GC99TA

iTrader: (30)

Thanks man. There was a time in my life that I would have probably done the same thing. But now I'm interested in fine tuning a set up at each power level (100, 150, 200, etc) and learning from each one so they are repeatable and dependable. The single digits will come with time, no doubt.

But on a side note.....that's gotta be a blast with the six speed!!!!

GC99TA

iTrader: (30)

Yeah I probably should have made just one more spray pass yesterday with one degree less timing but it was getting late, we were all tired from the night before () and we had a long drive home. But like I said, it doesn't seem right to be pulling 7 degrees from a NA tune for a 100-115hp hit but the mph says otherwise. So the only thing I can figure is that there is too much timing in the NA tune. Truth be told, I was lazy when it came to setting the max NA timing and I just mimiced what other similar combo's were having sucess with. But now I probably need to work backwards and do some NA tuning the next time out. A track rental would probably be my best bet with all the testing I need to get done.

I'm sure the 63 jet is gonna be a blast! I just gotta figure out what I'm gonna do to extend my MPH legs or else I'm gonna have to shut it down early and play with 1/8 mile tunes. I'm kinda considering putting a taller tire on it or even a tighter converter but either option will make it even more of a pig NA and will basically turn it into a bottle rocket. I just gotta figure out if I'm ok with that. My decision would be much easier if I could fill my own bottles......

ZONES89RS

iTrader: (25)

You actually try reading the plugs yet to see where the timing mark is on the strap? That will really help you dial in the timing on the nitrous.

speedtigger

iTrader: (16)

4.11 is a lot of gear for a fast car. Might be time to jump to 3.73s. Or is that your other car that has 4.11. At your trap RPM, do you have 4.56s?

GC99TA

iTrader: (30)

Yeah, with 29 degrees the timing mark was a little right of the middle of the strap on most holes but was close to being past the bend on #8. I read the timing mark after every pass but more to make sure it was still safe. The mph results leaves no doubt in my mind where it made the most power.

GC99TA

iTrader: (30)

Yeah, I'm afraid your right. That kinda sucks since I just put this 9 inch in the car with 4.11s. That's why I'm hoping I can maybe gear it down with taller tires until I'm ready to commit to a gear swap.

Both cars have 4.11s. The Trans Am has a Moser 12-bolt with 4.11s and the Camaro has a Strange 9 inch with 4.11s.

speedtigger

iTrader: (16)

How tall is your tire now? 28"? You could go 30". Camaros have lots of room for tire right?

GC99TA

iTrader: (30)

Currently on 28's. I think I could go to 29s without too much drama but I dont think a 30 would fit at my ride height. The insides of the wheel wells aren't very forgiving and I really don't want to mini-tub it. I need to do some more research though on nastyz28.com. Plenty of guys over there running all sorts of tire combos I could learn from.

GC99TA

iTrader: (30)

Here are a bunch more vids that Tony took from the stands and Go Pro.

jaywill

iTrader: (5)

Nice passes !

speedtigger

iTrader: (16)

So what RPM are you going through the traps?

GC99TA

iTrader: (30)

Thanks man.

GC99TA

iTrader: (30)

Between 7300 and 7400. It was really hard to watch the tach and determine where it was pointing vs. when I crossed the stripe. I'm embarrassed to aske this, but can we datalog with our MSD boxes? I really don't remember if thats an option. If so, it would at least be helpful to see my max RPM at the end of the run and I could concentrate on lifting just after the stripe.

I used my numbers in a few converter efficiency calculators and I'm seeing between 13 and 14% slip at the stripe on the spray. I need to call PTC and see what they think but I'm still considering going to a taller tire rather than messing with the converter (if that's a viable option) since rear tires will be one of the next things I need to buy anyway. I'm just not sure if taller tire would just make the converter slip harder anyway? I know it probably will on the launch but I'm not sure if the effect is the same at the top of the track. I need to ask PTC.

speedtigger

iTrader: (16)

That is a ton of slip. Mine is like 5 to 7%. I go through at 6500 with a 3.90 gear and 275s.

Data logging is not built in to our MSDs, not sure if there is some interface to make that happen without buying a whole data logging system that just takes the ignition signal.

GC99TA

iTrader: (30)

Yeah, it's waaay out of hand.

OK, that's what I thought but wanted to be sure I wasn't brain farting something. I wish I would have thought to aim Tony's Go Pro at the tach while I had it available to me. Maybe I'll have to rig up some sort of roll bar mount for my regular video camera to point it at the tach during a pass. That may be the only way I know for sure....but I'm pretty sure it's in the 7300-7400 range. I know for sure the 7K shift light is on and the 7500 rev limiter is not......LOL.