[Cliff R]

What type of timing set used would have NOTHING to do with engine power or how fast the car would be.

The stock type sets and used and preferred here, they are very strong parts. I actually prefer the older sets as pictured below and have a few sets in spare parts purchased off Ebay. The good sets show up on their from time to time and usually quite reasonable.

Even the very best double roller sets with the seamless chains and billet sprockets will experience chain stretch. I tried a Rollmaster set once in my first 455 and it ended up needing a chain after a few years of hard use and several thousand street miles. Up until that time I had used wide link plate sets exclusively in my own engines and went back with one in the current engine and it's fine now since 2009.

Far as nylon sets go they are excellent for full race set-ups and lots of "old timers" used them as they will provide constant tooth contact between the sprockets and absorb harmonics as well which reduces spark scatter and provides slightly smoother timing across the RPM range. I've never been comfortable enough with the plastic sets to try one for a street or street/strip car, but a good link plate set will last the life of the engine without much trouble........Cliff

Put a few pics below, notice the steel gears and heat treated on the teeth as well, these will be the best sets and an excellent choice for one of these engines. It's a little bit of a PITA to move the cam around since Mopar discontinued their 6 offset keyway set, but I stock up on those as well so good to go here for quite a while.