Anyone pulley down to a 3.1 with stock longblock and if so, how long it been holding together? Thinking about pulleying down from the 3.3 i got now. Am I crazy or think it will hold for awhile?
You shouldnt need meth at those power levels. As far as i can tell so far a rod broke which is due to power not tune. I think anything over 400 is pushing it and whether you last or not seems to be hit or miss. I wouldnt up the power til you have the money to build a new block if it blows.I had the 3.1 pulley on mine for over 10k miles before my motor popped but that happend because my meth bottle went empty during a 3rd to 4th gear pull. That was my fault not the engines. As long as the tune is good, I don't see a problem if you are intercooled or meth injected (with something in the bottle).