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Old 01-27-2017, 03:51 AM   #1
Matt Man
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Looking for efe valve 81 k10

I'm looking for a efe valve for my 1981 chevy k10 that has a 350, I might have to install this back on my truck and I'm having problems finding one. Thanks.
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903



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Old 01-27-2017, 10:09 AM   #2
nonstop
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Re: Looking for efe valve 81 k10

There's a lot on eBay. Might not be specifically for your application but I would think as long as it will bolt up, it should work.
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Old 01-31-2017, 02:29 AM   #3
Matt Man
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Re: Looking for efe valve 81 k10

bump any other suggestions? Would like to find a rebuilt or NOS part.
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903



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Old 01-31-2017, 02:50 PM   #4
83GMCK2500
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Re: Looking for efe valve 81 k10

Which style did your truck have? The one with the actuator mounted at the valve or the one with the actuator raise up near the valve cover?

Low style: P/N: 5234815, searchable with results on ebay.
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1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt
1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050

My Introduction with my '83s History
New Daily, the '96
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Old 01-31-2017, 05:33 PM   #5
MikeB
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Re: Looking for efe valve 81 k10

http://www.ebay.com/itm/like/3319480...&ul_noapp=true

https://www.gmpartsgiant.com/parts/c...e~5234815.html

I wonder what it would take to adapt an early model bi-metal spring-actuated heat riser valve?
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82 C10 Custom Deluxe SWB -- original paint, 355/TH350, Vortec heads, GM RamJet 350 roller cam
69 C10 LWB -- Bought in 1989, now my son's
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Old 02-01-2017, 09:24 PM   #6
Matt Man
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Re: Looking for efe valve 81 k10

Quote:
Originally Posted by 83GMCK2500 View Post
Which style did your truck have? The one with the actuator mounted at the valve or the one with the actuator raise up near the valve cover?
Low style: P/N: 5234815, searchable with results on ebay.
I don't know which style it had hasn't had one since I have owned it. I might fail my re-test for smog so I'm trying to find one.

Quote:
Originally Posted by MikeB View Post
http://www.ebay.com/itm/like/3319480...&ul_noapp=true

https://www.gmpartsgiant.com/parts/c...e~5234815.html

I wonder what it would take to adapt an early model bi-metal spring-actuated heat riser valve?
I'm trying to find the exact original design to please the California smog lords. I am going to be re-doing the exhaust which will have the original manifolds so I want to put the efe valve back in which honestly makes a lot of sense to have anyway.
__________________
86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903



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Old 02-02-2017, 06:41 AM   #7
chengny
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Re: Looking for efe valve 81 k10

You are looking for GM part 5233150.

You can try

1-800-243-0126
Nickson Industries, Inc.
336 Woodford Ave.
Plainville, CT 06062
Tel: 860-747-1671
Fax: 860-747-1678

https://dl.dropboxusercontent.com/u/...20Catalog.html

Or:

Hamilton Manufacturing

822 Rennie Street
Hamilton, ON
(905) 545-4888

http://www.hamiltonmanufacturing.ca/hrv.htm#5233155
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Old 02-02-2017, 10:29 AM   #8
83GMCK2500
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Re: Looking for efe valve 81 k10

Quote:
Originally Posted by chengny View Post
You are looking for GM part 5233150.

You can try

1-800-243-0126
Nickson Industries, Inc.
336 Woodford Ave.
Plainville, CT 06062
Tel: 860-747-1671
Fax: 860-747-1678

https://dl.dropboxusercontent.com/u/...20Catalog.html

Or:

Hamilton Manufacturing

822 Rennie Street
Hamilton, ON
(905) 545-4888

http://www.hamiltonmanufacturing.ca/hrv.htm#5233155
Also valid & correct with GM documentation is the number I posted above, in case the original isn't available.
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1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt
1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050

My Introduction with my '83s History
New Daily, the '96
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Old 02-02-2017, 12:50 PM   #9
Matt Man
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Re: Looking for efe valve 81 k10

Thank you very much guys for the info, I will look into the parts.

