That's about right
Estimated E.T.?
Thread Starter
Drifting
Joined: Feb 2006
Posts: 1,600
Likes: 2
From: Outer banks North Carolina
Estimated E.T.?
I'm a little bored with the performance of my stock "99" auto coupe.
It has 3.15 gears and an auto, 54000 miles etc...I'm thinking either 3.42s or 3.73s and a yank 3200 converter, a cold air intake and a dyno tune. What is your best estimate of E.T. for this setup? I put the 3.42s in a "97" stock and on my g-tech it said 12.94 e.t. I hope to do beter than that! Mike Mercury, If you are reading this your opinion is highly regarded as you seem to be a knowlegable fellow
Any one with this setup please reply.
Old streetrodder Dave
It has 3.15 gears and an auto, 54000 miles etc...I'm thinking either 3.42s or 3.73s and a yank 3200 converter, a cold air intake and a dyno tune. What is your best estimate of E.T. for this setup? I put the 3.42s in a "97" stock and on my g-tech it said 12.94 e.t. I hope to do beter than that! Mike Mercury, If you are reading this your opinion is highly regarded as you seem to be a knowlegable fellow
Any one with this setup please reply.Old streetrodder Dave
Administrator
Joined: Mar 2001
Posts: 368,414
Likes: 24,799
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Get a good launch, and 12.7-12.8 should be attainable.
Safety Car
Joined: May 2008
Posts: 4,237
Likes: 11
From: Lacombe Louisiana
I just ran my best time 12.79 @112 with 3.15's a vararam and power duct with just a predator tune and corsa catback and a A4,you should do better! btw for the heavier wheels slow you down guys,this is the first time I ran it since switching from factory magnesiums to C6 ZO6 chrome wheels in 18 and 19's! Best I ran before was 12.82.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
What they said above!
It's the YANK and 3.42's that will really help - I would not go to 3.73's in an A4 if you go on long trips, they are a little aggressive for the A4, anyway the 3.42's will be a nice upgrade over the 3.15's!
I went from 3.15's to 3.42's and it was well worth it!
Thanks,Matt
It's the YANK and 3.42's that will really help - I would not go to 3.73's in an A4 if you go on long trips, they are a little aggressive for the A4, anyway the 3.42's will be a nice upgrade over the 3.15's!
I went from 3.15's to 3.42's and it was well worth it!
Thanks,Matt
Thread Starter
Drifting
Joined: Feb 2006
Posts: 1,600
Likes: 2
From: Outer banks North Carolina
It sounds to me like I may not need 3.42s to go into the high 12s! I previously went to 3.42s in my old "97" because it had the anemic 2.73gears which are a "joke" in a Vette. If I can reach my vobjective with out a gear swap I'm lovin it! I have already got the 3.15s and shorty headers which were on the car already when I got it.Maybe with a tune and a c.a.i. I can be in the 12's. Also, does a predator tune eliminate the stupid "torque managment"? . My car has the active handeling/ traction control also, which I try to remember to turn off every time I drive.
to you all, Dave
to you all, Dave
Drifting
Joined: Jun 2007
Posts: 1,437
Likes: 5
I went from 2.73 to 3.15 to 3.42 and each of the 3 series gear sets were with a Vig 2800 stall.
And I can tell you that I did feel a difference between 3.15 and 3.42.
I wouldn't go higher than 3.42 personally. Beyond that, it really starts to become a 1/4 mile gear. Many opinions there though. I just think the 3.42 is the perfect balance of performance and practicality.
Go for it!
And I can tell you that I did feel a difference between 3.15 and 3.42.
I wouldn't go higher than 3.42 personally. Beyond that, it really starts to become a 1/4 mile gear. Many opinions there though. I just think the 3.42 is the perfect balance of performance and practicality.
Go for it!
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Apr 2005
Posts: 10,179
Likes: 2,306
From: Wesley Chapel, FL Las Vegas, NV
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
12.73 @108.66 with just Blackwing, Predator and 3.15's here.
Safety Car
Joined: Apr 2008
Posts: 4,833
Likes: 1,850
From: NJ
2025 C8 of the Year Finalist - Modified
2023 C8 of the Year Finalist - Unmodified
2022 C7 of the Year Finalist - Modified
2021 C7 of the Year Finalist - Unmodified
Geaux Tigers!!!!
Joined: Nov 2007
Posts: 2,732
Likes: 424
From: DeRidder LA
St. Jude Donor '08 thru '26
On my 2000 model you can go into the Predators program and turn the T/M off..You are going to hear alot of pros and cons on this subject but I've had my mine turned off the past couple of years with no problems..
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Howdy Dave 
:
My Predator took an honest .15 off my 1/4 mile ET. My 3.42 upgrade took another .15. Then my lame converter upgrade took a good .1 off the ET. I went from a consistant 13.3x stock... now to 12.8x.
:My Predator took an honest .15 off my 1/4 mile ET. My 3.42 upgrade took another .15. Then my lame converter upgrade took a good .1 off the ET. I went from a consistant 13.3x stock... now to 12.8x.
Thread Starter
Drifting
Joined: Feb 2006
Posts: 1,600
Likes: 2
From: Outer banks North Carolina
Thanks Mike, I live down here on the Outer banks now but I used to live in Vienna west Va. I raced in the old "gas" classes [d-g] back in the 60's at National Trails [Colombus] raceway with a 55 chevy. I also ran a "57" Vette in modified production with a "301" with hillborn injection and a b&m hydro, 5.13 gears etc... They were great days and Ohio was the king state for gassers! Now after many streetrods and drag cars I'm just an old fart who still likes the feel of accelleration!
Still kicken, Dave
Still kicken, Dave
