rflow306

Went back out to PBIR last night and ran a little quicker. Played with the shift points, but it made no difference in the trap speed. DA was worse, but it's only picking up 24 mph out the back
The only good thing was the 1.31 60ft on 18" rears with MT and 19" stock size Forgelines in the front.

rflow306

Did not video the 1.31 pass but got the 1.35

Gonzo

Wow!! Congratulations!!

rattt g

thats awsome good job

C7/Z06 Man

Great 60'! is the MT tire the ET Street S/S - P345/35R18 #3483?

Also due to the taller height (if using OEM fronts 25.8") does it mess with the stock computer i.e. set codes, etc.?

Thomasmoto

Great pass!!!

rflow306

Thanks .
No codes so far, but i have the MT P325/35R18 (27X13.50R18) Et street R, which is about 27 to 27.5 inches tall.

C7/Z06 Man

Thanks, did not know MT made that size. Will have to check it out. I thought MT stopped making the ET Street R. Just went to MT site and see that the R really does not have a tread design for the wet so to speak. So they are out for me.

I believe the S/S 345 tire is listed at 27.8" tall on MT site which is 1.2" taller than the stock rear so if someone is running this size with the OEM front diameter size (25.8") and has any info please post up because I have not installed the 345's yet. Thanks

C7/Z06 Man

Have one more question on the video it sounds like you a coming out around idle or no?

rflow306

Launched around 1500 to 1600 on that pass. On the 1.31 pass, it was closer to 2000.
It felt like it could take more on the launch last night, I have the four spider set-up in the rear but since my axles are still stock I did not want to push my luck.
Now if I could only find my missing MPH, going to compare my logs tonight.

MarkRacerX

Congrats, great Hook n' Book pass !!

C7/Z06 Man

Thanks Again, Info on the four spider setup and axles to use would be great info to have. PM would do if you want.

PRE-Z06

1.31 on 18s is impressive, trade those 19s for some skinnies and you'll pick up 2mph...
https://www.corvetteforum.com/forums/c6-tech-performance/2921564-gto-drag-pack-drops-et-and-gains-mph.html

ZR1-ab

Mods?

rflow306

Mods are: E60 mix, 18% lower, fasterproms upper, faster proms expansion tank, texas speed 2" headers with x-pipe, ported blower, ported tb, halltech intake, alkycontrol dual nozzle meth kit. 18" forgeline rear wheels and Stock size forgeline 19" for the front. Car still has the stock heads and cam.

C7/Z06 Man

How much boost is it producing with the two pulleys?

tones_Z

That's awesome.
Congrats.

rflow306

Around 15 lbs of peak boost. The sweet spot for this Peewee blower is like 12 lbs of boost on a stock cam and stock head combo imo. On the flip side the upper and lower combo makes a ton of torque which i think is what is helping it go 3.99 to the 330 ft.
I have been comparing the 142 mph logs to these latest logs and i think i found the issue. Going to put it back on the dyno next week to make sure. Then back to the track.

C7/Z06 Man

Thanks for the all the info including the sweet spot for the blower. Keep us posted.

Racerdj

Excellent job!!