Originally Posted by hunnerdean
I am almost done tearing down my 351W. All I have left is to take the crank, rods, pistons, and main bearings out so I'm starting to do some heavy research of ways to increase horsepower and stay within a budget at the same time. After getting down to the block, I can see that the motor is not in bad shape at all. Therefore, I want to keep the block stock and just build up the top end. Other than having a machinist port the stock heads, what else can I have done to increase horsepower? Possibly the intake ported?
A change of cam to a little bigger one is usually the esiest way to up the HP, or an increase in C/R along with a bit bigger cam. An aftermarket timing set dialed in slightly advanced, vs OEM slighly retarded, helps. Porting might or might not help depending on knowledge & expierience of the porter. Sometimes hogging out can cause loss of port velocity if done excessively & be counterproductive. If heads are ported the intake will need to be port matched to them. A new intake can help, but probably not a huge amount on a stock engine. Something like an Edelbrock Performer RPM or Air-Gap, but don't get one that is for high RPM use, they don't do as well on the street