Thread: I need to know

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Originally posted by robot
Another thought.... if it is a GM part number, the 39xxxxx numbers are usually 1969 and later.....327 stuff should start with a 37..... you can measure the pin to piston topand tell if it is a 327 or 350 IF you knew the dimension......let's see

9.050 deck height (is this right?) less 5.7 rod equals 3.35

Then 3.35 is the sum of half the stroke plus the pin to piston top.

For a 350, the stroke is 3.48 so the pin to top is about 1.61 (center of pin to top of piston)

For a 327, the stroke is 3.25 so the pin to top is about 1.72

your numbers will vary, not valid in the southern hemisphere, void where prohibited, no cash value.

mike in tucson

is that to the top of the pin?
i dont have the pistons, ill have to call him. if its wrong i wont charge you for the troubles ive had. thanks