spid tag on box engine conv vs closed positive - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**yelmer** · 07-17-2016, 08:29 PM

I was thinking the other day about the spid tag on the glove box . Maybe i am wrong when it says Engine Conversion . I think this was when a California built truck was shipped to a another state. So they would not install the Closed Positive Vent on these trucks because all California trucks would have this . Has anybody seen this on a non California built truck?

HOTFUN · 07-17-2016, 09:04 PM

I always thought that is correct on the Fremont, CA built 1966 trucks. It later was just listed as Calif Emmisions on the 67-72 up I believe. Anyway here is a new Lambrecht Chevrolet ordered and delivered to them in Nebraska from the Fremont, CA assembly plant. It does not have a closed pcv system and it states engine conversion on the base 250 6 cylinder engine. Mark

**60-66** · 07-18-2016, 08:37 AM

I looked into this awhile back as one of my 66s has it. All the ports for the smog tubes are plugged in the head with pipe plugs, 250 six cylinder. I think I had found some info in the assembly manual. So I think you are correct, that the vehicles were converted when being shipped outside California. Also , I think Clemdaddy has a 327 truck he posted about with the engine conversion listed.

jtrichard · 07-18-2016, 12:49 PM

What you are referring to is NOT the PCV system BUT the "Secondary air injection system" as explained here https://en.wikipedia.org/wiki/Secondary_air_injection

**VictoriaHardware** · 07-18-2016, 01:03 PM

See posts 11-17 to support the idea that they were converted to non-AIR engines -

http://67-72chevytrucks.com/vboard/s...d.php?t=548895

**yelmer** · 07-18-2016, 10:05 PM

i am talking about the pvc setup . my two trucks had regular exhaust no plugs or taps . would that air injection system use a air pump? I have never seen a air pump on a 66 chevy truck does anybody have one?

jtrichard · 07-19-2016, 03:07 AM

Quote:

Originally Posted by yelmer

i am talking about the pvc setup . my to trucks had regular exhaust no plugs or taps . would that air injection system use a air pump? I have never seen a air pump on a 66 chevy truck does anybody have one?

SEE posts 11 AND 12 here http://67-72chevytrucks.com/vboard/s...d.php?t=548895

cru_zn_29 · 07-19-2016, 09:03 AM

Mike i have a complete air injection system that came from my 66 1/2 ton 6 cyl three speed

**clemdaddy** · 07-19-2016, 11:27 AM

heres the paperwork I've got on mine...

**60-66** · 07-19-2016, 12:55 PM

Quote:

Originally Posted by clemdaddy

heres the paperwork I've got on mine...

Clemdaddy , Thank you for posting. Can you post pictures of your engine please ? Im curious what it looks like with air cleaner off and the bottom of the air cleaner , if theres a tube or not. Also seeing if the exhaust manifolds were plugged.

**VictoriaHardware** · 07-19-2016, 07:09 PM

Here's my '66 292/PG w/ AIR. Except for a few hose clamps it was all original and working. Was because I removed it all to make way for a power steering pump since there was no hope of finding the correct brackets for a L25/M35/K19/N40 engine. I documented it all and stored it safely. Built in Fremont, delivered to a CA Dealer.

**yelmer** · 07-19-2016, 08:29 PM

thanks for pictures lots of stuff for emissions

**yelmer** · 07-19-2016, 08:31 PM

Clemdaddy where was your truck shipped too? Thanks for the picture of the spid sheet

07-17-2016, 08:29 PM	#1
yelmer Registered User Join Date: Aug 2008 Location: greeley colorado Posts: 1,360	spid tag on box engine conv vs closed positive I was thinking the other day about the spid tag on the glove box . Maybe i am wrong when it says Engine Conversion . I think this was when a California built truck was shipped to a another state. So they would not install the Closed Positive Vent on these trucks because all California trucks would have this . Has anybody seen this on a non California built truck?

