19chevy85 wrote:Do I have to shave my block to or will it be fine to just shave the heads and will I need new push rods
19chevy85 wrote:. And will a 350 crank work in my 305
F-BIRD'88 wrote:College should be your priority. The price of a gallon of gas is not going to get any cheaper.
Increasing the horsepower of your 305 will not get you back and forth to school any faster or cheaper.
Creating more horsepower requires burning more fuel.
I'd keep it real simple for now. Have the L-31 (062-906 ) vortec heads shaved down aprox .040 to .050" to reduce the chamber volume. Install on the flat top piston 305, using a shim style .015" head gasket (felpro 1094)
Do not use a big cam in it.
Buy a near stock short duration cam or use the stock 305 cam again.
Find a mild cam with 195 to 204 intake duration .400 to .430" lift.
Dual plane vortec intake manifold.
Any big cam used in a 305 .(480" lift) will need a very high rear gear ratio to realize the high rpm power gain.
Unless you ware going to swap gears, do not use a big cam in your 305.
The taller the truck tires the more gear it will want, or it will be a slug.
When you graduate from college and get a paying job you can get more serious on the power.