My last effort

[Mitsumark]

Guys--Is there any other place oil could enter the combustion chamber other than rings,valve seals/stems,PCV system?The car is once again burning oil at an alarming rate to the point where it smokes out the tailpipes at idle pretty good now..It's to the point where it's embarrassing to drive the car..Compression checked out good,PCV system is operating effectively as Plenty of suction is present at the valves, and on both Plenum PCV pipes..Removing the oil cap when running there is no blowby coming out..The car still pulls hard without hesitation..Pulling the plugs with only 300 miles on them show oil on 2 of the passenger side plugs..I've read stories about the header bolt on the passenger side,and also the filters under the cam covers.Are either of these a possibility?My gut is telling me it needs valve seals..If thats the case I will be selling the car for sure..Haibeck wants 9K to rebuild the motor to it's current 368 specs..I know valve seals dont mean a total rebuild but if the motor has to come out then why stop there?I can't justify putting that much coin into it considering it is not a prestine car..Me fixing it myself is out of the question as I don't have the time as of now due to work..Your advice is my last attempt at getting some more suggestions before the car is EBay bound..I love the car but Ive had enough..

[scottfab]

Have you tried going to 10w40 or even 15w50?
This ONLY to measure the impact on consumption.

[Schrade]

Originally Posted by scottfab

Have you tried going to 10w40 or even 15w50?
This ONLY to measure the impact on consumption.

My first thought... What weight oil ARE you using there Mark?

Heavier-weight is less prone to vaporization - that is, IF it's pulling through the CC vent plumbing.

[LGAFF]

Did we check and make sure the IHs are proper for this car?

[PhillipsLT5]

Are the A Mold wheels still available?

[LGAFF]

Is it possible when the car was modified they swapped the wrong IHs and the ones on the car do not have the oil vapor plugs in the IH or the heads are different?

https://jerrysgaskets.com/store2/roo...20Housings.pdf

[Mitsumark]

Lee-I doubt that's the case as the car ran with no noticeable oil consumption or smoke the first few months of me owning it..As far as oil,I'm running Mobil 1 10W40..It's been 10-20* here in NJ for the last 2 months so I didn't want to step up to a 15/50 or 20/50...Again,if I was an expert I wouldn't be here asking for help..But at the rate it's burning with constant visible smoke there is no way I can be convinced that going from a 10 wt to a 15w is going to solve this..There is oil finding its way into the combustion chambers and plugs are chalky Black(rich) with traces of oil on a few of them just after a few hundred miles..The car doesn't misfire or hesitate..It also has plenty of power until plugs foul out a few hundred miles later..This leads me to believe the problem is in the heads,,not the block..I'm sick as I just put $3K in wheels and tires on this thing..Phillip--If the car goes bye bye,I will decide if they will go with the car,or be sold separate..You have my word they are yours if they are sold to anyone..If I can't get to the bottom of this within the next few days I'm gonna clean the car up,type up a brief description,take some pics and it will be for sale..I bought the car to enjoy it and have spent more time monkeying with it..I'm mentally exhausted as of now and I'm really leaning toward getting rid of it..If that's what I decide I will offer it up here first..If there is no interest then it will be Fleabay..

[USAFPILOT]

so how much for the car with the failing LT5?

[Kevin]

knew I heard something. Hope you figure out what to do. really annoying to have something wrong with your car and not be able to fix it

[Kevin]

another question, who did the 368 conversion?