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Longest FAN spacer on AMC? |
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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Posted: Mar/22/2018 at 2:15pm |
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On my project I could use a deeper fan-spacer ,now using 2-5/8 is there a 3" on longer hood cars of older years.? OR can I stack a ONE INCH spacer in front of the 2-5/8 and not compromise the bearing in the water pump.? Any ideas , thanks.
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9081 |
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Well, where is the fan blade edges located in the shroud. Stock should be pretty much optimum. Any movement forward will cause air to recirculate on the outer corners of the radiator as draw will only pull from the inside radius of the fan. Having the fan located where the back of the blades ar even with the opening of the shroud will pull at maximum.
GM used a more advanced design where the shroud had a deeper venturi to allow more pull on complete surface area, by allowing the fan to be further away from the radiator. Thus increasing efficency. Too close lowers cooling efficency if the enclosure around the fan is not proper for such distance. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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Fan now sits 1/3 into shroud... I'd prefer 1/2 in 1/2 out as other factory late models I've seen and Street Rods etc...This is not stock location on my radiator.
I know 1/3 fan- in -shroud should be fine,, but while I'm doing a fit I want to get max- air movement. |
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9081 |
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Donno, you may see if a large body 304 automatic with A/C spacer is closer. It seems to me they are fairly long, but i do not have my original anymore to measure. Maybe someone can provide info on such spacer by measuring. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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Lyle
AMC Addicted Joined: Jul/17/2014 Location: None Status: Offline Points: 772 |
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Measure your bolt circle dimension before ordering, but this should fit:
https://www.summitracing.com/int/parts/aaf-all30190/overview/
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Fluffy73
AMC Addicted Joined: Nov/21/2007 Location: Castlegar, BC Status: Offline Points: 3059 |
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Are we going for stock or a resto-mod?
If restomod, do yourself a favour and just get an electric fan. |
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I am genetically incapable of being Politically Correct.
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bbgjc
AMC Addicted Joined: Nov/24/2009 Location: No.VA Status: Offline Points: 1657 |
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I have a pile of them at the shop. I'll measure them and see if there's a 3 inch version for you.
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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New idea,, considering extending the shroud LIP 1/2 " using light weight alum riveted to inside of the shroud.That will keep the factory spacer within spec of AMC ( not to beat-up the water-pump bearing) with 5/8" longer spacer if I stack two. That will give me 50%in & 50% out of shroud
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9081 |
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That can work as long as you don't mind modifying your shroud. I actually thought about adding that to my reply, but thought it was something you may not want to do for appearances sake. If thin enough, i would fold it over, so it will have a smooth edge, like a lip. It will also mount sandwiching the lip of the shroud. The diameter of the opening maybe large enough not to kink or crease the aluminium as your arc it around the circumference. Edited by 304-dude - Mar/23/2018 at 2:44pm |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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cadipacer
AMC Nut Joined: Apr/22/2009 Location: louisville KY Status: Offline Points: 368 |
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There's no concern on altering the shroud as the car is a 4 dr and now has a 401,,not like Im keeping it stock,, ONLY the outside is stock to view. The lip fits the inner-shroud very good and conforms to the arc. |
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SOLD!/SOLD!78 Pacer wagon w/ 500 cid Cadillac V8, 2:87 spool.
1956 Nash Statesman.PS,PB AC 360 rack & pin.2:56 gears. 1982 Concord 401 4 dr. incognito former-NAMDRA # 75 AMO 645,NCCA 7980 |
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