Do I really need C16

[69Cobra]

Hello all,
I'm just wondering if I really need C16. It is what was used on the dyno. It is a 428 Cobra Jet with 15:1 compression and I will be running it to about 7200.

[Pooch565]

If it is a naturally aspirated only application, you could run C14 if you like. If you ever plan to spray it, I would stay with the C16. Hope this helps.

Jason

[69Cobra]

Thanks, this is a N/A engine. What is the differents between 14 and 14+?

[Pooch565]

C14 and C14+ have the same burn speed and specific gravity. The C14 is a 114 motor octane and the C14+ is a 117 motor octane. It has an extra gram of lead per gallon. It is for Comp Eliminator type engines. High compression and high rpm.

Thanks,
Jason

[69Cobra]

Thanks again, what are the prices of those two for a 54 gallon drum?

[Maximum Race Engines]

Pooch-
I like c14 up to 15.1 and c14+ from 15.1-16.1, however, you mentioned c14+ @ 117 octane, but the site says one more point in compression @115. Which is it? I know c19 is 116, and we run that for over 16.1, again all N/A.