Dissapointing day at the track, wont rev above 5000
Finnally got the car to the track after I thought it was running great. First run of the day was the best with a 1.8 60' and a 12.2 at 113mph in the 1/4. The rest of the day it wont run slower ranging from 12.4-12.9s but all would result in the same 5000ish rev limit. Its like the engine wouldnt rev beyond like valve float. No popping in the exhaust and the A/F was prob alittle on the rich side. I had 15* timing intial and 35/36* total by 2800rpms. Yet every time i got to 5000 its like it wouldnt pull or increase in RPMs. By the end of the day my trans wasnt shifting when I wanted it to when i was manually shifting which threw off my times even more.
car is a 1987 firebird, with 3000 stall C6 and ford 8.8 with 3.55 gears, tires are 295/60r15 MT drag radials. Car prob weighs around 3400-3600 with me in it.
521 with 10.8:1 compression
Out of the box eddy 95cc heads, 120lb seat/320 open hyf flat tappet springs good for .700" lift and steel retainers.
edelbrock torqer II intake
lunati 241/249 .582/.6 hyd flat tappet cam, Jomar stud girdle and scorpion 1.73RR, 3/8" trickflow .080 moly pushrods
mallory 685 box, mallory promaster coil, recurved duraspark
Is it me or does this seem like valve float? What else can it be bc its killing my 1/4 trap speeds/time.