ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1971 - 1973 => Topic started by: c9zx on July 22, 2012, 09:06:46 PM

Title: 351-4V vs. 351-CJ air cleaner lid decal
Post by: c9zx on July 22, 2012, 09:06:46 PM
This is related to an old post I started. The question has been which decal is correct for 72 Q code 351C. The CJ decal fits the lid properly the 351-4V does not. It would seem the CJ is correct as all information I have indicates the air cleaner assembly is correct. The 351-4V decal seems to be for a smaller diameter lid or at least the inner flat ring. I suppose it could be an error by the manufacturer but it seems unlikely. Anyone with additional information please share it with me. Chuck
Title: Re: 351-4V vs. 351-CJ air cleaner lid decal
Post by: J_Speegle on July 24, 2012, 01:29:22 AM
A few examples of the 4V decal (originals) that fit

  I know that one of the shop had a question about the 4V decals since they had two reproduction both with different print details and each had a different circumference. Believe the issue may be a poor reproduction - would not be the first one :(


2F02Q173564
(http://i44.photobucket.com/albums/f49/firetrainer/72-3%20Mustang/2F02Q173564engdecals.jpg)


2FO2Q1766617
(http://i44.photobucket.com/albums/f49/firetrainer/72-3%20Mustang/2FO2Q17666170Keng.jpg)


2F03Q215563
(http://i44.photobucket.com/albums/f49/firetrainer/72-3%20Mustang/2F03Q215563engdecals.jpg)
Title: Re: 351-4V vs. 351-CJ air cleaner lid decal
Post by: krelboyne on July 24, 2012, 10:52:05 AM
If all 1972 351-4V engines were Q codes, aren't they all 351CJ's?
Why would some of them be stickered differently?
Title: Re: 351-4V vs. 351-CJ air cleaner lid decal
Post by: c9zx on July 24, 2012, 11:29:21 AM
Yes they are all "CJs". The reasons why Ford used different decals is open to speculation. If there is a definitive reason I'm unaware of it. Insurance costs, gas crunch at the time, a movement away from "high performance", early case of political correctness for California cars????? Chuck
Title: Re: 351-4V vs. 351-CJ air cleaner lid decal
Post by: J_Speegle on July 24, 2012, 11:16:05 PM
Quote from: krelboyne on July 24, 2012, 10:52:05 AM
If all 1972 351-4V engines were Q codes, aren't they all 351CJ's?
Why would some of them be stickered differently?

The whole CJ non CJ 351 one thing as just been a confusing issue through the years as mentioned. Some Ford documents list it one way while another the other. Added allot to muddy the waters and discussions over the years. :(
Title: Re: 351-4V vs. 351-CJ air cleaner lid decal
Post by: Danoh1 on February 06, 2019, 01:21:21 AM
Old post. I know.

I bought a 72 Q code Mach One in 1979 from the original owner. He stated the only thing not original was the clutch.  It failed two weeks after he brought it home.

I distinctly recall opening the hood and seeing a chrome lid with 351CJ on the decal.  I had never heard of the 351 CJ, but I figured Cobra Jet was good.

Just brought home a Q code barn find to restore. I’m digging through all these old posts. Thought this might be valuable