Pump gas compression again

MOPARMAGA said
Hey there friends,
I want to talk compression limits for pump gas, I have 92 in my area
(communist Seattle)
My build is a 70 dart swinger.
I have a 470 stroker about to be built
1973 chrysler 400 block 630 casting
I have everything aluminum that you can bolt on plus an aluminum 4 core radiator
Hooker ceramic coated 2 inch fenderwell headers
Molnar 3.915 crank
Molnar 6.70 con rods
4032 forged SRP pistons
Trick flow 240 heads
Howards solid f/t cam 260-264 @.050 duration with .616-.620 lift & intake closing at 68 advertised (edm lifters)
Effective crank stroke is 2.93
My static compression is 11.36
If my memory serves me it's 8.70 dcr
188 psi.
These are calculated numbers.
My question for you folks is how did your 11.0:1 - 11.5:1 compression bad *** a-body like pump gas, this car will be street driven some & raced some. I realize it's hard to hear pinging with 3 inch exhaust.
Give me some good news, I've heard it's no problem, then theres the 10.5:1 guys
And just want to give a special shout out to Ken for guiding me on the upcoming build

When you get it running do a compression check after you shut it off pull out number 1 plug since its easy to get to..You can pick.up a compression tester fairly reasonable...That will tell the tale of what gas to run..Remember..Aluminum heads let's you get by with more compression and lower octane as cast iron does...I'd say anything under 190 you can get by with 93..Do you have an airport close to where you live?..If so you can pick up some Av gas..I'd definitely fire it up and break it in on a higher octane fuel such as Av gas which is plenty enough octane around 100 I believe it is..That would insure that while you're breaking it in and leaning it out you'll have sufficient octane..Remember also that when you first fire it up have your timing light handy and set the timing somewhere around 13-14 initial timing and 34 advanced..