Fuel Factory

Alan Roehrich · 05-12-2025, 07:18 PM

For us, in a Stock 427/425, and a Super Stock 396/375, Sonoco was slower, down about 10 on HP, than C12, and I made the most power on C14+.

The main cimplaint with C12 is that it sometimes didn't pass fuel check, even from a fresh, just opened VP drum on their trailer. NHRA would always "adjust", however it was a hassle, and sometimes they wouldn't re-instate a qualifying shot.

A lower compression and/or smaller engine might not care.

05-12-2025, 07:18 PM	#8
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,118 Likes: 1,573 Liked 1,836 Times in 417 Posts	Re: Fuel Factory For us, in a Stock 427/425, and a Super Stock 396/375, Sonoco was slower, down about 10 on HP, than C12, and I made the most power on C14+. The main cimplaint with C12 is that it sometimes didn't pass fuel check, even from a fresh, just opened VP drum on their trailer. NHRA would always "adjust", however it was a hassle, and sometimes they wouldn't re-instate a qualifying shot. A lower compression and/or smaller engine might not care. __________________ Alan Roehrich 212A G/S