318 with big valved or 340/360 heads

I've run 2.02" intake valves on 318's before with 340/360 heads, they will run better with just the head swap alone...

However, if you just put the larger port heads on, it will lower your compression some. If you put in 10.5 compression pistons, then with the 340/360 heads, it will bring it down to a nice 9.2 compression so you can even run on cheap pump gas...

the larger port heads will increase horsepower over the stock 318 heads...