Thread: piston and rod questions
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10-18-2006 06:01 PM #1
piston and rod questions
I got a screamin good deal on a set of venolia forged pistons for my Buick 455, they are designed to be used with a BBC 6.800 inch rod. i was doing some figuring trying to determine how far the new pistons and rods will be in the hole compared to the stock setup..something aint adding up or i dont know what the hell i'm doing. here is what i have
stock pistons have a 1.955 compression height (pin height)
stock rod is 6.600 long, this should give me a total length from rod journal centerline to piston top of 8.555 correct?
new pistons have a 1.620 compression height (pin height)
new rods are 6.800 long, crank will be offset ground for an additional .050 stroke to take advantage of the .050 smaller rod journal on the bbc rod so this means i would add .025 to my measurement correct? that gives me a total from rod journal centerline to piston top of 8.455 correct? this means that my piston will sit down .100 farther in the bore than a stock piston if i am correct?Bob Gibbs
65 Buick special post project
you can attract more flies with honey than vinegar.....but you can can attract the most with a dead possum
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How did you get hooked on cars?