I'd get the 3.73's. Rain driving would honestly have no influence on my decision. The only reason I would choose 3.55's over 3.73's is if you are on the highway A LOT and that even may not be enough reason. Yes you can do burnouts much easier with 3.73's. Don't worry about driving in the...
I started putting Mobil 1 in my 95 Buick Century that my parents gave me at about 130,000 miles. It supposedly had an oil leak(not sure where from) but it was a minor leak. I see no signs of a leak. I would use mobil 5w-30 or Amsoil 5w-30.
I would say that the rods and block have about the same hp limit. About 500 hp. As far as I know, the CHP blocks are no different than the stock block from the factory. I know someone who went mid 10's on the stock block for over 2 yrs. Maybe invest in a custom chip and tuning. It may save...
After doing some reading, I think that a weak mainshaft is what causes the case to flex and eventually break. Upgrading the mainshaft should correct the problem. Am I correct?