Re: Low compression engines

[Tom Watters <tomwatters@xxxxxxxxxxx>]

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Neal, I am told you can reduce detonation with Aluminum heads.  You can
get up to a point higher.  Altitude also plays into this as well.  Higher
altitudes can go a bit higher on compression and not ping. One of the
guys local to here says at altitude of 5280 you can get 9.7 and not ping
on 91 octane with iron heads.  Gonna fire my 440 soon which is at 9.6:1. 
We'll see.


On Wed, 19 May 2004 15:40:12 -0700, "Robert neal zimmerman"
<northwestweirdo@xxxxxxxxxxx> said:

>   OK, this will probably open a can of worms, but here goes.
>      What is the key to making Horsepower with low compression?
>   I see over and over in magagzines something like
>      " We made 527 horsepower on pump swill and a hydraulic cam!"
>     or somesuch saying.
>    I am slowly working my way through my MP Big block engine book and
>    they caution anything over 9.0 to 1 for a dual purpose car is moving
>    towards flirting with detonation disaster. 
>    Well there! I've said it.
>     Neal Zimmerman Eugene Oregon
> 
Tom
65 Dart GT 'vert
68 Plymouth 'vert
Longmont, CO

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