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- Aug 29, 2019
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- Jarvis, Ontario
My 66 Charger has the original 361 engine. It runs smoothly and has great low end torque. It has become apparent that the valve seals are probably shot. Lots of smoke on cold start up. I believe the engine has 70,000 original miles on it, and there is no evidence the heads have ever been off. I will be changing the intake this winter, and will either have to change the valve seals on the engine, or pull the heads.
Now for the question. If I have the original 516 heads rebuilt and change out the small 1.60 exhaust valves for 1.74 versions, and have a plunge cut done on the intake and exhaust, will it make any appreciable difference in performance if retaining the stock cam? What about if I add a small cam under 450 lift with low overlap? I am trying to retain the low end torque and street manners, but if I have the heads off for a valve job anyway???
Now for the question. If I have the original 516 heads rebuilt and change out the small 1.60 exhaust valves for 1.74 versions, and have a plunge cut done on the intake and exhaust, will it make any appreciable difference in performance if retaining the stock cam? What about if I add a small cam under 450 lift with low overlap? I am trying to retain the low end torque and street manners, but if I have the heads off for a valve job anyway???