I know a few guys who have gotten excellent results on similar engines but they used the Vortec heads instead of the old camelbacks. As for the cam, you might want to go to the Comp Cams website and download the Cam Quest software (freebie), it will suggest some cams that will work great with the TBI..or a phone call to their tech department will get excellent results, too. Sounds doable to me, other then the heads. The Vortec's will make some very nice power in a usable RPM range for your 'Burb.