What fuel with Fast By Ferracci 12:1 high comp pistons?

[ducpainter]

sounds like i need High test! FBF has not returned my calls yet!

You may also need to retard the timing.

[lwszabo]

You may also need to retard the timing.

Is this hard to do? I would think FBF would set everything up right!?!

[Ddan]

I put J+E 11.1:1 pistons in my 900SS and with the timing fully retarded I still get some ping on high-test, but I'm a bit lean too.

[ducpainter]

Is this hard to do? I would think FBF would set everything up right!?!

It's not that difficult,but requires removing the left cover...and yes you would assume that they did.

Ride it with high test and if it pings badly we'll go from there.

[lwszabo]

No pinging, but it has full exhaust and an open airbox. I wonder if I should get a colsed airbox cover. it was tuned with all the mods, so we will see!

[ducpainter]

No pinging, but it has full exhaust and an open airbox. I wonder if I should get a colsed airbox cover. it was tuned with all the mods, so we will see!

If it was tuned with an open box leave it alone.

You can try mid grade, but I'm pretty sure your set up needs high test.

[Norm]

Run premium and get 1.1 modules or the newer Chec box. It's unlikely you really have 12:1, most are around 11.2:1 or 11.5:1, although true 12:1 can be had and still run fine on pump gas.

[lwszabo]

Run premium and get 1.1 modules or the newer Chec box. It's unlikely you really have 12:1, most are around 11.2:1 or 11.5:1, although true 12:1 can be had and still run fine on pump gas.

I never thought of that, I am sure there is really no true drop in 12:1 kit! I have had no problem. Thnaks . luke

[Duck-Stew]

FBF has not returned my calls yet!

Don't hold your breath....   

[Porsche Monkey]

You may also need to retard the timing.

Ha ha ha he said retard