Ever seen a Ramhorn like this? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**kwmech** · 10-20-2005, 10:20 PM

Good grief --- weatherhead part number--- 131x5--- they are about a buck a piece.

red71cheyenne · 10-20-2005, 10:34 PM

Thanks!

**kwmech** · 10-20-2005, 10:38 PM

Take the manifold with you to the parts store---if its anything like the store I go to, the people that put the parts away never get them in the right drawer. It's always messed up.

magic402 · 10-21-2005, 02:06 AM

the actual answer to your thread pitch is a hydraulic thread called an o-ring fitting. It's been a while but I think the aeroquip plug # is 2660-5 or 2662-5 , it's a #5 thread. It's close to the 5/16 flare and 3/8 npt but its not the same hence tight threads. you'll have to go to a hydraulic shop to get these.

**kwmech** · 10-21-2005, 09:47 AM

Quote:

Originally Posted by magic402

the actual answer to your thread pitch is a hydraulic thread called an o-ring fitting. It's been a while but I think the aeroquip plug # is 2660-5 or 2662-5 , it's a #5 thread. It's close to the 5/16 flare and 3/8 npt but its not the same hence tight threads. you'll have to go to a hydraulic shop to get these.

Wrong---guess again. Why would the factory use a hydraulic fitting for a smog pump tube.

Tx Firefighter · 10-21-2005, 01:29 PM

I just use brass NPT pipe plugs. I screw them in as tight as any sane person would and go on with life. Yes, the threads are slightly different, but they don't leak and it's not like I'm ever going to remove them and reinstall the smog tubes.

I don't torque anything tight enough to actually break the casting though.

10-20-2005, 10:20 PM	#26
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,552	Re: Ever seen a Ramhorn like this? Good grief --- weatherhead part number--- 131x5--- they are about a buck a piece.

10-20-2005, 10:34 PM	#27
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	Re: Ever seen a Ramhorn like this? Thanks! __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

10-20-2005, 10:38 PM	#28
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,552	Re: Ever seen a Ramhorn like this? Take the manifold with you to the parts store---if its anything like the store I go to, the people that put the parts away never get them in the right drawer. It's always messed up.

10-21-2005, 02:06 AM	#29
magic402 Registered User Join Date: Sep 2005 Location: rochester , mn Posts: 6	Re: Ever seen a Ramhorn like this? the actual answer to your thread pitch is a hydraulic thread called an o-ring fitting. It's been a while but I think the aeroquip plug # is 2660-5 or 2662-5 , it's a #5 thread. It's close to the 5/16 flare and 3/8 npt but its not the same hence tight threads. you'll have to go to a hydraulic shop to get these.

10-21-2005, 01:29 PM	#31
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Ever seen a Ramhorn like this? I just use brass NPT pipe plugs. I screw them in as tight as any sane person would and go on with life. Yes, the threads are slightly different, but they don't leak and it's not like I'm ever going to remove them and reinstall the smog tubes. I don't torque anything tight enough to actually break the casting though. __________________ I'm on the Instagram- @Gearhead_Kevin



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