factory option numbers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kcfirstbuild · 11-13-2011, 07:44 PM

does anyone know what the factory option numbers for a 307 and a sag 3 speed in 68 are ?

I know a 350 was some thing like LS9 and the Trans was M49

Longhorn Man · 11-13-2011, 08:16 PM

They weren't optional. I'm sure they had rpo codes... But they were base equipment so the codes will be a little hard to find
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kcfirstbuild · 11-13-2011, 08:56 PM

ok thanks - I'm trying to replace my factory firewall markings I have some numbers.

bruceman1968 · 11-13-2011, 10:11 PM

KC, The 307 code is L14. I'm not sure about your 3 spd. You can try here http://www.rpocodes.com/ or here http://outintheshop.com/options.html look in the m's like m15 through m19.
Sense your engine and tranny were standard they won't be on the SPID, I don't know about the firewall.
On the upper pass. side of the firewall was usually the model number, if that helps.
You did a great job on your 307 man, can't wait till you fire it up.

bruceman1968 · 11-13-2011, 11:16 PM

KC, Here's a good thread on firewall markings http://67-72chevytrucks.com/vboard/s...d.php?t=312454

SS Tim · 11-14-2011, 12:37 AM

Don't know where you would find that except in a GM parts catalog or possibly a protecto plate. Post exactly what you do have (SPID) and hopefully someone has the same truck with documentation. Even the dealer invoice won't show RPO codes for standard equipment.

kcfirstbuild · 11-14-2011, 09:48 AM

I scrubbed my factory markings off before I even knew what they were about. I can read some numbers. I had a post earlier but wanted to know if Some one could help me out again. All I have so far is the 541 AD CE10934 B In that order starting in the middle. I just have manual brakes so maybe be is all there was. I might but the motor number on just for fun

11-13-2011, 07:44 PM	#1
kcfirstbuild Registered User Join Date: Aug 2009 Location: Red Wing Mn Posts: 526	factory option numbers does anyone know what the factory option numbers for a 307 and a sag 3 speed in 68 are ? I know a 350 was some thing like LS9 and the Trans was M49

11-13-2011, 08:16 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: factory option numbers They weren't optional. I'm sure they had rpo codes... But they were base equipment so the codes will be a little hard to find Posted via Mobile Device

11-13-2011, 08:56 PM	#3
kcfirstbuild Registered User Join Date: Aug 2009 Location: Red Wing Mn Posts: 526	Re: factory option numbers ok thanks - I'm trying to replace my factory firewall markings I have some numbers.

11-13-2011, 10:11 PM	#4
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: factory option numbers KC, The 307 code is L14. I'm not sure about your 3 spd. You can try here http://www.rpocodes.com/ or here http://outintheshop.com/options.html look in the m's like m15 through m19. Sense your engine and tranny were standard they won't be on the SPID, I don't know about the firewall. On the upper pass. side of the firewall was usually the model number, if that helps. You did a great job on your 307 man, can't wait till you fire it up. __________________ CHEVY/GMC VIN DECODERS

11-13-2011, 11:16 PM	#5
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: factory option numbers KC, Here's a good thread on firewall markings http://67-72chevytrucks.com/vboard/s...d.php?t=312454 __________________ CHEVY/GMC VIN DECODERS

11-14-2011, 12:37 AM	#6
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,503	Re: factory option numbers Don't know where you would find that except in a GM parts catalog or possibly a protecto plate. Post exactly what you do have (SPID) and hopefully someone has the same truck with documentation. Even the dealer invoice won't show RPO codes for standard equipment. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

11-14-2011, 09:48 AM	#7
kcfirstbuild Registered User Join Date: Aug 2009 Location: Red Wing Mn Posts: 526	Re: factory option numbers I scrubbed my factory markings off before I even knew what they were about. I can read some numbers. I had a post earlier but wanted to know if Some one could help me out again. All I have so far is the 541 AD CE10934 B In that order starting in the middle. I just have manual brakes so maybe be is all there was. I might but the motor number on just for fun



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