Hey everyone,
It’s winter, I’m bored, and I have the parts in my bin so decided I’m going to swap my BF 2.93 over to a 2.76 ring that has been in the box for 15 years. With the 2.93, I’m currently running 21* of timing on 91 octane and showing about 12#s through my ported Eaton/TB/plenum. I’m showing WOT A/f is pretty consistent between 11.6 - 11.8 with my wideband. With a 2% add of WOT fuel I’m usually right around 11.4 - 11.6. Can add more if needed. My question is if I add a couple #s with the 2.76, how do you feel about 21* on 91? Think I should shoot for 11.5ish or would you be comfortable with a little more around 11.7ish AFR? Car is strong and makes right over 500 rwhp but from my previous Terminators, I like a little more torque early on for the street fun factor that I had with my 2.76s. For what it’s worth, running a Steeda CAI, Magnaflow catted x, Borla stingers, and have twin SVT focus pumps. Of course, already have the basics such as idlers, plugs, etc. Don’t have MAF counts readily available because of my dated Xcal2 but will check A/F using the wideband. Air is dense now being winter and if we are good now, wouldn’t be worried at all about warm summer air.
It’s winter, I’m bored, and I have the parts in my bin so decided I’m going to swap my BF 2.93 over to a 2.76 ring that has been in the box for 15 years. With the 2.93, I’m currently running 21* of timing on 91 octane and showing about 12#s through my ported Eaton/TB/plenum. I’m showing WOT A/f is pretty consistent between 11.6 - 11.8 with my wideband. With a 2% add of WOT fuel I’m usually right around 11.4 - 11.6. Can add more if needed. My question is if I add a couple #s with the 2.76, how do you feel about 21* on 91? Think I should shoot for 11.5ish or would you be comfortable with a little more around 11.7ish AFR? Car is strong and makes right over 500 rwhp but from my previous Terminators, I like a little more torque early on for the street fun factor that I had with my 2.76s. For what it’s worth, running a Steeda CAI, Magnaflow catted x, Borla stingers, and have twin SVT focus pumps. Of course, already have the basics such as idlers, plugs, etc. Don’t have MAF counts readily available because of my dated Xcal2 but will check A/F using the wideband. Air is dense now being winter and if we are good now, wouldn’t be worried at all about warm summer air.
Last edited:
