I just rebuilt the motor in my truck,everything new except Cam & Cam Bearing...When U crank up it has about 30 pounds of oil pressure,then as it warms up the oil pressure drops dangerously low...

Asked by Feb 05, 2015 at 11:43 PM about the 2001 Chevrolet Silverado 1500HD

Question type: General

4 Answers

115,865

Cam bearings are the first thing that is lubed from the oil pump, I am afraid you sabotaged your overhaul by not replacing the cam and bearings, an old cam with new lifters can cause cam problems down the road as the hardening is partially gone and new lifters will wear right through it. All of the engines I have done through the years, the cam and bearings were always a given, sometimes you can save a little by having the crank turned instead of replacing it to save enough to replace the cam and bearings. HTH

1 people found this helpful.
185

Wow. Everything but that huh? Galley plugs? Lifters? Is the teardrop oil feeder from the block too shallow? I mean did you resurface the block and now the port is too shallow to get the oil thru? Did you adjust the lash in the rods? After adjusting lash, did you turn the rocker nut one half turn to set the lifters? Oil pump? Type of oil used being a rebuild? Bored out? Need more info. Trying to help because tennisshoes is right about sabotaging your rebuild. Thats like throwing a bbq and forgeting the beer. Might have screwed the pooch on that one. If you plan on removing the valve covers again, inspect the cam for severe wear inside the journals and for christ sake, redo the bearings.

185

And another thing lol. Did you advance/retard the timing of the cam? If so, how much? And is it possibly an aftermarket cam? Hell man, dump MMO and Lucas stabilizer thru it if all else fails.

9,560

Pull your oil pressure switch and check for a screen in the passage it screws into. I have recently read the threads about these v8's and saw many discussions about losing oil pressure READINGS, but engine sounds good. Have you been in this port or passage and seen this screen to be clean ? You can also call GM parts counter to see if they have an update or procedure other than pick the screen out and inspect.

Your Answer:

Silverado 1500HD

Looking for a Used Silverado 1500HD in your area?

CarGurus has 224 nationwide Silverado 1500HD listings starting at $2,950.

ZIP:

Chevrolet Silverado 1500HD Experts

  • #1
    madatmysuburban
    Reputation
    350
  • #2
    charlandk
    Reputation
    270
  • #3
    Drew6350
    Reputation
    250
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,755 Great Deals out of 153,117 listings starting at $1,000
Used Chevrolet Silverado 2500HD
378 Great Deals out of 30,126 listings starting at $2,750
Used Ford F-150
2,230 Great Deals out of 209,289 listings starting at $1,300
Used GMC Sierra 1500
698 Great Deals out of 60,847 listings starting at $1,395
Used Dodge Ram 1500
320 Great Deals out of 9,388 listings starting at $1,500
Used Chevrolet Silverado 2500
211 listings starting at $4,995
Used GMC Sierra 1500HD
102 listings starting at $4,900
Used Ford F-250 Super Duty
487 Great Deals out of 40,366 listings starting at $2,800
Used Toyota Tundra
455 Great Deals out of 39,339 listings starting at $2,700
Used Dodge Ram 2500
155 Great Deals out of 4,838 listings starting at $2,200
Used GMC Sierra 2500HD
143 Great Deals out of 17,369 listings starting at $2,999
Used Toyota Tacoma
405 Great Deals out of 47,514 listings starting at $2,994
Used Chevrolet Tahoe
525 Great Deals out of 37,767 listings starting at $1,250

Used Cars For Sale

2006 Chevrolet Silverado 1500HD For Sale
3 Great Deals out of 45 listings starting at $7,484
2005 Chevrolet Silverado 1500HD For Sale
37 listings starting at $5,500
2003 Chevrolet Silverado 1500HD For Sale
7 Great Deals out of 83 listings starting at $2,950
2002 Chevrolet Silverado 1500HD For Sale
3 Great Deals out of 46 listings starting at $3,850
2001 Chevrolet Silverado 1500HD For Sale
13 listings starting at $5,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.