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

88,895

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 out of 1 people think this is 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.

7,840

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

Add photo

Related Questions

Silverado 1500HD

Looking for a Used Silverado 1500HD in your area?

CarGurus has 275 nationwide Silverado 1500HD listings starting at $3,800.

ZIP:

Search Chevrolet Silverado 1500HD Questions

Chevrolet Silverado 1500HD Experts

#1 madatmysuburban
madatmysuburban
Reputation 320
#2 charlandk
charlandk
Reputation 230
#3 Drew6350
Drew6350
Reputation 210
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,952 Great Deals out of 159,917 listings starting at $1,995
Used Chevrolet Silverado 2500HD
328 Great Deals out of 26,382 listings starting at $2,500
Used Ford F-150
2,428 Great Deals out of 210,086 listings starting at $895
Used GMC Sierra 1500
863 Great Deals out of 64,428 listings starting at $1,500
Used Dodge Ram 1500
437 Great Deals out of 11,488 listings starting at $700
Used Chevrolet Silverado 2500
9 Great Deals out of 305 listings starting at $3,995
Used GMC Sierra 1500HD
4 Great Deals out of 99 listings starting at $2,995
Used Ford F-250 Super Duty
380 Great Deals out of 47,699 listings starting at $400
Used Toyota Tundra
513 Great Deals out of 32,145 listings starting at $2,995
Used GMC Sierra 2500HD
136 Great Deals out of 13,887 listings starting at $2,650
Used Dodge Ram 2500
141 Great Deals out of 5,279 listings starting at $2,500
Used Chevrolet Tahoe
604 Great Deals out of 27,653 listings starting at $600
Used Toyota Tacoma
520 Great Deals out of 37,563 listings starting at $2,950
Used Chevrolet Camaro
132 Great Deals out of 35,347 listings starting at $1,995

Used Cars For Sale

2006 Chevrolet Silverado 1500HD For Sale
7 Great Deals out of 37 listings starting at $8,500
2005 Chevrolet Silverado 1500HD For Sale
3 Great Deals out of 51 listings starting at $7,996
2003 Chevrolet Silverado 1500HD For Sale
7 Great Deals out of 113 listings starting at $3,800
2002 Chevrolet Silverado 1500HD For Sale
51 listings starting at $5,999
2001 Chevrolet Silverado 1500HD For Sale
4 Great Deals out of 23 listings starting at $3,950