Thanks again!

Got a question, I'm confused on how it will look once installed, am I going to need more parts because I think its supposed to look like this.

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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903




Last edited by Matt Man; 02-02-2017 at 01:19 PM.
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Old 02-02-2017, 02:21 PM   #10
MikeB
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Re: Looking for efe valve 81 k10

Quote:
Originally Posted by Matt Man View Post
I'm trying to find the exact original design to please the California smog lords.
How old do vehicles have to be in CA to be exempt from emission tests?

In Texas, it's 25 years and older.
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82 C10 Custom Deluxe SWB -- original paint, 355/TH350, Vortec heads, GM RamJet 350 roller cam
69 C10 LWB -- Bought in 1989, now my son's
Semi-retired, working part time at a classic car repair shop
Member since 2000. This is the very first car or truck forum I joined!
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Old 02-02-2017, 02:58 PM   #11
83GMCK2500
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Re: Looking for efe valve 81 k10

Quote:
Originally Posted by Matt Man View Post
Thank you very much guys for the info, I will look into the parts.

Thanks again!

Got a question, I'm confused on how it will look once installed, am I going to need more parts because I think its supposed to look like this.

That's what I was trying to ask you, didn't realize you had never seen the one that was correct for the truck. The one you have pictured is the one I was trying to describe, with the actuator up by the valve cover. That is typically a van application. The two part numbers you've been given are the correct ones for your truck and they will require a small steel tube and some vacuum line to complete the connection. Another thing to consider is if you still have the vacuum switch to control the efe valve. It will screw into the thermostat housing and have a pair of vacuum lines connected to it.
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1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt
1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050

My Introduction with my '83s History
New Daily, the '96
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Old 02-03-2017, 03:27 AM   #12
Matt Man
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Re: Looking for efe valve 81 k10

Quote:
Originally Posted by MikeB View Post
How old do vehicles have to be in CA to be exempt from emission tests?

In Texas, it's 25 years and older.
Mike to be exempt in California you have to own a 1975 or older vehicle. Yup my 36 year old truck still gets tested.

Quote:
Originally Posted by 83GMCK2500 View Post
That's what I was trying to ask you, didn't realize you had never seen the one that was correct for the truck. The one you have pictured is the one I was trying to describe, with the actuator up by the valve cover. That is typically a van application. The two part numbers you've been given are the correct ones for your truck and they will require a small steel tube and some vacuum line to complete the connection. Another thing to consider is if you still have the vacuum switch to control the efe valve. It will screw into the thermostat housing and have a pair of vacuum lines connected to it.
Yes I have the vacuum switch already, I know where it plugs into I just want to get a idea of how this thing is going to mount. I will know by this weekend if I have to put one on right away. I'm also going to look for one in the junkyard. Thanks for your help.
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903



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Old 05-15-2017, 01:06 AM   #13
Matt Man
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Re: Looking for efe valve 81 k10

Just a bump in this thread. I found a EFE valve today at the local pick n pull, the actuator holds vacuum just fine and the EFE valve itself is fine. It came out of a 82 c10 with the same emissions as mine. 10$ later it was mine.


Here it is painted up
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86 c30 crew cab dually 454/400 4/6 drop SOLD 1-8-11
1981 chevy K10 shorty 350/350C 12bolt, 10bolt, NP208
4" lift 33's
4.10's Detroit locker/Truetrac
Vintage Air
67 GMC Stepside Straight six/3 on the tree "The Peach"

K10 build http://67-72chevytrucks.com/vboard/s...d.php?t=671934

The Peach build http://67-72chevytrucks.com/vboard/s...d.php?t=733903



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Old 05-15-2017, 10:26 PM   #14
El Dorado Jim
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Re: Looking for efe valve 81 k10

I was going to say you might try pick n pull....cool you found what you needed...
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