Bah humhad bug on all those new Springs your wasting your money. I've never broken Mopar spring in a small block putting a bigger cam in. My current cam is at least a 450 lift according to my cheap Harbor Freight Micrometer? With some old Springs I found somewhere I threw in there. I was bouncing that thing off the rev limiter all day last Sunday at the Mopar Nationals LOL give me a break with the new Springs. We're not talking some high-dollar machine precision blueprinted and balanced motor here?To me the op is just trying to get some horsepower for funsies it looks like.
In the meantime, look for a $150 - 440 on Craigslist and put it on a motor stand and stare at it for a while and you'll get some ideas :thumbsup:
If I had a mopar truck I'd be thinking big block.
