+2

 

I know lots of guys that run 87 octane in their blower trucks.

Majority are lightnings with 8lb lowers and factory short blocks. Hell two weekends ago I was helping a buddy move and we was pulling his tractor on a steal flat bad with the 87 octane tune on his lightning.

 

Lol on the list with a little refreshing of everything around the gears...along with rebuilding the tranny (155k currently).

That's good to hear fatherford!!

 

Lightning internals are not the same as 3v internals... Apples and oranges

 

The rods are the same crappy rods. If there was ANY detonation it would snap those just as fast as ours.

The forged pistons might be SLIGHTLY more forgiving, but that still doesn't prove anything. As long as we don't have detonation we have nothing to worry about.

 

Exactly. Tuning can have timing for 87 or 85, even. My first tunes from Troyer were.....87 perf, 87 towing, and 91 perf......still the same old stock bottom end.

Iirc, we have debated many times and about the 87 cost savings and concluded that the better gas mileage and cost effectiveness came with higher octane, better mpgs and performance.
Our best here is 91 and it is much more expensive than 87, $ 0.17, so around + $ 3.74 for my ~ 22 gals, fugetaboutit.

 

I think the best way to go is get a low psi pulley and tune in case of gas shortage. Just keep the pulley and belt in truck or handy. I wouldn't worry about running 87 as long as you take it easy. Just don't floor it to where it starts building some real boost. Just cruising around should be fine.

You do bring up a good point in case of a natural disaster premium gas can be hard to come by.

 

Mike and I were discussing 12psi on these motors this past week and he was telling me about a gentlemen in Alaska running 12psi on a stock motor with 90 octance. He had 277,000 miles on her. Very impressive! Obviously he isn't beating the crap out of it. And Mike said he is not making the power that most would make at that level. But he was running on 90 octane with 12psi on Troyer tunes. So good news, it can be done. Now sc that sob and get yourself some tunes from Mike. A good daily tune and an ah sheet tune for when there's no premium.

 

IMO it's worth the extra .50 cent per gallon for the insurance. I mean, why risk detonation?

 

You missed the point of this thread...its not to save money...its for if you find yourself with NO access to anything more than 87 oct.

 

LOL like when you're stuck in the desert or BFE?

No really though, who DOESN'T have 91 ? Most people complain when they can't get 93 or higher, not the other way around.

Sure, an engine with forced induction CAN be tuned with 87, but the timing and AFR are going to be VERY limited, and it really isn't worth the risk of detonation. 87 is going to burn faster, plain and simple, which is more cause for detonation. Plus, sometimes you can't hear detonation, even though it's there.

 

I was living in New orleans for Katrina...all the gas was sold out and they couldnt get deliveries...and the surrounding areas...there was times I had to take what I could get after sitting in a long line. Not likely to happen again...but wanted to ask the question anyway.

 

This is what happens when you don't read the whole thread. Others have already said and the op already pointed out he has been in a situation where there was none available during a natural disaster.
A lot of people buy trucks for their utility and ability to handle tough conditions and that is severely limited if your truck can't run on anything but Premium.

 

also if you read the thread, you'll see where people said it can be done but sholdn't be done

 

Store gas...

Problem solved.

I keep around 55-60 gallons stored, and keep vehicles at half tank or more.