Looking for opinions again. I'm trying to decide which to rebuild: a 400 sbc or 402 bbc. What are the advantages/disadvantages of each, other than the engine weight, and the fact that the 400 is externally balanced? The 400 and 402 have the same 4.125" bore, the 400 has a 3.75" stroke, while the 402 has a 3.76" stroke. The 400 has a shorter rod length of 5.565", while the 402 has a rod length of 6.135". I want this engine to power my '74 K10, 1 ton 4:10 geared axles, 36" tires and SM465/NP205 combo. Other than 9:1 compression, intake, Qjet, cam, and maybe headers, I want the engine to be pretty much stock, with good high torque figures at the bottom end. Which one would you build and why? Thanks!