Quote: If you can swing an intake change, can you swing a little more for a cam change? The summit k6901 cam/lifter kit is only 110 bucks and I'm sure someone on here can suggest a set of valve springs. Add in a set of aftermarket headsers and you'll really wake that 318 up a lot more than just doing the intake.
I have run this cam on two different 318's with stock springs with no problems up to 5500 rpm. My 76 Feather Duster with this cam, a 72 340 TQ and duel exhaust was a screamer! The 4-speed and 3.55 gears helped too!
