying. You need longer bolts? Bolts too large to fit? I'm thinking some real long bolts that bolt the entire thing together. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

07-11-2011, 03:12 PM	#28
6772owner Gearhead Join Date: Jan 2008 Location: Colorado Posts: 1,193	Re: Running HOT! ! ! I would NOT run the spacer with the fan/clutch, I tried the first time and it vibrated like crazy! Just put the assembly together without the spacer, there are two different fan clutch lengths available as well. (I found that out after I purchased mine) You want to half the blade exposed from what I know... Hope this helps! __________________ 2002 Saturn SL2, My D/D 2019 Ford Fusion SE, Ecoboost - Wife's D/D 1993 Camaro Z28, A4, CAI, Cat-Back Exhaust Project C10 (my 72' C10 w/96' LT1, 700R4, bagged F&R, 18's (for now), Short/Fleet) -- SOLD! Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=313644

07-11-2011, 05:09 PM	#30
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! I can not get the LONG bolts I have not in between the clutch part on the four hole mounting flange. It looks like it will only work with very very short bolts only. If I did that it would be like 2-3" outside of the shroud, which does me no good. __________________ Coming Soon: Project 1970 Country Truck

07-11-2011, 06:20 PM	#31
6772owner Gearhead Join Date: Jan 2008 Location: Colorado Posts: 1,193	Re: Running HOT! ! ! I do believe that the bolts are fairly short with the clutch set up compared the flex fan/spacer. You may look into the clutch for the 4wd/rear most engine position, they are longer than the common one to my knowledge. I agree that the fan should be half in/out of the shroud, not completely uncovered, but I would not sun the spacer with the clutch. It is a lot of weight hanging really far out on the water pump... You might have to go to the Jeep fan in the shroud, get a longer fan shroud or use dual electric fans mounted on the radiator or core support. Just my .02 __________________ 2002 Saturn SL2, My D/D 2019 Ford Fusion SE, Ecoboost - Wife's D/D 1993 Camaro Z28, A4, CAI, Cat-Back Exhaust Project C10 (my 72' C10 w/96' LT1, 700R4, bagged F&R, 18's (for now), Short/Fleet) -- SOLD! Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=313644 Last edited by 6772owner; 07-12-2011 at 09:28 AM. Reason: text

07-11-2011, 07:44 PM	#33
Steve Van Gent Senior Member Join Date: Feb 2009 Location: Redding, Ca Posts: 333	Re: Running HOT! ! ! My vote is radiator. Been there, done that. Replaced fan with manual, hoses, thermostat, pump, flushed radiator, did flow test, blew gunk out of fins with power washer, etc. Finally, out of sheer frustration, bought new radiator - shazam! instantly solved. They just slowly plug up over time, get less efficent at cooling. still flowed just fine, simply would not cool...

07-11-2011, 10:26 PM	#34
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! Yeah I might go clean and flush the raditor before investing in a new one to see if that solves my problem. But not until I get this fan deal fixed. May try to install this clutch fan w/o the spacer and see how it performs and go from there. __________________ Coming Soon: Project 1970 Country Truck

07-11-2011, 10:33 PM	#35
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: Running HOT! ! ! the clutch fan is held on by screw in studs, that screw into the water pump (available at the part store) and hold the fan on with lock washer and nuts. Also thats looks to be a later model fan i had one like it but it wouldn't fit in my shroud so i ordered me one from summit for my 71 to replace the flex fan. i would not use a spacer on a clutch fan either. __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

07-11-2011, 11:03 PM	#36
firedog Registered User Join Date: Jun 2000 Location: Festus, Missouri Posts: 1,005	Re: Running HOT! ! ! I suggest a 4 row and electric fan, that's what I have and my truck runs no more then 190 not sure about cooling an olds big block but works great on my sbc Posted via Mobile Device __________________ SOLD 1968 Chevy SWB Fleet 350/350 combo Tach/tilt/buddy buckets Bagged/18" Wheels Black on Black Project "Pandemic" the Farm Rat 1927 Chevy Capitol Truck Rat rod '30 Model A Frame Dual Carb 5.3 LS http://www.67-72chevytrucks.com/vboa...d.php?t=804162 2007 GMC 4 DOOR 2WD BUILT 5.3 STAGE 3 CAM 93 TUNE LIFTED 22X12 WHEELS 33" TIRES 2023 Jeep RENEGADE Wifes ride

07-11-2011, 11:12 PM	#37
firedog Registered User Join Date: Jun 2000 Location: Festus, Missouri Posts: 1,005	Re: Running HOT! ! ! And there is an xtra Fan in the garage at sammy's out of a mid 90's firebird that is just like what is in my truck. Posted via Mobile Device __________________ SOLD 1968 Chevy SWB Fleet 350/350 combo Tach/tilt/buddy buckets Bagged/18" Wheels Black on Black Project "Pandemic" the Farm Rat 1927 Chevy Capitol Truck Rat rod '30 Model A Frame Dual Carb 5.3 LS http://www.67-72chevytrucks.com/vboa...d.php?t=804162 2007 GMC 4 DOOR 2WD BUILT 5.3 STAGE 3 CAM 93 TUNE LIFTED 22X12 WHEELS 33" TIRES 2023 Jeep RENEGADE Wifes ride

07-12-2011, 08:26 AM	#38
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! firedog - Sammy did show me your setup (even though it was dark) and yes mine is a 4-row raditor as well. Yeah right now I am in need of a dual fan setup as I am almost 100% certain this clutch fan will not fit inside the shroud and cool correctly. Sounds like I need to go back to the source (Sammy) and see what we can work out on that electric fan he has and what it will take for him to part with it. __________________ Coming Soon: Project 1970 Country Truck

07-13-2011, 08:38 PM	#39
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! Well I tried installing the clutch fan today and found out it was too big for my fan shround. So a friend of mine had an electric fan so I somewhat got it installed. (meaning I could not get all the mounting zip tie thru the raditor and A/C condensor.) Didn't have all the parts I needed for the wiring so will try again tomorrow. __________________ Coming Soon: Project 1970 Country Truck

07-13-2011, 09:30 PM	#40
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: Running HOT! ! ! That fan is for a later model, i ordered a fan and clutch from summit 16'' maybe? i just mesured my shroud before i ordered, does great. just a thought if ya need it. Attached Images __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

07-14-2011, 11:30 AM	#41
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! I'll keep you in mind if this other setup doesn't work out. Thanks! __________________ Coming Soon: Project 1970 Country Truck

07-16-2011, 05:56 PM	#42
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Running HOT! ! ! Well I got a small cheap electric fan installed and it seems to cool better than that flex fan did. I'd rather be running a nice clutch fan setup, but for now this will work. Thanks for everyone's input it was appreciated. __________________ Coming Soon: Project 1970 Country Truck



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