I'm looking for some input on my 1/4 mile times? My mods are in my sig. But in short my combo put down 413/400 to the tire on a Dyno. Today at Numidia dragway the DA was 2500ft and I ran a best of 12.9 @111mph. I'm on street tires and my 60' time was 2.024 my car is full weight. And I'm about 200 lbs. I figure my race weight is probably around 3700 lbs. are my times inline with the power I'm making or no? Obviously with a better tire and quicker launch I should be faster. But how much do you guys think I'm leaving on the table here? Thanks for your input

 

Your trap is a little low. Have you ran before at other tracks?

 

Well I ran at this track when I was cam only and ran a 13.2 at 109mph. I also ran at one other track cam only and I was 12.9 at 111mph. I know it's a slow track because of the higher DA. But I picked up 3 10ths and 2 mph after a head swap. I was expecting a little more being that the Dyno said I picked up 43 hp and 30 ftlbs. So where do you think I should be with my trap speed?

 

DA and 60 foots are killing you. My stock internals bolt ons 174k full weight a4 went 12.1 @112 the only time I took it to the track( very negative DA) had a bad fuel pump , should run top 11's this fall. and I watched the previous owner of my stock internals bolt ons full weight M6 car go 11.9 @ 111 3 for 3 in its only track passes back when it only had 215k on it 242 k now ( I was there in one of my 4 door v6 SC w bodies due to low da's that night running low 12's). yes I am beating you over the head with DA lol its that important !

Get sticky tires and wait till the Da's are low and it will run much quicker for you , I never take any car to the track with bad da's or crappy tires you will always be disappointed ..

Your current trap says threshold of 11's with a good 60 foot and your da shows on a night with improved density your traps will improve - you have an 11 sec car to trap that well on a 2500 da night you just need to dot the i's and cross the t's , your car should trap close to 115 in negative da with proper cool downs.

 

Thanks for this valuable information. I'm gonna hold off till the fall and take it back to the track and see how it runs.

 

Your welcome , also pay close attention to guppymech's tire recommendation he is correct that a bias ply will work better with m6 it doesn't shock the drivetrain as hard and may save your 10 bolt to fight another day lol