Well I pulled my 4.3 and decided to put in a crate engine The motor listed in summit are 1996 though 98, my astro is a 1992 w code which I beleive is the L35. It is a roller lifter engine. I am figuring by the time I fix my noisy valve train and camshaft I may be better off with crate motor. Could a...

1992 astro awd ext, just flipped 100k and has valve noise under load. Not egr, not gas issue,not bad gas,not vaccum,not timing, absolutely puzzeled beginning to to think I need to remove the head. Only seems to make that valve noise under load, do not hear in park or nuetral. However after a night o...