GA 1970 Only Oil Fill tube K5, K10, K20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**IronCanine** · 08-25-2024, 10:54 PM

Well...always learning on this site. Got schooled the other day which means I'm back on the hunt for a hard to find. Turns out some 1970 K trucks with power brakes (and probably A/C too) had a first gen oil fill tube that was different from the 71-72 tube. It was part number 3929746. It screwed into the valve cover and had a metal four nub screw on oil fill cap. It had a separate stabilizer bracket assembly.

I am restoring a 1970 K20 with power brakes and A/C. I need the tube, cap, bracket and hardware....So I'm casting the biggest net I can. If you got one and are willing to sell, great! If you've got one on a truck...I'd even go so far as to get you a 71-72 version with hardware to replace your 1970 version (if you'd be willing to take it off). Hey...I've got some NOS spares, maybe I've got something you can use and you'd rather trade. Open to making something work.

Thanks to anyone who knows where this needle in a haystack is and can help.

Brad

**Joesjunk** · 08-26-2024, 09:45 AM

Good luck on that one Brad. I’ll be watching.

**IronCanine** · 08-26-2024, 10:42 AM

Thanks Joe...luck's what I'm gonna need on this one I think.

**72ironmike** · 08-26-2024, 04:06 PM

Quote:

Originally Posted by IronCanine

Thanks Joe...luck's what I'm gonna need on this one I think.

There goes my suggestion to contact Joe !

**1970cstblazer** · 08-26-2024, 11:07 PM

The caps for these are pretty easy to find. A few NOS caps on Ebay right now. I will put my feelers out for the rest.

**IronCanine** · 08-28-2024, 10:49 PM

I know that this has been established in another thread, but for completeness...here it is in actual parts books that I own. It is not in all of them. I did find it in my OG dealer parts booked copyright 1971. And I found it the 62-72 catalogue "copy" that I bought off eBay.

It's definitely a thing I need for my 70 K20 with power brakes.

**IronCanine** · 08-28-2024, 10:50 PM

It is not in my Aug '76 GMC only parts book for 67-72

**atog** · 08-29-2024, 06:38 AM

Brad those also came on 68-70 50-60 series with 366 and 427 motors Might have better luck finding one there

**IronCanine** · 08-29-2024, 07:43 AM

Gunner...thanks for the post. I've been combing the internet for those too. Still zilch to this point. Gotta be one of these out there somewhere.

**DaHos** · 08-29-2024, 11:30 AM

I have the tube with clamp and support rod, no intake stud or cap...

**IronCanine** · 08-29-2024, 12:56 PM

Hot damn Dave! That's awesome. I think this is maybe one of the first weird WTBs that actually hit! Let me know what I owe ya bud.

**1970cstblazer** · 08-29-2024, 03:19 PM

Awesome!

**Getter-Done** · 08-29-2024, 11:07 PM

This is another reason I love this Forum.

**IronCanine** · 08-29-2024, 11:36 PM

Quote:

Originally Posted by 1970cstblazer

Awesome!

Quote:

Originally Posted by Getter-Done

This is another reason I love this Forum.

Oh yeah!!! Me too!!!!

**cst204x4** · 09-03-2024, 07:01 PM

I guess I need one of these also for my 70

**Getter-Done** · 09-03-2024, 07:10 PM

This would be a Great part to Re- fabricate.

**IronCanine** · 09-03-2024, 09:13 PM

If you wanted to consider that route...here's a start:

https://www.ebay.com/itm/375462899286

https://www.ebay.com/itm/266469689994

Links sent to me by Mike Cofield.

**1970cstblazer** · 09-04-2024, 08:22 AM

Quote:

Originally Posted by cst204x4

I guess I need one of these also for my 70

If it has a power brake booster. Manual brake K10's did not have the tube. All K20's were power brake.

**1970cstblazer** · 09-04-2024, 08:24 AM

Quote:

Originally Posted by IronCanine

If you wanted to consider that route...here's a start:

https://www.ebay.com/itm/375462899286

https://www.ebay.com/itm/266469689994

Links sent to me by Mike Cofield.

Those medium duty truck units sure look very similar. Would be curious of the differences..

**IronCanine** · 09-04-2024, 09:14 AM

Actually you could get a 1970 K20 with manual brakes. See 1970 K20 CST w/o J70 below.

**cst204x4** · 09-04-2024, 09:19 PM

Yep mine has power brakes and a/c

**Getter-Done** · 09-04-2024, 10:14 PM

Quote:

Originally Posted by IronCanine

If you wanted to consider that route...here's a start:

https://www.ebay.com/itm/375462899286

https://www.ebay.com/itm/266469689994

Links sent to me by Mike Cofield.

Thanks for the Links.

Do you plan to attend the C10 Nationals?
Link: https://c10nationals.com/schedule-nashville/

**IronCanine** · 09-04-2024, 10:33 PM

Quote:

Originally Posted by Getter-Done

Thanks for the Links.

Do you plan to attend the C10 Nationals?
Link: https://c10nationals.com/schedule-nashville/

Our goal had been to get the truck finished in time to take it...but unfortunately it's not going to happen. We accepted defeat on that a few weeks ago. So I'll probably skip this year and figure out where we can take it next year.

**1970cstblazer** · 09-05-2024, 08:49 AM

Quote:

Originally Posted by IronCanine

Actually you could get a 1970 K20 with manual brakes. See 1970 K20 CST w/o J70 below.

Yes, was thinking of 1971-72, where power brakes was standard on all except 10 series.

**davischevy** · 09-17-2024, 09:47 PM

Since IronCanine did all the hard work I am going to post here. I would buy one of these filler tubes also if anybody has one.

