could runing 87 octane cause me to go from a 13.2 to a 13.7 ?i run the 13.2 on a mix of 2 gal of 93 and 3 gal of 110 and the 13.7 was on a full tank of 87

 

isn't grammar a wonderful thing?

try better gas and see what happens

 

Gas will get you places, but better grammar and spelling is for life

 

isn't grammar a wonderful thing?
did i ask to be made fun of

 

Hey sorry man nothing personal but after reading that initial question I couldn't understand what the heck you were asking.....

 

Lol he asked if running 87 octane would slow him down by half a second in the quarter mile. He used to run a 13.2 1/4 mile using 2 gal of 93 octane mixed with 3 gal of 110 octane. Now he runs a 13.7 1/4 mile with a full tank of 87 octane.

My response is that part of it could be the added weight of a full tank. If you ran a full tank, you ran three times the weight in gasoline that you normally do (6.2lbs/gal, 15.5 gallon tank = ~96lbs; 5 gal = 31lbs)

 

ask bc of dedination caused by not using higher octane gas

 

two weeks ago i run that 13.2 no changes to the car but that gas i run 13.7 same track and all.

 

With a 10:1 CR and aluminum heads it is very reasonable. That combo is not at its best performance with 87 (high CR and aluminum heads with a higher fuel volatility, ie low octane, = poor performance).

 

what i was wanting to hear

 

With 10:1 SCR you'll definetly be wanting to run at least 91, like shifty said it's a definite possibility.

 

can you post the full time slip rather then just the ET?

 

6/8/07 6/22/07
r/t 0.066 0.027
60 2.020 2.042
330 5.612 5.701
1/8 8.567 5.761
mph 82.99 81
1000 11.128 11.459
1/4 13.290 13.692
mph 104.31 100.91

 

I noticed a small power gain, specially at higher rpms when I switched from 87 to 92 grade gas.