318 upgrades

Check it out when you re-gasket it, maybe a valve job if needed. Add a nice 4 bbl on a small port intake, good dual exhaust with headers if you want and upgrade the cam and valve springs. You can get to around 300 HP with the small port heads with streetable bolt on parts and still have a 20 mpg car on the highway. When I rebuilt my 318 I added cam, intake, 4bbl carb, and good dual exhaust. Probably close to a 50% power increase and actually improved fuel millage. The little rear end will live for a while if you are lucky but I would be working on the rearend upgrade.