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

96,825

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 of 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.

8,420

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 281 nationwide Silverado 1500HD listings starting at $3,995.

ZIP:

Search Chevrolet Silverado 1500HD Questions

Chevrolet Silverado 1500HD Experts

#1 madatmysuburban
madatmysuburban
Reputation 330
#2 charlandk
charlandk
Reputation 260
#3 Drew6350
Drew6350
Reputation 210
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,969 Great Deals out of 183,482 listings starting at $1,495
Used Chevrolet Silverado 2500HD
308 Great Deals out of 28,701 listings starting at $1,500
Used Ford F-150
2,184 Great Deals out of 194,804 listings starting at $290
Used GMC Sierra 1500
805 Great Deals out of 68,893 listings starting at $1,800
Used GMC Sierra 1500HD
5 Great Deals out of 114 listings starting at $4,995
Used Dodge Ram 1500
418 Great Deals out of 10,964 listings starting at $1,000
Used Chevrolet Silverado 2500
12 Great Deals out of 250 listings starting at $3,900
Used Toyota Tundra
464 Great Deals out of 34,863 listings starting at $2,500
Used Ford F-250 Super Duty
332 Great Deals out of 44,731 listings starting at $1,450
Used Dodge Ram 2500
131 Great Deals out of 5,095 listings starting at $2,999
Used GMC Sierra 2500HD
123 Great Deals out of 12,838 listings starting at $2,995
Used Chevrolet Tahoe
588 Great Deals out of 33,114 listings starting at $1,500
Used Toyota Tacoma
542 Great Deals out of 43,391 listings starting at $1,995

Used Cars For Sale

2006 Chevrolet Silverado 1500HD For Sale
48 listings starting at $5,450
2005 Chevrolet Silverado 1500HD For Sale
3 Great Deals out of 46 listings starting at $6,988
2003 Chevrolet Silverado 1500HD For Sale
7 Great Deals out of 111 listings starting at $5,200
2002 Chevrolet Silverado 1500HD For Sale
54 listings starting at $4,997
2001 Chevrolet Silverado 1500HD For Sale
22 listings starting at $3,995

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.