Does any one know for sure if all the 153 heads have the same chamber volume? Are they the same as the 6s, which ones? My head appears to have chambers slightly smaller than a 6 head that is supposed to have 74 cc chambers. Is there a ratio for reduction in chamber volume per .001" removed from the head? The 153 rods big end is for the 2.00 crank pin. The 181 uses the 2.10 crank pin. Both rods are 5.7. Are they the same forging? Can the 153 be bored to take the larger bearing? How much wider are the 4 & 6 cyl rods than the V8 rods?
"I wonder if God created man because he was disappointed in the monkey?" Mark Twain
