05-07-2010, 07:23 AM
|
 |
CC Member
|
|
|
Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
|
|
Not Ranked
If the octane is notably higher than needed you'll loose power.
Here in AZ they sell the 100 unleaded at a few stations out of the pump. It works nice in a Roush 427R.
The higher typical other pump gas around her is about 91. It will destroy the pistons in the 427R with the tune I had.
|