depends on what kind of power you want out of it. a 360 can produce alot of power for street use/hotrodding. if you want all out stupid go 440 torque is all there and pretty good on the pulling side. both are going to be gas guzzlers period but what you have now would be alright if youre not constantly pulling heavy loads. rebuild kits are like 500 bucks or so for a small block'
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