super cobra jet valvetrain? - 460 Ford Forum
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post #1 of 24 (permalink) Old 11-16-2013, 07:57 AM Thread Starter
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super cobra jet valvetrain?

i just bought a 11/69 SCJ 429. i popped the valve cover off to check it out, and this is what i found. does this look like all the factory parts? did the solid lifter cars use a jam nut like this? how about that bottom spring cup?
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post #2 of 24 (permalink) Old 11-16-2013, 09:32 AM
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Looks like a big block Chevrolet rocker arm to me. I could be wrong however, I was under the impression that the Ford "ball fulcrum" rocker arms were cast not stamped, (up until the "sled" type).

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post #3 of 24 (permalink) Old 11-16-2013, 09:40 AM
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Looks like all factory except for the retainers, but I don't see the D0OE stamped in the giude plate. Spring seat and the jam nuts are right for a SCJ. At least it is the same as my two SCJ's.
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post #4 of 24 (permalink) Old 11-16-2013, 09:41 AM Thread Starter
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Originally Posted by Flatrod View Post
Looks like all factory except for the retainers, but I don't see the D0OE stamped in the giude plate. Spring seat and the jam nuts are right for a SCJ. At least it is the same as my two SCJ's.
that helps, so you think the valve spring retainers are not OEM?
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post #5 of 24 (permalink) Old 11-16-2013, 12:52 PM
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Originally Posted by ramair351 View Post
that helps, so you think the valve spring retainers are not OEM?
Not those are not Oem cj retainers....

Aftermarket for sure.



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post #6 of 24 (permalink) Old 11-16-2013, 03:04 PM
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I have a set of sled type rockers just like that on a set of c9's.
7/16" stud adjustable, with do guide plates.
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post #7 of 24 (permalink) Old 11-16-2013, 03:34 PM
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That whole spring package looks like it's new aftermarket. And the rockers look like D3 sled style that have been retrofitted to 7/16 stud. I put a jam nut setup like that on a 351M, or 400 years ago to make the valvetrain adjustable. Think it might have been a kit sold by Crane or somebody.

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post #8 of 24 (permalink) Old 11-16-2013, 03:50 PM
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Quote:
Originally Posted by rmcomprandy View Post
Looks like a big block Chevrolet rocker arm to me. I could be wrong however, I was under the impression that the Ford "ball fulcrum" rocker arms were cast not stamped, (up until the "sled" type).
\

The SCJ stuff I had was stamped rocker w/sled fulcrum 7/16" hole and w/o the 'foot' that the bolt down D3 fulcrums had.

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post #9 of 24 (permalink) Old 11-16-2013, 04:08 PM
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Yeah, like he said!!
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post #10 of 24 (permalink) Old 11-16-2013, 06:12 PM
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I believe the rockers are the same as Boss 302 and Boss 351. I agree with Carl the retainer and spring package is not OEM.
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post #11 of 24 (permalink) Old 11-16-2013, 06:36 PM
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Quote:
Originally Posted by Lem Evans View Post
\

The SCJ stuff I had was stamped rocker w/sled fulcrum 7/16" hole and w/o the 'foot' that the bolt down D3 fulcrums had.
correct , rocker retainers , s/seats are the same as the Boss-351 and the Boss-302 except for the spring seat
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post #12 of 24 (permalink) Old 11-16-2013, 07:27 PM
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Retainers and possibly the spring cups aftermarket . Caant tell if the spring cups are stamped or machined. Machined would be aftermarket, stamped factory.
Thinking the jam nut had a piece it held down to deflect oil into the fulcrum.
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post #13 of 24 (permalink) Old 11-16-2013, 08:41 PM
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Quote:
Originally Posted by ramair351 View Post
i just bought a 11/69 SCJ 429. i popped the valve cover off to check it out, and this is what i found. does this look like all the factory parts? did the solid lifter cars use a jam nut like this? how about that bottom spring cup?
That is 100 percent correct,( EXECPT RETAINER'S) and has an added jam(lock) nut on top, cj and scj use same parts , as well as spring seat cups

the jam nut were sold over the counter because the locking nut( silver) would wear out

the part num not seen on guide plates on early engine is on the under side

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Last edited by BOSS 429; 11-16-2013 at 08:56 PM.
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post #14 of 24 (permalink) Old 11-16-2013, 08:43 PM
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Quote:
Originally Posted by ramair351 View Post
i just bought a 11/69 SCJ 429. i popped the valve cover off to check it out, and this is what i found. does this look like all the factory parts? did the solid lifter cars use a jam nut like this? how about that bottom spring cup?
also same as boss 302,and boss 351

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post #15 of 24 (permalink) Old 11-16-2013, 08:47 PM
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Quote:
Originally Posted by rmcomprandy View Post
Looks like a big block Chevrolet rocker arm to me. I could be wrong however, I was under the impression that the Ford "ball fulcrum" rocker arms were cast not stamped, (up until the "sled" type).
And your a BBF ford guy?

THATS NOT A BALL fulcrum rocker, those are only on n code thunderjets

cast rockers are also a diff ratio then the stamp steel

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