Re: 400 - now heads?

[Stan Kafouse <skafouse@xxxxxxxxx>]

I assume they say use 452s because of the exhaust seat. They all, in my opinion, flow the same, espically after porting. Still an inefficient chamber and after new valves and machine work for only a few dollars more you have a new more efficient head. If you port a 906/452/902/904 etc. you'll get the most increase with some bowl work and removing the sharp edges in the chamber, back cut the intake valve 28 degrees. The most inportant part of the head is the 1/4 before and after the seat. Gasket matching and opening up the pushrod pince is a complete waste of time. Its an 80/20 deal. You can do 20% of the work and get 80% of the results. Dont try to make the air do what you think it should do, help the air do what it wants to do. This works on any head from a briggs and stratton to a max wedge.

--- On Sat, 5/14/11, Donald Gallimore <dongallimore@xxxxxxx> wrote:

> From: Donald Gallimore <dongallimore@xxxxxxx>
> Subject: Re: 400 - now heads?
> To: 1962to1965mopars@xxxxxxxxxxxxxxxx
> Date: Saturday, May 14, 2011, 2:05 AM
> True.  But the 452s are good
> heads.  Still marketable.  That was what I put on 
> my 440.  Choice was between the 906 and the 452 casting,
> Koffel's said use the 
> 452s. 
> 
>  
> Akron Don Gallimore
> 
> 
> 
> ----- Original Message ----
> > From: "62to65mopar@xxxxxxxxxxx"
> <62to65mopar@xxxxxxxxxxx>
> > To: "1962to1965mopars@xxxxxxxxxxxxxxxx"
> <1962to1965mopars@xxxxxxxxxxxxxxxx>
> > Sent: Fri, May 13, 2011 5:30:30 PM
> > Subject: 400 - now heads?
> > 
> > Hi All,
> > 
> > Thanks for the recent (on the old mail list)  input
> on what to do with a 1976 
> >400 motor. I'll save the basics of the motor for
> someone's stroker project.
> > 
> > How about the 452 heads that were on the motor? Scrap
> them? They need to be 
> >fully gone through. Isn't the trend nowadays to go to
> aftermarket aluminum 
> >heads?
> > 
> > Thanks,
> > Gary H.
> > 
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