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Old 04-27-2003, 05:43 PM
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Question Ford 390 Valve train ?

This is coming from a Chevy guy.....!
Its a 1967 Ford 1 Ton Stake bed, with a 390 and a four speed. Our Boy Scout truck.
The exhaust manifolds were leaking between the head and exhaust manifold, for 20 years or so.
So being the nice guy that I am , I decided to fix it.
It needed a full valve job. the exhaust ports welded up and machined back down flat. The heads were surfaced.
Anyhow....I put it all back together tonight and ...
? If the rockers dont adjust (no set screw type deal) they are on a rocker shaft that bolts to the head.
The push rods are solid, and it has hydraulic lifters.
So how do the valves adjust ?
Does the lifter make up the differance ?
Do you shim between the rocker shaft mount and the head ?
Or just crank that baby it'll be fine!!!!!
Help a brotha out ?

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Old 04-27-2003, 05:51 PM
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fire it up brotha. it'll be fine.
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Old 04-27-2003, 05:52 PM
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oh yeah, rotate the crank to make sure all the rocker shaft bolts are truly torqued good.
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Old 04-27-2003, 06:08 PM
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Like the man says torque-em down and rotate the engine to ensure they are seated properly and the shaft is sitting down.

Blown exhaust manifold gaskets is a hallmark FE engine trait, they are usually blown or "have just been fixed". Steel shim factory gaskets are usually the cause of the blow out and should be replaced with a composition type...last forever.
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Old 04-27-2003, 06:08 PM
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Actually, it may not be FINE. This is a good way to burn the valves on an FE.If it had any type of machine work the lifters should be collapsed to check free play between the valve and rocker, it varies on the different ones but for a '67 390 it should be .050-.150. As you can see that isn't a lot to play with if it happened to be on the low end to begin with, they make longer/shorter pushrods to compensate.

[ April 27, 2003: Message edited by: woodz428 ]</p>
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Old 04-28-2003, 03:34 AM
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Thanks folks,
I will roll her arond to TDC this morning to insure the shafts are torqued down good.
The heads had to come down .010 to clean up on the surface.
I can tell ya the intake alone is monster to handle.
BTW what does FE stand for ?
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Old 04-28-2003, 03:42 AM
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it stands for (ford engine), that was stated in an artical in the last few years in , Street Rodder magazine.
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Old 04-28-2003, 03:46 AM
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Yeah be careful with the intake there was a post a few months ago from a guy that had one balanced on the radiator support, it slipped off and took off the end of a toe, Owww. FE is the chemical symbol for iron, that's about all that I've ever heard it called. Although at the time they also had the MEL series (Mercury,Edsel,Lincoln) so it could be Ford,Edsel.
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Old 04-28-2003, 03:55 AM
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FE Ford engine ....DUH
I noticed in some spec sheets some are referred as FE engines and other Ford Engine were not.
Thanks again guys, I will button her up today.
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Old 04-28-2003, 08:54 AM
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Bro,
Valve stem height is very critical on FE engines, in fact it is critical on all engines that do not have adjustable valvetrain. When the valves were ground, the machine shop should have checked valve stem height, then ground the tips of the stems to correct, if necessary.
As long as valve stem height is correct and the proper thickness head gasket is used, it should be a "bolt-on and go" situation, as mentioned in other posts. I don't think the .010" off of the heads should affect the valves, as lifter travel should compensate for that. I don't envy you, having to wrestle that intake manifold!
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Old 04-28-2003, 02:52 PM
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UPDATE:
The Troop 50 Thunderbirds Boy Scout Truck is up and purrin' like a kitten.
Thanks for the help fellas. I am not a FORD guy but I kinda dig this ol' truck, we have had it since new.
The tip on rolling it over and re-torque the rockers was right on. I did and they did loosen up some . Thanks.
I rode in this truck when I was 11 years old. Now I'm closer to 40 than 30 and I enjoy helping out the Troop.
Not a single exhaust leak, good oil pressure , good manifold vacuum , NO LEAKS.
The ol' truck only has 88,000 miles but alot of years on her.
Thanks again Hot Rodders BB .
Robert Bagwell
Troop 50 BSA
And yes I was an Eagle scout, same troop, same truck, same old crusty Scout master.
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Old 04-28-2003, 03:07 PM
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Good luck Brobob and may all your scout camping trips be dry and sunny.

Now with an aluminum intake and some headers...maybe a cam...carb...that scout truck just might haul the wienies to the camp fire in record time!
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Old 10-15-2003, 10:20 PM
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Valve job adjustment

Yea, you got lucky! I have found out that the correct way to do this is to purchase new pushrods that are .30 and .60 shorter that stock. There is a special compression tool used to compress the hydraulic lifter then use a feeler gauge to measure how much rod you need to put in.

Another way is to pull the valve covers off (one at a time to reduce the horrible mess that you are about to make) then turn the truck on - and feel the pushrod side of the rocker - there should not be any "shock" (feels like an electric shock) on your finger if the rod is correct. Put the shortest rod in that you do not feel this shock and you will have the assurance that the valve is closed completely.

Of course a compression test will also show which cylinder is leaking - but not whether it is the exhaust or intake.

This whole project is so much fun - esp if your head was machined at a slight angle!!!!! Plus you have to pull the whole darn rocker assembly loose (not off as I have found) any time one needs to replace even one rod!!!!

Weeeeee!
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