12 Second Club In the 12s yet? Come inside!

Why is my mph so low

Old 06-13-2017, 12:53 PM
12 Second Club
Thread Starter
Join Date: Nov 2010
Posts: 21
Default Why is my mph so low

I ran my car at the track a week ago with a da of 1800 (1968 Camaro 5.7 ls1 swap tuned, headers,th350 with 3500 stall,4.11's 12 bolt, bbk intake and 88m tb, 28" tall drag radial ) it ran best of 12.5 at 108.6 with a 1.73 60 foot. My question is I see tons of others running same ET with 112-117mph on almost stock motors.
406ci68camaro is offline  
Old 06-14-2017, 08:43 PM
12 Second Club
iTrader: (15)
Z28SteveA4's Avatar
Join Date: Apr 2008
Location: New jersey
Posts: 546

At that da and the weight of your car that's looks to be about right to me. A full weight Bolt on auto ls1 car in good da is really only going to mph around 112
Z28SteveA4 is offline  
Old 06-20-2017, 12:31 PM
TECH Fanatic
iTrader: (8)
mOtOrHeAd MiKe's Avatar
Join Date: Mar 2007
Location: Ottawa Ontario, Canada - where arguing "DA" is for the slow and weak...
Posts: 1,089

Go to a shorter tire and raise the limiter.
mOtOrHeAd MiKe is offline  
Old 06-26-2017, 01:05 PM
Teching In
Jayme_302's Avatar
Join Date: Apr 2011
Location: Baytown, TX
Posts: 29

the stall kills some MPH also
Jayme_302 is offline  
Old 06-26-2017, 06:37 PM
12 Second Club
iTrader: (2)
murphinator's Avatar
Join Date: Sep 2009
Location: southern Maine
Posts: 1,652

if your comparing to 4th gens with similar mods its the aerodynamics - 68's are beautiful cars but the windshield is straight up in comparison to a 4th gen - see it all the time with swap cars et decent but mph low.....
murphinator is offline  
Old 08-25-2017, 10:47 PM
12 Second Club
Thread Starter
Join Date: Nov 2010
Posts: 21

Thanks for the answers guys I broke the timing set on that motor and just started up my new forged ls1 383 tonight and it sounds a bit more roudy. I'm sure the mile will go up now.
406ci68camaro is offline  
Old 09-04-2017, 07:09 AM
10 Second Club
Doug G's Avatar
Join Date: Aug 2010
Location: Harford Co. Maryland
Posts: 3,894

I have to agree with the above "Aerodynamics".... I have seen lots of "new cars" run same ET with more MPH than I did at.
They really come on strong at the top end of the track, don't they.
Doug G is offline  
Old 09-05-2017, 09:24 PM
10 Second Club
Romulus22's Avatar
Join Date: Oct 2016
Posts: 250

Those other cars trapping higher with the same et also probably have a 2.1 60' though
Romulus22 is offline  

Thread Tools
Search this Thread
Quick Reply: Why is my mph so low

About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: