Solid roller on the street?

[65coronetAFX]

108 lsa really tells little regarding cylinder pressure or detonation, and elevation matters considerably, for which there is no info

Saying you can run 11.5:1 without additional info is a bit worthless or misleading

Ok then I have ran it at both 80ft elevation at Sacramento raceway 10.30 @129.88 mph 91 octane gasoline
And at 3000ft elevation at firebird raceway and on the streets here in Boise Idaho 10.57@ 127.44 mph with both a automatic transmission and a manual 4 speed Jerico as well neither place had any detectable detonation at all
With the manual I lugged to see if it would ping and it did not
I run indy 440-1 heads a set of Ross flat top pistons 451 cid 3.75 stroke
Dominator 1050 cfm carb and a indy single plain intake
What more would you like to know ?

 

[BSB67]

What more would you like to know ?

Actually, I don’t care. But if you’re trying to be helpful to the OP, provide something helpful