Cobra Jet 428; Mean and Fast, need we say more?

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cj750
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by cj750 » 07 Dec 2011, 14:51

xr7g428 wrote:The Cobra Jet Cougar option is simple to define, since it is defined in the 5th digit of every car's VIN #. 1969 and 1970 428CJ cars were either R or Q codes.
True for '69. There were no R code Cougars in '70.
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by xr7g428 » 07 Dec 2011, 15:18

Yep! Ram air became an option instead of a different engine code. I think it had to do with emissions certification. (They only had to certify the engine one time)
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by 70b302cat » 07 Dec 2011, 16:14

xr7g428 wrote:Yep! Ram air became an option instead of a different engine code. I think it had to do with emissions certification. (They only had to certify the engine one time)
I'm going to have to disagree with you Bill, but without solid evidence as to the reason. The "R" code still did exist in 1970 for a Ford, but not a Mercury. I think it might have been a marketing thing. The same exists with the 429 in a 1970 Mercury Montego / Cyclone, they are all "C" codes, you need a Marti / invoice to determine Ram Air, but on a Torino they had the "J" code.
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by xr7g428 » 07 Dec 2011, 18:08

You may well be right. I don't know when they started having to qualify each engine for emissions. The EPA did not yet exist until 1970 so the standards were being set by a dozen different agencies.

Didn't C code and J code use different carbs?
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by 70b302cat » 07 Dec 2011, 18:16

xr7g428 wrote:You may well be right. I don't know when they started having to qualify each engine for emissions. The EPA did not yet exist until 1970 so the standards were being set by a dozen different agencies.

Didn't C code and J code use different carbs?
No, the carb difference was determined by whether a CJ or SCJ. So a C code in a 1970 Montego / Cyclone could be one of 4 combinations;

429 CJ (Rochester carb) w/o ram air (C code in a Torino)
429 SCJ (Holley carb) w/o ram air (C code in a Torino)
429 CJ (Rochester carb) with ram air (J code in a Torino)
429 SCJ (Holley carb with ram air) (J code in a Torino)

Then of course there were also the non CJ 429's, but we won't go there.
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by badcatt » 13 Nov 2017, 20:21

A thought on why Ram air Mustangs got a R code. The ram air on a Mustang was a Shaker. But to kill my own theory Shakers were available on 351 Mustangs too.
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by leonbray » 14 Nov 2017, 17:37

Maybe the Mustang was getting vinned on September 19 and someone went "aaargh"
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by 1969XR7Vert » 14 Nov 2017, 18:38

I'm thinking people need to be more careful when they say "Cobra Jet", leaving out the engine displacement, 428, 429 or even 351C. The discussion gets very murky otherwise, no?
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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by 93RGTE » 14 Nov 2017, 20:40

Here is what the Cougar Club of America says about the Cobra Jet:
Just curious why '68s are left out of the discussion.
Gary

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Re: Cobra Jet 428; Mean and Fast, need we say more?

Post by CougarCJ » 15 Nov 2017, 10:09

1969XR7Vert wrote:
14 Nov 2017, 18:38
I'm thinking people need to be more careful when they say "Cobra Jet", leaving out the engine displacement, 428, 429 or even 351C. The discussion gets very murky otherwise, no?
Engine displacement kInd of called out in the title of the thread, ............ No?
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