I recently replaced the HyperTech Stage II chip with the stock GM chip and bumped base timing a copla degrees.

Tonight at Raceway Park. in 65deg F temp with a 30.18" baro and 52% RH, she turned in a 13.10sec ET at 102.62mph, with a 1.856sec short time.

Though I'm certainly not burnin up the track it looks promising that I may get that 12sec time slip this season.

I think the more agressive base timing, possible with the stock chip, gave me a harder launch and so the better ET. Though the weather was "good" it was far from "ideal". Of course I chose a Wed. evening so the "Quick 8"s could lay down some nice rubber for my GY Eagles to grip into, and it worked (I could hammer the accelerator with no wheel spin).

 

:cheers: :cheers:

 

Did you ever 'finish' porting the intake? What I mean is did you siamese deeper than 1 inch into the lower intake? I went about three inches and i can tell that i gained upper rpm.

 

Congrats on the excellent time...................that gives all us L98 guys something to shoot for :cheers:

 

well done :cheers:

 

Jim - Thats great news. Congrats on the new best.

A good 60' time will always result in a nice ET.

Also, I always mention that the stock chip is better than the aftermarket chips for our applications. I am still running a stock 89 prom.

You WILL get that 12 second ET this year. It would be cool to capture that on video.

Vic

 

:cool: :cheers:

 

Great numbers! :cheers:
I'm hoping to finally run my Vette this Friday if the weather holds out. :blueangel:

 

:cheers:

 

How much did that time/mph improve over the Hypertech Chip?
Just curious.
John

 

Keep working at it Jim!

You're going to click that "12" sooner or later.

See you at E town. Like my motor? :) see sig pic hehe

 

Ahhh, the 13.0 barrier. Distantly related to the12.0 and 14.0 barriers. Congrats on a really quick car, dude!

 

Not burning up the track? :confused:

Hey, 13.10 is quick in my book! :cheers:

 

:cool: You guys all seem to be able to get better short times than me on street tyres :rolleyes: than i can get on D/Raidals :confused:

I need to get my converter in, but i think im going to wait a bit longer and fit some long tubes at the same time. :D

 

Nice work, Jim! Looks like she's juuuuust about there. Of course once 12.999 shows up it'll e 11.999 next year. :D

 

Guys thanks for the support; and yes it was a very good evening. Frankly I was quite surprised with the time slips as the weather was good but nothing exceptional.

With only the chip change and the slight base timing bump, trap speed was up nearly 1mph and ET was dropped more than .1sec from the prior two outings on 9/13 & 9/18. And that's corrected for weather conditions.

I haven't ported the intake base any deeper yet and am considering going in only another inch instead of two. That would make the area of the siamese opening about the same corssectional area as that of the runners.

I should mention that my best pass last night was the first pass, after the engine sat cooling for over 1 1/2hrs, and I launched at about 150deg coolant temp.

Subsequent passes were around 155-160deg; with short times of 1.901sec & 1.857sec and ETs of 13.206sec & 13.179sec, respectively.

So, I don't know about other L98s, but mine definitely loves lower coolant temps.

Yes the new TC realy made a difference in both short time and ET; but mostly after I raised my launch RPM closer to the new stall point. Though I ran on street tires, remember I said the Quick-8 cars put down some awsome rubber for me to grip into. Also, I bumped rear inflation back up to 32-33psi. For sure DRs would bring more consistency on less than ideal track conditions.

Also, I waited till my opponent staged, brought my idle up to 1,700rpm, then inched forward and just barely lit the staging light. I think any extra roll-out time is important in getting the "best" ETs, though it raises RT a little.

Indeed, drag racing, like life, seems to consist of a series of barriers to be overcome. And a great deal of the enjoyment/satisfaction comes from overcomming each.

The next "barrier" after 12.999sec will be 12.1sec; no cage in this baby.

Uh oh, JD, will you be ready for the next CCC?



[Modified by 65Z01, 3:28 AM 10/11/2002]

 

:cool: :D :cheers:

 

:cool: :cheers:

 

very very excellent times for the mods you have. :cheers:

 

Jim,

Breaking into the 12's before me is a big fat :nono:

I will advise as to when you can resume your testing/tuning/moding. Until such time, please lock up your tools until further notice. :yesnod: