Thread: Recommendations bottom end

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If you are going to build a 350, it won't cost much more to build a 383, and you will notice a huge difference in torque. Yes, it is well worth the added expense. You will have to invest in a crankshaft and pistons. You can use the 5.7 350 connecting rods as long as you upgrade the rod bolts with ARP bolts. There will be additional expense with balancing the rotating assembly and machining the block. Your heads' combustion chamber size is a problem but you could easily sell them and get larger chambers so you can keep your compression level down, but you can use your intake manifold, carburetor and accessory brackets. A mildly built 383 can easily put out over 400 ft.lbs of torque, and that would give your car real kick in the pants power. My 383 runs your cam with AFR 190 heads and it makes 450 hp, and is easily street drivable.