Reply to "Proper fuel for 71 high compression"

markcharltonOld enough to know better and still young enough not to care. My '71 Pantera

The car has the original 351C 11:1 compression engine. The PO used the Sunoco 94 octane with 104+ octane boost. The timing has been set back to 2 or 4 DBTDC. It runs OK, but like I said, I want to know that I'm not doing any damage with this coctail. I'm in Ontario, Canada and both racing fuel and avgas are readily available but also not legal for street use. Since my car has only 14000 miles, I want to keep it as original as possible. Also, the cost of a rebuild may be a bit much. How would that improve it's running ability on regular pump fuel? Would I not need to reduce the compression and thus the power? What did these things run on in the 70s when Ford was selling them? Thanks for the help.

5/8/0411:41 AM

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