my set up is in my signature, what do you think?

 

With a 10.2 compression ratio you should be able to get away with 89 octane...

 

you think so? I figured it would be too high... I do not want to use premium if i do not have to.

 

I'd say premium, 91 octane. with optimal timing 36*.

Try and find out. My setup knocked like crazy on 87 octane, when I forgot once.

 

my motor can be only timed by ear since the timing mark doesnt show on my balancer...

 

Good grief!

I use 91 on my 350 HO Deluxe (the manual calls for 92, but I've experienced on problems).

JamesC

 

well if you want the best bang for your buck your not even close... there is a reason new motors have knock sensors its to cope with the crappy gas

Compression Octane Number Brake Thermal Efficiency
Ratio Requirement ( Full Throttle )
5:1 72 -
6:1 81 25 %
7:1 87 28 %
8:1 92 30 %
9:1 96 32 %
10:1 100 33 %
11:1 104 34 %
12:1 108 35 %

no one ever runs what is best for there car except race teams...a nd the fact its hard to find anything above 93 octane in most areas...

that info came from here 7. What parameters determine octane requirement?

 

lucky for me 93 is common on the east coast, its what i currently run

 

Sorry wez, but i gotta call crap on the chart you found.


If that chart is right i should be running c11/c12 race fuel, not the 91 octane i am!

 

How do you do that?

"Dad, does this sound like 36 degrees? " "no son, that sounds more like 38, back it up"..

How do you even tune the thing for max performance when you can't even figure out your total advance..

-- Joe

 

i know i know advance it till it runs like ****,, then back it down 2 degrees..

 

I used to go by the advance it until you don't go faster or it knocks, then back down.. I blew up a nice 11 second 355 that way... But it was my fault.. You can only run so little injector before it comes back to haunt you.

-- Joe

 

That comp with cast heads and I would run premium.

 

well if you magically make a mark that would show up on a timing light and a magical timing tab to go along with it then perhaps we could get somewhere.