[Silversixspeed]

Just got back from the track, and wanted to see if these times are up to par with the equipment I've got. Here's the quick basics about the car:
90 Notch somewhat gutted, no A/C, rear seats, etc
Stock longblock 302, possibly has a cam, non roller
Holley 4barrel carb
edelbrock 289 intake
shorty BBK headers
W/C T5 with King Cobra clutch
3.55's in an 8.8
Boxed LCA's
BFGoodrich T/A Drag radials @25psi
MSD distributor (14* initial for N/A, 10* initial for 100 shot)
NX wet kit

It was in the 80's for temperature tonight, so it clearly wasn't the best air, but I still managed to get my best times in. After I hit the new N/A best, I backed off the timing, and went for a run with the spray. This is the 8th or so run completely with the car, and the spray run is the first ever spraying through all the gears.


Best N/A Run

60' 2.013
330' 5.887
1/8 9.099
MPH 76.91
1000' 11.874
1/4 14.217
MPH 96.35


100 shot (only run)

60' 1.931
330' 5.354
1/8 8.154
MPH 86.65
1000 10.767
1/4 12.913
MPH 105.74

I'm wondering, with the DR's, and since I'm not really having any issues with spinning, why are my 60's so high? I tried holding it around 4-5k and slipping the clutch, and it sure feels good, but doesn't show on the slip it seems. Maybe I need to slip it faster?

[RLG34750]

based on the equipment the times are about right......

but it does seem like you are either having a traction problem or something with your launch technique......

your N/A 60' is not bad but on spray is a different story....

tends to make me believe the clutch is slipping in addition to the way you say you launch the car....

the king cobra IMO is nothing more than a glorified stock clutch.....(every car i have driven with a KC hasn't been able to handle launches on n2o)

My advice would be upgrade the clutch to a spec stage 1 or 2 and you will see lower et's

[samotrx7]

Have you tried to dumping it outright? I found that my car responded much better when i dumped it and controlled the spin with my right foot. Also how's your burnout?

[Silversixspeed]

Originally Posted by RLG34750

based on the equipment the times are about right......

but it does seem like you are either having a traction problem or something with your launch technique......

your N/A 60' is not bad but on spray is a different story....

tends to make me believe the clutch is slipping in addition to the way you say you launch the car....

the king cobra IMO is nothing more than a glorified stock clutch.....(every car i have driven with a KC hasn't been able to handle launches on n2o)

My advice would be upgrade the clutch to a spec stage 1 or 2 and you will see lower et's

The KC clutch has actually held up better than I expected, but I don't think its slipping. I could be wrong, but if anything, I think the wheels are spinning on the N20 run.

The reason I'm worried about the 60', is because I had a 3.8V6 Camaro with street tires, a stall, and 100 shot pull a 1.9. With a significantly lighter car, taller gears, and drag radials, I'm just expecting this thing to do much better. I think I just need to work on the launch technique, and it'll progress eventually.
Also, on the N20 run, I didn't actually hit the spray until halfway, if not later, through 1st.

Originally Posted by samotrx7

Have you tried to dumping it outright? I found that my car responded much better when i dumped it and controlled the spin with my right foot. Also how's your burnout?

I tried dumping it from about 4500 once, on an N/A run, and it spun for a little bit. I'll play around with the pressures and stuff more next time.
My burnouts are rather short, maybe 3-4 seconds, because every single time I do a brake stand, the rear starts sliding to the left. Any ideas on how to control that, or why it'd be doing that?

[samotrx7]

Make sure your completely out of the water when you try it, maybe some water might be getting under one tire and not the other. Another thing I noticed with my car is that it does the same when I start the burnout too low in the rev range. A worthwhile addition would probably be a line lock and trying a burnout in 2nd gear.

[RLG34750]

Originally Posted by Silversixspeed

The KC clutch has actually held up better than I expected, but I don't think its slipping. I could be wrong, but if anything, I think the wheels are spinning on the N20 run.

The reason I'm worried about the 60', is because I had a 3.8V6 Camaro with street tires, a stall, and 100 shot pull a 1.9. With a significantly lighter car, taller gears, and drag radials, I'm just expecting this thing to do much better. I think I just need to work on the launch technique, and it'll progress eventually.
Also, on the N20 run, I didn't actually hit the spray until halfway, if not later, through 1st.


I tried dumping it from about 4500 once, on an N/A run, and it spun for a little bit. I'll play around with the pressures and stuff more next time.
My burnouts are rather short, maybe 3-4 seconds, because every single time I do a brake stand, the rear starts sliding to the left. Any ideas on how to control that, or why it'd be doing that?

the KC will slip and you will not know.....

then again you could be blowing the tires when you spray it

with regard to the burnout there is no need to do a john force impression.....

if you are on street tire all you need is spin them enough to clean them

or with a DR just spin to you see white smoke

the car sliding to left is just the engine torquing the car over

perfectly normal.......

based on your mods I'd try launching at 3500-3700 rpm's

don't recommend dumping the clutch just drive as if you are leaving a traffic and a tractor-trailer ran the red light....

just remember seat time will be your best friend.....