Maximum compression with a hemi on E-85??

What would be the most compression a guy could run on E85 with out haveing to make compromises like retarding the timing? this would be a 4000 pound street car with 3.54 or 3.73 gears with a Passon 20% overdrive gear in the 4 speed. Specs on the motor:

484 Hemi 4.310 bore x 4.15 stroke
ported iron heads
hydraulic roller cam 226/230 at 542 lift 112 lobe centers
Inline street Hemi intake with AFBs
exhaust manifolds and 2.5" exhaust

Thanks, Joel

Back when I did my conversion, the research that I did showed that 15:1 was very doable. My 11:1 was considered to be on the low side to take advantage of the octane rating of E-85. My first time down the track with E-85 was within .1 of my very best time on pump gas with no timing change.

What is the octane rating for E85? Did you have to rejet for it?

WOw, 15 to one is really up there. I don't think I want to go that high. What is the octane rating of E-85

THanks,Joel

where can I find more info about converting an old carburated engine over to E-85?
a quick search of the board only turned up this thread

thanks

Quote:

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where can I find more info about converting an old carburated engine over to E-85?
a quick search of the board only turned up this thread

thanks

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Mabe when you do a search you should just put

E85

And make the search for one year as I think default is 1 week. There is a ton if you are willing to do a search. Also google E85 forum, as well as E85 conversion.


https://board.moparts.org/ubbthreads/showthreaded.php?Cat=0&Number=4765041&page=0&vc=1



I think one of the members in the race section has 16:1 with E85