Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
Apex Paul
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Forced Induction - V8


Reply
 
Thread Tools
Old 08-02-2015, 11:12 PM   #1
VASTREETRACER
 
Drives: 2010 Camaro SS
Join Date: Dec 2014
Location: United States
Posts: 25
whipple/gears roll race question

This fall I'm doing a roll race at Pocono speedway. the race is from a 60mph roll and goes 1600 feet. I have 4.11s in my car from before I got my whipple. I'm guessing I will be going into 5th gear somewhere around 135mph. My question is would I be better off swapping back to my stock 3.45, buying 3.73 or just sticking with the 4.11s. By the time the race comes around I will have swapped in a BTR stage 3 blower cam and a 3.625 pulley.(not sure that will make a difference in my decision). The car is daily driven and really sees very little track time. Thanks in advance
__________________
2010 Camaro 1SS/RS, whipple 2.9l, 3.875 pulley, ls9 cam, tsp headers, 4:11 rear, cai intake, custom tune. 670rwhp 585rwtq
VASTREETRACER is offline   Reply With Quote
Old 08-03-2015, 11:36 AM   #2
old motorhead

 
Drives: Maggie blown LS3 vette
Join Date: Aug 2009
Location: SE TX
Posts: 1,416
I bet it won't make a huge amount of difference either way. You're going to be at full boost throughout the run anyway. You might have one less shift with stock gearing. I'd be more worried about the start vs the finish. What rpm and what gear are you in at 60mph, stock rear vs 4.11's?
old motorhead is offline   Reply With Quote
Old 08-03-2015, 12:49 PM   #3
Jeff_SS
Cam only
 
Jeff_SS's Avatar
 
Drives: 2013 AGM 2SS/RS M6
Join Date: Nov 2011
Location: Thousand Oaks, CA
Posts: 1,365
Quote:
Originally Posted by VASTREETRACER View Post
This fall I'm doing a roll race at Pocono speedway. the race is from a 60mph roll and goes 1600 feet. I have 4.11s in my car from before I got my whipple. I'm guessing I will be going into 5th gear somewhere around 135mph. My question is would I be better off swapping back to my stock 3.45, buying 3.73 or just sticking with the 4.11s. By the time the race comes around I will have swapped in a BTR stage 3 blower cam and a 3.625 pulley.(not sure that will make a difference in my decision). The car is daily driven and really sees very little track time. Thanks in advance
If it helps at all, I have 3.91's and shift at 7100rpm
I do mostly half mile dig events.
I cross the 2640' line at around 6400rpm in 4th at 148mph
__________________
2013 AGM 2SS/RS M6. Hurst, NPP | CMS Custom Grind Cam, Kooks 1 7/8" LT Headers & High-Flow Cats, 3.91's, CAI Intake | Pfadt 1.25" springs | MT DR's | Tuned by Ryne @ CMS 483rwhp 433rwtq (mustang dyno)
Jeff_SS is offline   Reply With Quote
Old 08-05-2015, 03:38 PM   #4
D3R3K
Sittin side ways
 
D3R3K's Avatar
 
Drives: 2010 2SS/RS IOM
Join Date: Nov 2012
Location: Arlington,Tx
Posts: 108
Ive been 171 in the TOP of 4th at 7500rpms with a 3.45 rear.
__________________
850+hp club member
Procharger F1-A
D3R3K is offline   Reply With Quote
Old 08-05-2015, 04:26 PM   #5
fif_gen_powa
 
fif_gen_powa's Avatar
 
Drives: 2013 SS Blue Ray Metallic
Join Date: Apr 2014
Location: Ft. Lauderdale, FL
Posts: 505
Quote:
Originally Posted by D3R3K View Post
Ive been 171 in the TOP of 4th at 7500rpms with a 3.45 rear.
__________________
Huron Speed Turbo Kit, Comp Turbo 78/79 billet wheel/ball bearing/oil less turbo, 4" intercooler, zl1 pump, msd bap, FIC 850cc injectors, g-force 2 boost controller, Monster street twin disc clutch
https://instagram.com/turbo_camaro_ss/
fif_gen_powa is offline   Reply With Quote
Old 08-07-2015, 02:33 PM   #6
VASTREETRACER
 
Drives: 2010 Camaro SS
Join Date: Dec 2014
Location: United States
Posts: 25
Thanks. I know third to fourth I shift at 90mph at the redline of 6500 and I never really paid attention to 4th to 5th. I think @ 60mph im in the 4200 rpm range but not sure lol its been a while since I have really played around
__________________
2010 Camaro 1SS/RS, whipple 2.9l, 3.875 pulley, ls9 cam, tsp headers, 4:11 rear, cai intake, custom tune. 670rwhp 585rwtq

Last edited by VASTREETRACER; 08-07-2015 at 04:57 PM.
VASTREETRACER is offline   Reply With Quote
Old 08-07-2015, 04:53 PM   #7
sr71bb
 
sr71bb's Avatar
 
Drives: 2010 Camaro
Join Date: Jul 2010
Location: Dallas
Posts: 226
Roll Race

Well you NEVER EVER want to go into fifth gear on a short roll race like this. It will absolutely kill your momentum. Gear the car where you will be going max RPM around the finish line in FOURTH gear. I would suggest 3.73 gears and a 28 inch tall tire.
__________________
__________________________________________
Here is TAZII at the TEXAS MILE
ALL THROTTLE........ NO BOTTLE!!!

Look at 2:04 mark in Video for BLACK SS

http://www.youtube.com/watch?v=-pEQ9WrKzWg

NOW POWERED BY PROCHARGER by
Http://www.Advancedmodernperformance.com
sr71bb is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:19 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2015, vBulletin Solutions, Inc.