push rods

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Apr 17, 2008 | 08:39 PM

reifwj

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From: Idaho

push rods

Ok, i have been having valve noise on all my valves. I'm going to step up the size of the rods to try and stop the issue. my question is this, would the 360 and 390 have the same push rod length. In my mind, they would not be the same length because the stroke is different. I've been wrong a lot on this truck, but I'm having a good time doing it. The ones in the truck are brand new, but if all my valves are clicking, I'm thinking maybe it has the wrong length rods. the ones I pulled out of the 390 are the same length as the ones in the 360. Is that correct?

Apr 17, 2008 | 09:06 PM

jwtimme

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From: tulsa

360 390 push rods are the same lenth, the lenth of the stroke has nothing to do with the lenth of a push rod. I would buy adjustable rocker arms espesally if you have changed the cam to a bigger one.

Apr 18, 2008 | 12:54 AM

Ford_Six

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From: The Big, Oregon

They are nominally the same length, but the valve adjustment is through the pushrods, by using slightly different lengths. If you can find a set of adjustable rockers that don't cost a fortune, grab them and use those instead.

Apr 18, 2008 | 05:57 AM

jwtimme

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From: tulsa

jegs has them for 280 bucks a set. but if you decide to use the pushrods I would buy an adjustable push rod too check the lenth befor you buy that way you only order new push rods once.

Apr 18, 2008 | 06:32 AM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

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From: Simi Valley, CA

Quote:

Originally Posted by jwtimme

360 390 push rods are the same length.

The 360/390 pushrods are not all the same length.

C4TZ-6565-B .. Pushrod ~ 9.62"

Fits F100/350: 1965/67 352 / 1968 360/390

Fits passenger cars: 1958/67 352 / 1961/68 390 / 1968 428

All before change # L2.
----------------------------------------------------------
C8AZ-6565-A .. Pushrod ~ 9.59"

Fits F100/350: 1968/76 360/390

Fits passenger cars: 1968/71 390 / 1968/70 428

All change # L8.
---------------------------------------------------------------------------------------------
There was also .030" U/S .060" U/S / .030" O/S .060" O/S pushrods available.

C8AZ-6565-A is .030" U/S and was used 1958/68 (when required) before that running change took place.

C4TZ-6565-B is .030" O/S and was used 1968/76 (when required).
-------------------------------------------------------------------
NOTE: C8AZ-6565-A is a 1968 part number, it replaced: C0AZ-6565-J.

Apr 18, 2008 | 08:47 PM

jwtimme

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From: tulsa

I stand corrected I reread some info, I was going off the deck height of the FE block which are the same at 10.17 but the diffrence came in the raio of the rocker arm. Some had 1.73 and other 1.76 accounting for the 3 hundreth diffrence.

But still I would buy the adjustable rocker arms, I just don't like the idea of not being able to adjust if I need too.

Apr 24, 2008 | 06:47 PM

baitmaster

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From: nevada

Some yrs back, I had a few worn pushrods (ball had a flat spot.). Kept track of which ones came out of what hole, and bought the next longer rod for the culprits. Parts store had several dif lengths.I just checked each one with a feeler gauge. After that, everthing was quiet, and drove it for another 60,000m before I decided to pull that motor and rebuild another 390 for it.