Another Valvetrain Problem

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Nov 17, 2001 | 09:40 PM

chesid24

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Another Valvetrain Problem

This is for all you old Ford guys. BIG PROBLEM Okay here's the deal, it's a 1969 429 block. With reconditioned 1972 heads. Both non-adjustable but different styles. Original 1969 heads had positive stop studs, 1972 heads have pedastal mount rocker arms. With these heads i used the pedestal mount rocker arms and the pushrods that came with those rocker arms. Here's the problem, rocker arms are too tight and make a lot of noise, due to coil bind i believe. As near as i can tell i need shorter pushrods. Can anybody tell me if this is the problem and where i can get parts? One more item i should bring to mention, in 1972 ford raised the deck height of the block .022" to lower compression due to emissions, which is where i get the idea i need shorter push rods. Any help would be greatly appreciated. 1969 heads = C8VE-E 1972 Heads = D3VE A2A.
Thanks, Randy

1973 F100 4" Skyjacker
1969 Galaxie 500, 429 hopefully running soon

Nov 17, 2001 | 09:50 PM

bountyhunter

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Another Valvetrain Problem

HUH first of all if you raised the deck, you would move
the head away from the lifter so you would need longer
pushrods. How would you raise the deck? gaskets?? Maybe
the noise is that the pushrods are to short, can you
turn the pushrod with your fingers when everything is
tight and both valves are closed? good luck

Nov 17, 2001 | 10:04 PM

chesid24

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Another Valvetrain Problem

Ok, I didn't raise the deck height. All i'm saying is that i have a 1969 block which has a lower deck height than a 1972 block. With these heads that i'm using it would mean that the rocker arm is too close to the lifter, as far as i can tell. The rocker arm is tight, too tight, i believe the spring is binding.
Thanks Randy

Nov 18, 2001 | 12:09 AM

Mil1ion

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Another Valvetrain Problem

[updated:LAST EDITED ON 18-Nov-01 AT 01:21 AM (EST)]HTH
It's from the Speed Pro Parts catalogue.
The application shown is for 429's from 68-73
and for 460's from 68-78

Pleas Excuse my pen marks .
They are prices here in Canada

Dennis

78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles
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Nov 18, 2001 | 10:29 AM

Chuck P.

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From: SE PA

Another Valvetrain Problem

I really think you should try to get hold of a pushrod length checker, it's just like a pushrod that can be adjusted by threading in or out. This will give you exactly what length you need. Only way to adjust other than pushrod is to shim underneath the pedestal, I think crane makes these in several different thicknesses but wouldn't use these if you need a lot. But .025 or so may be enough to get you going and wouldn't be excessive. I think you may be "bottoming" the lifters and maybe even holding the valve open when it's suppose to be closed as well as binding when trying to fully lift.

Nov 20, 2001 | 11:55 PM

bonzi88

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From: MN , USA

Another Valvetrain Problem

I plan on bolting on a set of 1977 heads onto a 1970 motor.Crane cams
makes a guideplate conversion kit which u can bolt on 7/16 studs & guideplates on to a pedestall style head with out machine work.Then get a set of Polylocks or Kool nuts to make everything adjustable like a chev..
Jegs part # for 3/8's pushrods is 270-35655-16......$79.99
Crane has a kit for 5/16 pushrods too which is a little cheaper.Go to Crane cams web site & dig a little....you'll find them.

Nov 21, 2001 | 08:32 AM

bigsnag

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Joined: Apr 2000

Posts: 1,249

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From: Pryor

Another Valvetrain Problem

What cam are you running? What springs do you have? Stock? Coil bind usually comes from a cam that is too big for the springs. If you have the right springs for the right cam and are actually having coil bind, then your biggest problem is that fact that your valves are being held open.

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Nov 22, 2001 | 05:27 PM

georgedavila

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From: Nevada

Another Valvetrain Problem

Chuck P's right when he says get a pushrod length checker. You've involved a lot of factors, including lowering the seats if you did a valve job. Do it right and it'll be one less thing to worry about.

Nov 25, 2001 | 10:55 PM

#10

chesid24

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Another Valvetrain Problem

Well, i got it figured out thanks to Chuck P. Shorter pushrods and a Pedastal shim kit did the trick. Thanks for all the help. Oh, and don't buy the cheap chrome valve covers off Ebay if you're using anything bigger than a stock cam. The rocker arms don't clear.