340 No low end power

340's like 2.02 heads with a cam, headers, and big exhaust.... im not saying its killing it, but i wouldnt run 1.88's when im building a mild 340....... they came with 2.02 heads stock!

in 72 they went to 1.88 valves. 2.02s will breath better on the top end, they will not add low end torque.