For my Chevy 250; the block is at the machine shop - on Monday they are going to tell me the size pistons I need to order.

This is going into my daily driver. My biggest concern are gas mileage and reliability.

Are 307 pistons worth the extra money over the 250 pistons, in terms of the additional low end torque I might gain with the compression bump? I think I can get the 307 pistons for about $40 bucks more than the 250 pistons.

Also, what brand rings do people like? For this engine I want trouble free miles...


Dan