TickerPyro

So suggesting options that could be causing issues, and asking what you have done is trolling? Well i know 1 person that will not be helped. I have taken these motors apart as well as many others. If you are a pro at doing everything, why tell people about a misfite on 4? Are you expecting people to sympathize or try to help. Epic waste of time trying to help people like this so this is def my last. Just an FYI TechWorks makes shimmed buckets for high lobed cams. Maybe you should look into them on your next build.

I am sorry I referred buckets as lifters, same job, different name. I was asking if they had been changed from stock and if there were any clearance and lube issues had been checked, as well as spring tensions (sometimes after a beating they get a limp spot) In the operation of settling airerated oil it does allow a certain amount of oil to build up dependant on agitation of oil. If the AOS does not work fast enough you end up with volume. Did rings get gapped properly for extra heat buildup? Does the code hit right away and is it always Misfire Cyl 4? You said that the motor has popped at least 2x. That is not a normal occurrence for any build. I am here to try and help with a question. If you do not want help it's all good by me, just trying to be a nice neighbor.

I was just thinking and what do you have in this car for lifters? Correction; the lifting device is solid. Like stated in previous post, Since #4 has always had issues (even though you have a higher pressure/volume pickup you can still be starved on all stages of 4. What do you run for oil weight. Are you dry sump? And have you ever checked levels after a hard drive (while the AOS is still working), also how much volume does the AOS hold? Do you hear any ticking when you start the car cold? This sounds like either a lifter is shot and a valve is halfassing it and throwing a code, or a valve is not seating right (possible bend) and you have a pre-det. I would get the high lobe cam out, get the stock (or something close back in) and see what it does. Just my diagnostic 2c.

Suspension/ctrl arms/sway bar+linkage and tranny bushings play a HUGE roll in putting torque to the ground. A spring with no dampener in it (unless you have super expensive adjustable 7x struts) will flex and chatter like crazy on most 500+ horse cars. I have Broken the rear OEM springs on a 650hp turbo M3. If you ever hit a track, just watch how the stockish cars "sit" during launch and the big boys do not.