low oil presure
Originally Posted by 1984camaroz28
Yes.............im runign 5w30 mobile 1
I am guessing it's the pump, I wouldn't see an LS1 that was even half *** maintained getting that tired at your mileage.
we run 5w30 in all 4 f-bodys in the family including my 408 in my camaro and there all making 40+ at a hot idel. Now i no the 98 have problems with the oil pumps. If im changeing the pump im gona thro in a mild cam.
Originally Posted by 1984camaroz28
we run 5w30 in all 4 f-bodys in the family including my 408 in my camaro and there all making 40+ at a hot idel. Now i no the 98 have problems with the oil pumps. If im changeing the pump im gona thro in a mild cam.
About the cam install, that's a GREAT excuse for a time to do it
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20 psi isn't that bad really. You only need about 10 psi per 1000 rpm to adequately lubricate the engine. Also remember that the factory gauges are close at best. If it worries you that much I'd put a mechanical gauge on it.
Well, here's my input. I just did a cam,spring, oil pump swap and have low oil press. When you fire up the motor cold, it makes 40-45 psi, then as it warms up it drops to 18-20 psi. Then at the lower oil press. the lifters start to collapse and clatter.I changed the pump back out and still the same problem. And no the o-ring is fine. The only thing I have left in mind is that a cam bearing moved and uncovered an oil gallery. Keep you updated.
Originally Posted by Billy177
before you do anything change the oil with 40wt using a decent filter.
my car runs very very strong....there aint a ls1 in my town with the same mods that can stay with it. im just gona keep driving it and start spraying it....another excuse for 1 more 408
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???? What about the 10psi per 1000 rpm benchmark.???? what have i missed in the last 40 years.... 
.............kossuth is right. 
.............kossuth is right. Last edited by NHRAMAN; Aug 20, 2006 at 08:34 PM.
Originally Posted by NHRAMAN
???? What about the 10psi per 1000 rpm benchmark.???? what have i missed in the last 40 years.... .............kossuth is right.
.............kossuth is right.
Originally Posted by Sprayed1998
what does it look like at WOT and normal driving
I have also seen were the cams have smaller basecircles and move the lifters further away from were the need to be and its an internal oil leak but thats super rare. 10 psi per 1k is all thats needed and his engine(- some NOS damage) will probably last another 75k. I run 10w40 Castrol GTX in everything Ive ever owned dino based wise and will always will. It does give some more pressure but its a "bandaid" as said earlier for something amiss in the engine. I built an engine for my self back in the 90s that had 18-20 warm idle pressure and it was one of the best running engines I ever built. It did however have 60 or so psi going down the interstate at 3500 rpms.