Just as a point of reference, how much hp will one of the 3 speeds in a 66 handle. Mine has a 250 6 right now and i am getting ready to drop in a 350, could I leave the 3 spd in it ? or would it not be able to handle the torque ....??

66 GMC SWB
65 Chevy LWB
65 GMC SWB

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