[DieselEater]

My choices are as follows, due to rules:

- C12
- Sunoco Purple
- Track Tech (TT-111)

This is a 14.5 : 1 BBC (470ci)
solid roller, High RPM pulling engine

Thanks all,

A...........

 

[Jebchevelle]

dont know anything about those fuels but ill give you a bump

 

[DragRacer]

For 14.5:1 BBC the only one of those choices I would use is VP C12.

If you can get Sunoco Supreme (blue) that will work as well.

TrackTek 114 (green) would work also.

At just under 14:1, I've had good luck with both of the above mentioned fuels.

 

[trmnatr]

VP C12 or VP 113 but get tuned into VP C12 first

 

[DieselEater]

The C12 seems to be the most popular, as far as the input I've gotten...

Thanks,

A.......

 

[71monteme]

that much compression, i would go to c-14 or better. we run a 15:1 and was specified c-15 by Reher-Morrison. hope that helps.

 

[DieselEater]

It's not on my approved list, But, now you have me wondering??

I am in Colorado, so i can probably get away with a bit less octane right?

A.........

 

[DieselEater]

Older post, but I forgot about it...LOL



Does the elevation help me to use lower octane fuel such as Sunoco Purple, or TT-111 safely???

I've been using the purple, and haven't noticed any pinging, but, open headers doesn't help with detection of that?!

The TT-111 is 7 bucks a gallon, and very available....Just want to know that it will not hurt things in my engine at 5-6000 feet elevation.


Thanks,



A.........

 

[rustbucket79]

One of my customers has used the purple for years with 13:1 and 275 to 325 worth of nitrous at 600' elevation.

If you aren't seeing fly poop on the porcelain in your spark plugs with the Sunoco Standard, keep using it. It's a decent fuel.

I do feel your elevation helps, but I would let the spark plugs be the final word on octane.