08-24-2009, 10:24 AM
|
 |
CC Member
|
|
|
Join Date: Aug 2006
Location: San Diego,
CA
Cobra Make, Engine: SPF1715, Roush Built 434 ci Stroker, Dart Block, Ported AFR 205 Heads... 561 hp / 547 tq, Former Roush Show Car, Completed and Prepped By Olthoff Racing.
Posts: 1,066
|
|
Not Ranked
You are not going to hurt your motor running the race fuel,if it runs better I would stick with it. I was running 111 octane in my motor and was having problems on the top end with hesitation, and after talking to roush I went to a mix of 91 and 111 and it runs great.I like the security the mix gives me against detonation over straight 91, but you can over do it like I did with the straight 111.
|