your 8 to 1 static compression correct ?...which means before any boost is introduced...after bumping up to 16 lbs i promise your final compression ratio will be just fine for the alocohol..there is a final CR chart after boost..i have it packed away somewhere,,it was in my BDS catelog......and its an easy fix if NOT..take off the heads and have them angle milled to your desired static compression is reached..personally i would run what i had before doing that.
the old 8 to 1 compression street blowers was set beacuse there was a very low boost range (5lbs)...which still meant you could run pump gas on the street.....
i do not know what kind of a blower you have...if you have an older weind street blower or something like that you might be making all the boost you can...even if this is the case you can send it off to Mert Littlefield and they can line bore the case and strip or restrip the blower...which could failry easy double your potential boost..much much cheaper then buying new blower..
i ran a 671 BDS Stage 4 BIG BORE competition blower that was anadozied and stripped with nylatron and teflon ( alcohol/nitromethane) compatible...anyhow this blower was capable upward of 40lbs of boost...because of the type blower it was and the tight rotor tolerances..i only RAN 26 LBS for the record..
11 to 1 to 12 to 1 static is what is ideal for alcohol motors...but and 8 to 1 turning 16 lbs of boost will respond in a big kind of way COMPARED TO WHAT YOU HAVE..plus the injection will be so much more responsive than carbs.....
also do not know what your running for igintion...but if its less than a 7al..your gonna have to go to a 7al box MINIMUM..this will be enough to light the alcohol...but if you really want to do it right..a Magnetto will work best..i also ran a PRO-MAG 12 on my 572 blown injected altered.
also your gonna have to run a colder plug 2 or 3 steps colder and run around a .16 gap but no more than .20......
any other questions...there is plenty more folks on here with plenty of experience to share on this subject with you.
ps...for what you would pay for (2) GOOD BLOWER dominaters you could have done switched to blown alcohol and saved yourself a grand or so..
if your gonna stay gas and carb,,then do not waste the money on more carbs..
my opinion..i just do not hink for the money you will get the results you desire.
Brian