Hi, new to the forum and looking for suggestions. Hopefully I can get more responses than the last chevy forum i posted on, 1 response would be more
Below is what I asked on other board....
'99 Tahoe, 5.7L, running 285's w/3.42's, all stock except true dual tails from cats out the back.
Issue- I have a low oil pressure issue ( replaced sending unit, new oil pump, added mechanical gauge, still problem), I have bad lifter noise in winter when cold, now does it when warm outside too, and runs rough until it warms up, and finally, maybe the lifter issue, when under load, it begins to cut out, loses power, misses, and throws SES, mayne injector issue too. Last time I scanned, it was #4 cyl miss.
With the low oil pressure, I at least need to go through and replace bearings and check out what's going on along with lifter issue. Figured I would upgrade while I got it apart.
Goal- I need a good running daily driver with some low end umph for occasional trailer towing up to 4500-5K#s or so, but on pretty limited budget for rebuild. I rarely ever take this motor over 4K in rpm's, just not needed.
New bearings,- mains, rods, cam.
Inspect pistons, re-ring if not out of spec, bore and new pistons/rings if needed
Replace all gaskets
Replace spider with GM upgrade
Upgrade to slight larger cam
Maybe light port/polish of heads/intake
Aftermarket tune- maybe Black Bear or I know a local speed shop who maybe able to tune.
So, my main question is I guess, is cam recommendations. I see guys recommending Lunati, Howard, I've been a fan of Crane myself. I have no plans in future of any real mods other than maybe CIA, gears, and/or possible long tubes, but most likely nothing else. I believe a slight larger cam would help over stock, but I know it's limited without other upgrades/intake/fuel upgrade.
So, what kind of specs should I look for in a cam and maybe new springs also?
Any rebuilding ideas would be great.