Guest BigDan Posted February 13, 2016 Share Posted February 13, 2016 I've noticed online that the horsepower listed for a '54 264 Buick Special is 143, but for a '55 it's 188. I thought they both had 2-bbl carburetors and single exhaust. What accounts for the difference? Thanks, Dan Link to comment Share on other sites More sharing options...
old-tank Posted February 13, 2016 Share Posted February 13, 2016 '54 is 8:1 compression ratio; '55 is 8.4:1 compression ratio... may due to be cylinder head and/or piston differences. Cams may be different too. Link to comment Share on other sites More sharing options...
Guest BigDan Posted February 13, 2016 Share Posted February 13, 2016 Thanks Tank. I thought it must be the compression ratio but I didn't think it would make that much difference. You're probably right about the pistons and cam. 143 to 188 is a huge jump in hp with no change in displacement. Link to comment Share on other sites More sharing options...
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