94 octane pump gas. 8 PSI on a stock 4200 is darn close to 400 HP.
This year the drivetrain upgrades will be completed, the 4L80E is built and waiting to be installed, the dana 60 went in last year and is now well broken in.
On 94 octane I can only run 10* timing at 10 psi. With alky being 130ish octane I bet the timing can go up over 30*.
efi-diy,
Have you thought about running a methanol injection system on pump gas?
They do really make a difference in power you can make while using pump gas.
As of right now, I can run 26 psi of boost pressure on 91 octane fuel. Intake manifold temps are as low as 59 degrees F @ 26 psi.
With you having 94 octane, you could possibly get away with more boost since we only have 91 octane here.
I would not worry about being only able to run 10* of timing, that engine probably does not need or require much to make power.
My piece a c#*p Syclone engine can run 14* of timing @ 15 psi on 91 octane, poor cylinder head design requires more timing to make better power.
How much did you raise the compression ratio to?
MBHD
