Originally Posted by techinspector1
With a tiny little 289, stock heads and a 3.00 gear, why on God's green earth would you bolt on a "RPM" manifold??????? It's all wrong, even if you change gears, which, by the way, should have been the first thing you did to the car. Now you want to compound your error with a cam?????? STOP!!!!!
There is nothing, absolutely nothing you can do to this motor to make the car faster until you let go of some coin and step up to good heads and headers with a free-flowing dual exhaust system.
The 3.73 gear would be an excellent addition, along with a little looser converter, something like 2,000 to 2,500 stall. That's all you should do to the car until you get some heads.
Matter of fact, now that I have thought about this for a few minutes, I would scrounge around and find a rebuildable 351W to replace the 289. With more cubic inches, a gear, a converter, good heads, headers, duals and a cam which matches the static compression ratio of the motor, you'd be headed in the right direction in my humble opinion. Keep the 600, It'll work great on the 351.