08-25-2024, 10:54 PM	#1
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	1970 Only Oil Fill tube K5, K10, K20 Well...always learning on this site. Got schooled the other day which means I'm back on the hunt for a hard to find. Turns out some 1970 K trucks with power brakes (and probably A/C too) had a first gen oil fill tube that was different from the 71-72 tube. It was part number 3929746. It screwed into the valve cover and had a metal four nub screw on oil fill cap. It had a separate stabilizer bracket assembly. I am restoring a 1970 K20 with power brakes and A/C. I need the tube, cap, bracket and hardware....So I'm casting the biggest net I can. If you got one and are willing to sell, great! If you've got one on a truck...I'd even go so far as to get you a 71-72 version with hardware to replace your 1970 version (if you'd be willing to take it off). Hey...I've got some NOS spares, maybe I've got something you can use and you'd rather trade. Open to making something work. Thanks to anyone who knows where this needle in a haystack is and can help. Brad Attached Images __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-26-2024, 09:45 AM	#2
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,702	Re: 1970 Only Oil Fill tube K5, K10, K20 Good luck on that one Brad. I’ll be watching. __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

08-26-2024, 10:42 AM	#3
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 Thanks Joe...luck's what I'm gonna need on this one I think. __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-26-2024, 11:07 PM	#5
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,667	Re: 1970 Only Oil Fill tube K5, K10, K20 The caps for these are pretty easy to find. A few NOS caps on Ebay right now. I will put my feelers out for the rest. __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

08-28-2024, 10:49 PM	#6
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 I know that this has been established in another thread, but for completeness...here it is in actual parts books that I own. It is not in all of them. I did find it in my OG dealer parts booked copyright 1971. And I found it the 62-72 catalogue "copy" that I bought off eBay. It's definitely a thing I need for my 70 K20 with power brakes. Attached Images __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-28-2024, 10:50 PM	#7
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 It is not in my Aug '76 GMC only parts book for 67-72 Attached Images __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-29-2024, 06:38 AM	#8
atog Senior Member Join Date: Feb 2016 Location: burbank ohio Posts: 2,525	Re: 1970 Only Oil Fill tube K5, K10, K20 Brad those also came on 68-70 50-60 series with 366 and 427 motors Might have better luck finding one there

08-29-2024, 07:43 AM	#9
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 Gunner...thanks for the post. I've been combing the internet for those too. Still zilch to this point. Gotta be one of these out there somewhere. __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-29-2024, 11:30 AM	#10
DaHos Senior Member Join Date: Sep 2011 Location: Owosso, Michigan Posts: 2,858	Re: 1970 Only Oil Fill tube K5, K10, K20 I have the tube with clamp and support rod, no intake stud or cap... Attached Images __________________ 1967 C10 SWB Owner - Rustbelt Restorations

08-29-2024, 12:56 PM	#11
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 Hot damn Dave! That's awesome. I think this is maybe one of the first weird WTBs that actually hit! Let me know what I owe ya bud. __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

08-29-2024, 03:19 PM	#12
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,667	Re: 1970 Only Oil Fill tube K5, K10, K20 Awesome! __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

08-29-2024, 11:07 PM	#13
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 8,314	Re: 1970 Only Oil Fill tube K5, K10, K20 This is another reason I love this Forum. __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

09-03-2024, 07:01 PM	#15
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,005	Re: 1970 Only Oil Fill tube K5, K10, K20 I guess I need one of these also for my 70 __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

09-03-2024, 07:10 PM	#16
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 8,314	Re: 1970 Only Oil Fill tube K5, K10, K20 This would be a Great part to Re- fabricate. __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

09-03-2024, 09:13 PM	#17
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 If you wanted to consider that route...here's a start: https://www.ebay.com/itm/375462899286 https://www.ebay.com/itm/266469689994 Links sent to me by Mike Cofield. __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."



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09-04-2024, 09:14 AM	#20
IronCanine I'm trying.... Join Date: Oct 2013 Location: Athens, GA Posts: 2,705	Re: 1970 Only Oil Fill tube K5, K10, K20 Actually you could get a 1970 K20 with manual brakes. See 1970 K20 CST w/o J70 below. Attached Images __________________ 1970 K20 Z62 https://67-72chevytrucks.com/vboard/...56#post9334756 1970 Blazer http://67-72chevytrucks.com/vboard/s...d.php?t=645076 1969 K10 SWB CST http://67-72chevytrucks.com/vboard/s...52#post8520352 1971 K20 Z84 https://67-72chevytrucks.com/vboard/...90#post9047290 1946 B.F. Avery Model A Tractor http://67-72chevytrucks.com/vboard/s...55#post8292555 "Sometimes I wonder if zander208 was even real..."

09-04-2024, 09:19 PM	#21
cst204x4 Senior Member Join Date: Jan 2012 Location: corunna michigan Posts: 2,005	Re: 1970 Only Oil Fill tube K5, K10, K20 Yep mine has power brakes and a/c __________________ 1970 CST 4x4 collecting nos parts for this project 1972 cutlass owned since 1984 1972 cutlass conv 1970 Cutlass conv 1981 chevy shortbox 1986 grand national 2004 2500HD Crew Cab 66,000 miles

09-17-2024, 09:47 PM	#25
davischevy Senior Member Join Date: Sep 2008 Location: Harrison, Arkansas Posts: 9,834	Re: 1970 Only Oil Fill tube K5, K10, K20 Since IronCanine did all the hard work I am going to post here. I would buy one of these filler tubes also if anybody has one. __________________ other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless.

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