Heres the deal, i've been running the LCAs in the middle hole for some time, never had a traction issue at the track, even when running 22-23 psi. in the DRs, so this last friday i moved them to the lowest hole to try & get rid of any wheel hop that was in it, well it worked, the burnout was much smoother & no wheel hop, i get to the line, this time i lowered my launch rpms to 3000 instead of 4000, i leave & "no bogg", the tach is rideing around 5K & above, i though ah **** the clutch must be slipping, 2nd. gear i couldn't feel it hit on the shift (like it normally does), tach is still alittle high, so after the run, i see i went a new best 60ft. (1.97), but my mph in the 1/8 is 78, in the 1/4 its 101 (normally i'll always go 80 1/8 on a 101 1/4), i get back home & find (for the 1st. time) black powder like **** on both quarter panels (behind the rear tires), so now i'm thinking it must have been spinning, not the clutch slipping.

My Q. is, i thought lowering the LCAs would plant the tires harder, not vice/versa, looks like i'll have to start lowering the air pressure.

 

you are half right. it will plant the tires harder but will also unload quicker too.

 

Interesting!

 

sounds like clutch slipping to me and thats where you lost mph...you woulda known if the tires were spinning...

 

This makes sence. Thanks

 

Thats what i was thinking too, i just couldn't feel the tires spinning, my gut feeling after the take off was "ah ****" clutch , the car drove home fine, took it out today & it feels good (under normal/moderate driving that is).

 

Your clutch is prob shot.

As for the LCA, as the rear stresses, if looking from the side, the bottom where the LCA attaches to the rear rotates and the better angle you have the part that attaches to the body pushes up into it allowing better weight transfer. If the LCA is "flat" it makes it much harder to push against the body and actually may try to push down on the body and unload the tires