Quote:
Originally Posted by Harry 6674
Most stocker engines built to the blueprint minimums have a much higher compression ratio then stock. The race gas helps.
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Yeah some higher compression is realized when Blueprinted.
But closer to the advertised Compression Ratio.
Deck Block to Minimum Rating, .030/.070 Overbore, .015 over Crank.
The Overbore helps unshroud the Valves and breaths little better.
But cannot see more than a 1/2 point increase in Compression.
Maybe wrong ..my 2 Cents !!
Still 93 Octane runs well in my LT1.
Which has 10.5 to 1 Compression and running 36 degrees Timing.
Figure that 100% gasoline would run a better ET than 10% Methanol Blend.
Because the Methanol reduces the BTU produced...
My 94 Caprice LT1 Wagon seems to have lost 1 mpg in cruising.
Tougher to get 24 mpg, getting more like 22 and 23 mpg fill ups.
Dan