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main jet size for 250I6 3 speed 1967
i have 3 carbs
all off 250s I6
one has main jet marked 57 one has 58 and one has59
can anyone tell me which one i need
my milage is about 10mpg so i switched to the 57
to try to better my mpg's
its for my 67 lwb 250 3 on tree
thanks
it was running way to rich with the 59 in it before
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67 CHEVY LONGBED----- BEST 51 DOLLARS EVER SPENT ON EBAY!
4.3 LITER INJECTED MOTOR WITH 5 SPEED GOING IN SOON
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