Raced my brother last week, never posted it.

His mods and car:
96 Formula. OEM ram air (gutted), 3.23s, Pacesetter LTs--->flowmaster catback, drag radials

My mods and car:
97 Trans Am. OEM ram air, 3.42s, 3200 stall, tune, street tires

I pulled pretty good at first (til 50) and we stayed at the same place til 70 and then he pulled back up to me. We were about even at the 1/4 mark and he kept flying past me.

Basically if I had DRs I would have beat him in the 1/4 or at the track, but in the street he has me beat. Especially from a roll and up top.


There are talks of him running 91 octane as opposed to the 87 he was on and I'll open my cutout. I think the outcome won't change at all.

But if/when we do... HD VIDEO!

 

Those LT's are going to help him pull hard up top allowing all that air to move faster.

 

I pumped up the tires. They were at 12psi. Now they are at 30. I know with the 91 it will help. By how much, I don't know. Maybe a tenth. We will leave nothing on the table. All out ***** to the wall nasty angry badass speed.

 

Good runs... why aren't you running premium?

 

Cause he's tarded. My first girlfriend was tarded. Now she's a pilot.

 

It was left in the tank. My car was running horribly rich on the driver side. So instead of putting in 91 while I figured it out, I put in 87.

 

Racing w/ 87 is plain retarted. Its like pulling a spark plug.

 

Actually, running with 87 with no knock retard will be FASTER than running 91.

 

That's making a huge assumtion that any LT1 or LS1 could make a WOT pass on 87 without knock.

 

I think its more of a "higher octane is not always better" statement, more so then a "run 87 cause its better".

 

I am well aware of that but in the context of this thread..............

 

Great movie!

 

Yes, ok lets think about this: Running a more flammable gas makes you faster? Hell why dont we all run diesel?

Its not going to produce a 'larger' explosion than 93, its just going to combust at a lower temperature.

How that makes more power is beyond me. Then again if thats true why the hell do we have race gas? Oh yeah thats because higher compression motors/FI will detonate. Even a stock LT1 will pull knock timing on a long enough WOT run w/ 87(you will never hear it knock so you would never know)..Unless you have a scanner I bet your car is pulling timing. Which is exactly why even the GM manual says 'for best performance use premium'. Even ION from MadZ28 told me when I asked him if it was 'ok' to run regular he stated that it was fine as long as you don't run high RPMs for a while - implying that timing will be pulled/knock retard.

In the end I have no idea where you are coming from...explain please:

 

No, a simple google search could help you acquire the very answer to this rather basic rule of fuel octane vs. burn rate vs. power.

 

What you are not understanding is you want to run the lowest octane fuel that your motor will allow without knock...that said, I do not know one LT1 or LS1 owner that runs anything less than medium grade. Once you go forced induction or nitrous, why would you even want to chance it?

The only cars that I know of that run well and use 87 octance are the new Mustang GT's and there is no audible pre-detonation in the cars stock.