I've got a Q-jet from a '77 Caddy with a 425 in it that I am putting on my '71 Chevelle's 350. Any clue what size jets are in it, and more importantly what jets should be in there? I'm guessing they're probably a bit different since the caddy engine has quite a few more cubic inches than my engine. Thanks.

try looking up the carb id numbers on www.carbs.net (http://www.carbs.net) or www.thecarburetorshop.com (http://www.thecarburetorshop.com)

It will probably run just fine with the stock Caddy jets. I had really good luck running 400 Pontiac and 455 Oldsmobile Qj's on my 327. Try it stock first.