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Bowtiepower00 · 03-25-2011, 05:13 PM

The regular vs. premium debate has been discussed at length in many threads in the V6 section.

Regardless of what GM's official word is with regard to the LLT, it does pull timing on 87 octane and WILL run better with higher octane fuel. Multiple V6 owners have dynoed with 87 and again with 91/93 and have posted their (improved) results. Scrming's dashhawk video also shows proof of timing being pulled on 87 octane fuel. Many V6 owners have also noticed an increase of 1+ MPG on premium fuel.

Here is an interesting post regarding 100 octane and the LLT (disclaimer, I have not seen any 100 octane dyno sheets to prove this, so take it for what you will...)

Reference post #61 here: http://www.camaro5.com/forums/showthread.php?t=86794&highlight=100+octane&page=3

Quote:

During the Hot Rod Power Tour I discussed what I had learned from the two dyno runs with a person walking into the Mid America Motorsports facility as follows:

1. Hytech Motorsports DynaJet Dyno 241 HP 224 TQ regular gas 87 octane

2. St. Paul Automotive Mustang Dyno 264 HP 222 TQ preimum gas 92 octane

The person then identified himself as an engineer from GM Performance Division and the results are exactly what we should expect from the 217 CI 3.6L V6.

He then stated with 100 octane gas the engine can produce ~300 HP at the rear wheels or 371-375 HP at the driveshaft. WOW! Why buy a V8?

If you use a higher octance fuel and drive the engine hard you will see more horsepower out of the new 3.6 L.

03-25-2011, 05:13 PM	#30
Bowtiepower00 Drives: Previous Camaros: 69, 89, 11, 13 Join Date: Jan 2011 Location: AZ Posts: 136	The regular vs. premium debate has been discussed at length in many threads in the V6 section. Regardless of what GM's official word is with regard to the LLT, it does pull timing on 87 octane and WILL run better with higher octane fuel. Multiple V6 owners have dynoed with 87 and again with 91/93 and have posted their (improved) results. Scrming's dashhawk video also shows proof of timing being pulled on 87 octane fuel. Many V6 owners have also noticed an increase of 1+ MPG on premium fuel. Here is an interesting post regarding 100 octane and the LLT (disclaimer, I have not seen any 100 octane dyno sheets to prove this, so take it for what you will...) Reference post #61 here: http://www.camaro5.com/forums/showthread.php?t=86794&highlight=100+octane&page=3 Quote: During the Hot Rod Power Tour I discussed what I had learned from the two dyno runs with a person walking into the Mid America Motorsports facility as follows: 1. Hytech Motorsports DynaJet Dyno 241 HP 224 TQ regular gas 87 octane 2. St. Paul Automotive Mustang Dyno 264 HP 222 TQ preimum gas 92 octane The person then identified himself as an engineer from GM Performance Division and the results are exactly what we should expect from the 217 CI 3.6L V6. He then stated with 100 octane gas the engine can produce ~300 HP at the rear wheels or 371-375 HP at the driveshaft. WOW! Why buy a V8? If you use a higher octance fuel and drive the engine hard you will see more horsepower out of the new 3.6 L.