Re: IML: 63 cylinder head removal

[tom higgins <thomash85715@xxxxxxxxx>]

Dave:  I have no intention of swapping these out; several local shops have assured me they will treat them with care and make them like new.  The reason for removal is that valves are deteriorating by the minute with the two year old fuel working its way through the system.  I found out too late what the folly of leaving it in there has been.  While heads are in machine shop, fuel tank will be taking a deep bath too!  The source of confusion for me is whether to have my new heads set up on purpose for modern unleaded fuel or make them "original" and use lead additives.  What is the collective view on that?  Thank you.  --TH 

sosmi@xxxxxxxxxxx wrote:

Tom, I might have missed the reason for head removal, but the heads on your engine ,should be retained at all reasonable cost. Late model heads are good, but there are several things that change. the 452 castings that were referenced earlier,or any head 65 up, would change several things.These would be as follows: Bolt-on rocker stands are gone,this could change pushrod lengths, the valve cover changes to 6 bolt, the combustion chamber is larger, which will reduce compression ratio,and valve size would increase, which would be a detriment to low speed torque. I would stick with what you have.Ya'll have a nice day , Dave..

 

-------------- Original message --------------
From: FltSgt@xxxxxxx

> Hola Tom
>
> Even if you did have the Auto-Pilot, it would not effect the time.
>
> It takes less time to remove the passenger's side head than the hard one to
> get at one the driver's side.
>
> With either head you need to remove the battery connection first. Then the
> intake, the effected exh manifold, the spark plug wires from the plug ends and
> lay them else where in the engine compartment, the full A/C bracket assembly
> and lay the compressor with hoses to one side, the effected valve cover and
> rocker assembly.
>
> Now you can pull out the push rods and get to the task of the head. Both
> heads have a bolt on the hidden rear side with sumthin on it. By myself and
> common Craftsman tools this is a 4 hour task. If my MoPar neighbor from across
> the street helps me, its a 5 1/2 hour task. If my brother In-Law helps me its a
> 2 1/2 task.
>
> There is temptation to ream out the valve seats and to install a set of
> valves that have a larger head diam. Do not listen to the GTX or Road Runner
> Devil, for your Imperial weighs more.
>
> If by chance you have a set of 1972 - 1978 400/440 heads with the last
> casting numbers of 452, use them.
>
> Uncle Rodger & Aunt Gabby
> Colo Spgs
>
>
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