can anybody identify my problem haha cant get car to hook
http://PhotosbyJim.smugmug.com/gallery/19586001_RQ3J2Q#1534716256_BBhXBQ7-A-LB

lauch #2
http://PhotosbyJim.smugmug.com/gallery/19586001_RQ3J2Q#1534461039_G9zBtnQ-A-LB

cold damp track? tire pressure? try this saturday

track was good tire pressure was 7.5 3 runs 3 spins

Have you tried raising your wheelie bars some so it
will transfer more
EDIT
I assume this is a 4 link... whats the length and height

whats rpm are you trying to leave at?

we have tried anywhere between 6000 to 7300 does the same thing

we have gone through the chassis from bumper to bumper twice. what is strange is that when it is 70 degrees or more this car has consistant 1.12 /1.13 60 ft times and the car will hook on ice. under 65 degrees this is what the car does no matter what i try

Raising wheelie bar won't help, its not even trying to transfer, let alone hitting the bar.

Have you checked your tire gauge against another. Slicks look like radials to me…

Did you try loosening front shock extension?

shocks are as loose as they can go 2 different sets rears also new never compared guages

Maybe try softening rear compression also. What # spring on the rear? Where is the IC of the four link?

Have you changed anything in the suspension since it was last out? If not, here is my .02

I had the same PS Hemi in the car I just sold, and I know how finnicky they can be. I would start by taking timing out of it, at the hit, so that you can get the car to leave (although it may be a pooch to start off), and than start ramping the timing back in, as you get the chassis figured out. I would share my old launch RPM settings, etc., but, with your big tire, I am sure that your settings are far more agressive.

Do you have a Racepak? If so, what has the driveshaft rpm been in the past, at the 1 second mark? I would back it down with timing, than sneak back up to where the graph is showing it's happiest point.

I didnt see a vid the first time I looks... but looking
now and seeing it, it looks like the springs are real
stiff and it looks like the tire pressure is high...
do you know what the IC is... whats the weight
(front and rear)

If I had a car that was leaving with some 1.teens,,and then started acting like that,,,I'm not sure what I would do..!! You are spinning the tires on the line easier than I can in the water box..!! Hard to tell from videos, but appears the tires might have WAY to much air for some reason, if that is possible...I suppose the tires are still 'decent' for this time of the season..? That is surely amazing that this would happen over 5* temperature. I can't give you any info on 4 link suspension,,I can't even get my ladder bar sled to work like I want it to.. But, that is one of the most frustrating launches I have ever seen.

we thought we had tire issues so we just bought new ones beginning of year these only have bout 15 runs like i said its amazing when its hot the car 60fts awesome but get colder the car is a different animal

Could it have been the track prep at LVD? I know Shakedown was off the hook, I've only been to LVD a few times and the prep was never stellar. I agree with the rest, something in the back seems way too stiff, could the shocks be frozen up?

M/T 34.5 17 16 m5 compound

Jim brand new shocks,springs front and rear chasis gone over front to back twice this year car works excellent when hot does not work in cold weather .track prep wasnt the best but i had same issues at shakedown