Getting More go out of a 304

The 33" tires with 3.73 axle gears is fine for general-purpose driving with a 727 trans. My Scout II w/ 304 engine has that tire size/axle gearing, and it cruises quite well on the freeway. But I also modified the drivetrain by installing a low 1st/2nd gearset in the 727, and replaced the Dana 20 transfer case with a Dana 300 for a bit better 4l ratio.

4.09 or 4.27 axle gears would allow for better off-the-line performance, but then the engine rpm would be up there on the highway.

As others have suggested, work on the diagnostics and make sure the engine, transmission, and all the adjustments/specs of those are correct.
 
Michael has it right...peruse the ignition upgrades threads. Lots of good info/advice there. Biggest performance upgrade I did was a pertronix/jacobs combo. This was even after rebuilding the stock 345 w/better compression and an isky cam. Drove it for two months before I ditched the ghost box, and haven't looked back. Totally different truck now. Points/gold box had their moments, but now the aftermarket offers soooo many choices, its foolish to crutch the stock stuff.
 
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