85 Cutlass Brougham said:Skip the 307. It is not worth the investment in time or money. According to one of my Oldsmobile brochures from 1985, the HO 307 powered 442 did 0-60 in 9.8 seconds. That is with all the help the 3.73 gears, a roller cam and a dual snorkel air filter could give it.
One more reason that 85 Cutlass Brougham didn't give is that 85 an up Olds motors have next to no after market support. When they went with a roller cam setup, the heads and intake changed to the point where the earlier intakes (and Edelbrock intakes) do not line up properly. More info can be found at: http://www.robertpowersmotorsports.com/G-bodyV6-V8.html