I only meant that if using a stock 400 crank turned down to the 350 journal. But yeah, if you're going to spent the $$$ to have that done, might as well have it internally balanced, too. Or better yet, go with the aftermarket crank like you said.
The Black Widow was a '57 Chevy, 290 Horse 283 Feullie, factory roll cage, truck brakes and rear axle. Built for 1 thing, stomping ford and Chrysler butt in Nascar. Only 6 were ever built. The Impala SS came out in '61, with a 348, the 409 came out a year later. Then there was the Z-11. 425 hp 427 cube W block, aluminum front end, HD tranny, rearend, brakes. Purpose built drag car. There was also the nascar variant, usinf the MK2 "Mystery Motor" that broke all of the speed record at Daytona in '63. A full year before the GTO came out. Even the Chevelle Super Sport came out before the GTO, available right from the start of '64, the GTO was a midyear model, and wasn't even supposed to be made because it broke the GM "no engine bigger than 327 cubes in an intermediate" rule. The reason the GTO gets the credit comes from an article in the march(?) '64 issue of Car&Driver, which was supposed to have a comparison of the Ferrari GTO and the Potiac GTO. Ferrari never showd up, and DeLorian and Wangers sent a pair of "ringer" cars to the tst session. Both had 421 engines from the big Pontiacs in them, along with non-spec trannies and rearends. One was setup for oure accelleration, very low gears (4.88) the other had a close ratio trans ad beefed up suspension for the road course testing. This gave the writers a false sence of what the cars could really do. Many buyers were disapointed when the regular producion cars didn't meet the hype. Of course, it was really meant just to get people in the showroom, maybe to by a regular Tempest,or a Catalina, not to sell GTOs.
