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Originally Posted by WayFast84
I have a question for yah, but I would like to talk to you privately, so either post up in here so I can PM or IM you or pm me and or im me at warningitwayfast.
thanks
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what do you want to know???? I have one in my 70 Nova and have a couple of cranks, a spare block etc......good motor that got a bad rap early on because of overheating issues...use a 5.7 or a 6.0 rod, but be sure to check rod bolt to cam clearance, go with a studded 2-bolt main block if you can find it. A 4-bolt block is good for street/strip applications as well. Look for a two freeze plug block (2-bolt) versus the three freeze plug block (4-bolt). They can't generally take more than .030 overbore without sonic checking them first. With the proper head they'll spin plenty of RPM. Cubes=Power.......The balancer and the flexplate/flyweel are specific to the 400. 4.125 bore * 3.75 stroke in stock form. All factory cranks were cast iron and have a 2.65 in main versus the 2.45 main in the rest of the original SBC family. If you are buying one used, make sure it passed a magnaflux test prior to plunking down cash.....if it was ran hot, it could have split the cylinder walls...
not to beat a dead horse but cubes=torque and torque*rpm=horsepower more cubes = more power (generally speaking....)
chris