Quote Originally Posted by tms8582 View Post
I've never heard that a stock chain is stronger than a roller chain and have a hard time believing that 90 lb springs are harder on a timing chain than 105's but I've also never scene any actual evidence to say either way. Rollmaster claims otherwise however... Good luck with your e85 conversion
I could be mistaken, but I always read that 90's were harder on the chain/dampener than 105's due to the ramp rate.