glennster

iTrader: (1)

I took 1 pull today on a dynomite and made 360/360.the hp graph had a great line untill 5400 and then sharpely fell off and dipped and climbed back up at 6000 then fell again.I could feel the car fall off and not pull at this RPM and then slowly pull to 6500.Funny thing is I've never felt this on the street or track,I've ran consistant 12.2X at over 114 with the clutch slipping on each gearchange.I installed a shift light and set it to 6400 after the pull and it pulled hard and clean to each flash.I should have done a few more pulls but the operator didn't mention the graph and I didn't study it till later.He stated a predator would pick it up 20 HP.

I have a lunati B-1 221/221/560/560/114,918 springs and pushrods,LS6 intake,kooks long tubes w/ORY magnaflw catback,12 bolt w/4.10,asp pulley,ram clutch and speed maihahahahaer tune.

I know it wasn't the valve springs because they have less then 500 miles.Possible knock and timing being pulled.I have hooked up a snap-on scanner in the past and have around .900 mv and no knock all the way to redline.It's just weird this power loss hasn't happened before or since.
Any thoughts? Thanks.