Thinking about sliding this one into the 289, will I run into any issues with the stock valvetrain? I hear I might have to change the springs, but I decided to throw this one up on a few different forums to get everyones opinion.
Oh yeah, I would be getting it with the lifters, and a new timing chain, but is it REALLY necessary to change the springs? The heads have recently been rebuilt
No you dont have to but you my not get the proformance that they say you will get.
you might get more you might get less cheak the specs on the springs when you got them change they might match up.
If it was me i would do it.
I was just worried they might fail or something. If its a matter of getting the best performance, I was going to wait on the springs and install them maybe a month or so later.