Re: Early 70's 413

Don,

I learned about sonic test on wall thickness when I built my Poly stroker. A seasoned block, sonic test to .110, my engine was bored .090, from 3.91 to 4.0.

Nick Tiberio

FuryUs63

From: "Donald Gallimore" <dongallimore@xxxxxxx>
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Sent: Sunday, September 4, 2011 11:02:14 AM
Subject: Re: Early 70's 413

To make a 413 (4.1875" bore) into a 426 (4.25") you need to do just a little more than 60 thousand - 0.0625". Until now, I'd always thought a 413 was a 4.18" bore - glad the question on the overbore was asked. I do have an engine that is a 413 made into a 426.

Good thing about the 426 bore is that pistons are more readily available (barely).

A recommendation I've seen relative to the overbore is to sonic test the wall thickness first to determine if it can take that much overbore - any comments on that?

Akron Don Gallimore

From: a440plus6 <a440plus6@xxxxxxxxx>
To: 1962to1965mopars@xxxxxxxxxxxxxxxx
Sent: Sun, September 4, 2011 10:23:29 AM
Subject: Re: Early 70's 413

Can just do 60 overbore If memory serves correct and that will be stock 426 bore.....memory is fading but I think thats what it is.
When I had mine machined it cleaned up at 10 over so I just special ordered some Childs and Alberts.

On Sun, Sep 4, 2011 at 4:01 AM, MO <micher@xxxxxxxxxxxxxxx> wrote:

I agree with what the other guys have stated--one more thing, My 413
notor home engine has dished pistons to give it lower compression.
New higher compreesion piston are available from sealed power, but
the are cast pistons--expensive as having custom pistons made. The
plus side: forged steel crank and stronger block with outside the
block strengthening ribs........................MO

On Sep 3, 8:33 pm, Richard Kinsley <leroar.kinsley...@xxxxxxxxx>
wrote:
> My reply is NO! I'm involved with a guy who has a '66 Satellite that was a
> 383. They scrapped the 383 'cause the intake was missing and bought a 413
> motorhome engine. There are myriads of issues. He abandoned that engine
> swap.
>
> He then bought a 318LA and trans and it's a mess too. Dodger and I are going
> to try to get it running on Mon and Tues.. I don't hold much hope for it
> personally. It must be a truck engine as the oil pan is wrong so they
> dropped the tie-rod to make room. I guess it's a freewheeling type steering
> or should I say non-steering. It matches the 1 disc and 1 drum front brakes
> though. An incredible mismatch of parts.
>
> Don't be afraid of the poly as it will be the easiest way out for you and
> more economical in the long run. Poly's are not cheap but compared to all
> the problems you will encounter they really aren't that expensive either. So
> my very heart felt response is don't mess with a motorhome engine!!!
>
> Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies
> =====================================================================================================================================
>
>
>
>
>
> On Sat, Sep 3, 2011 at 1:28 PM, Ray Henry <62d...@xxxxxxxxxxxx> wrote:
> > Just been given a possible lead on an early 70's 413. It's in a motorhome
> > that's being scrapped, supposed to be low miles, and in good shape. Should I
> > be considering this, or just sticking with my plans to do another 318 poly?
> > ****
>
> > ** **
>
> > - Ray****
>
> > ** **
>
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> Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies- Hide quoted text -
>
> - Show quoted text -

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