[DeTomaso] Compression Ratio Question

[JDeRyke at aol.com]

As far as a street-driven engine on pump gas, IMHO you're pushing it with 
10:1 and iron heads, or 10-1/2:1 and aluminum heads unless you set ignition 
advance on the dyno and then don't screw with it. Be very sure that true TDC is 
found since most harmonic balancers have slipped their timing marks. 
I've been running 10.2:1 with SVO A-3 heads, an SVO hydraulic cam & Rhodes 
lifters, a tuner Holley 700 DP and 34 degrees total ignition advance..... since 
1992. I occasionally use 89-octane but if the car will be flogged or for going 
over mountains rapidly, I use 92 octane. This engine has never tasted race 
gas.   Good luck, Art- J DeRyke


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