07-17-2016, 09:04 PM	#2
HOTFUN Registered User Join Date: Jan 2001 Location: Lincoln, Nebraska Posts: 2,144	Re: spid tag on box engine conv vs closed positive I always thought that is correct on the Fremont, CA built 1966 trucks. It later was just listed as Calif Emmisions on the 67-72 up I believe. Anyway here is a new Lambrecht Chevrolet ordered and delivered to them in Nebraska from the Fremont, CA assembly plant. It does not have a closed pcv system and it states engine conversion on the base 250 6 cylinder engine. Mark Attached Images __________________ '66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed"

07-18-2016, 08:37 AM	#3
60-66 Registered User Join Date: Apr 2012 Location: Wisconsin Posts: 3,325	Re: spid tag on box engine conv vs closed positive I looked into this awhile back as one of my 66s has it. All the ports for the smog tubes are plugged in the head with pipe plugs, 250 six cylinder. I think I had found some info in the assembly manual. So I think you are correct, that the vehicles were converted when being shipped outside California. Also , I think Clemdaddy has a 327 truck he posted about with the engine conversion listed. __________________ IS IT an EATON or Chevrolet rear axle https://67-72chevytrucks.com/vboard/...d.php?t=843778 The hubcap thread http://67-72chevytrucks.com/vboard/s...d.php?t=702839 WANTED : 1963-1966 6 Cylinder Fan Shroud WANTED :1964-1966 PANEL TRUCK

07-18-2016, 12:49 PM	#4
jtrichard Registered User Join Date: Jun 2013 Location: joshua tree ca. Posts: 1,484	Re: spid tag on box engine conv vs closed positive What you are referring to is NOT the PCV system BUT the "Secondary air injection system" as explained here https://en.wikipedia.org/wiki/Secondary_air_injection

07-18-2016, 01:03 PM	#5
VictoriaHardware Senior Member Join Date: Nov 2012 Location: Southeast Michigan Posts: 784	Re: spid tag on box engine conv vs closed positive See posts 11-17 to support the idea that they were converted to non-AIR engines - http://67-72chevytrucks.com/vboard/s...d.php?t=548895

07-18-2016, 10:05 PM	#6
yelmer Registered User Join Date: Aug 2008 Location: greeley colorado Posts: 1,360	Re: spid tag on box engine conv vs closed positive i am talking about the pvc setup . my two trucks had regular exhaust no plugs or taps . would that air injection system use a air pump? I have never seen a air pump on a 66 chevy truck does anybody have one? Last edited by yelmer; 07-19-2016 at 08:26 PM.

07-19-2016, 09:03 AM	#8
cru_zn_29 Registered User Join Date: Feb 2011 Location: Joshua Tree Ca. Posts: 719	Re: spid tag on box engine conv vs closed positive Mike i have a complete air injection system that came from my 66 1/2 ton 6 cyl three speed

07-19-2016, 11:27 AM	#9
clemdaddy Senior Member Join Date: Oct 2009 Location: Fayetteville, Arkansas Posts: 1,923	Re: spid tag on box engine conv vs closed positive heres the paperwork I've got on mine... Attached Images

07-19-2016, 07:09 PM	#11
VictoriaHardware Senior Member Join Date: Nov 2012 Location: Southeast Michigan Posts: 784	Re: spid tag on box engine conv vs closed positive Here's my '66 292/PG w/ AIR. Except for a few hose clamps it was all original and working. Was because I removed it all to make way for a power steering pump since there was no hope of finding the correct brackets for a L25/M35/K19/N40 engine. I documented it all and stored it safely. Built in Fremont, delivered to a CA Dealer. Attached Images

07-19-2016, 08:29 PM	#12
yelmer Registered User Join Date: Aug 2008 Location: greeley colorado Posts: 1,360	Re: spid tag on box engine conv vs closed positive thanks for pictures lots of stuff for emissions

07-19-2016, 08:31 PM	#13
yelmer Registered User Join Date: Aug 2008 Location: greeley colorado Posts: 1,360	Re: spid tag on box engine conv vs closed positive Clemdaddy where was your truck shipped too? Thanks for the picture of the spid sheet



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