Tuning

jonnotch · February 11th, 2008, 01:01 PM

I have a 306 Efi 5.0 block 10:1 comp, 4.66 Lift cam stock heads and the motor is refreshed. I will be running 93 octane in this motor and I am curious what a good base timing is? A friend of mine was telling me about 12 degrees would be a good starting point also would 38 to 41 psi on fuel pressure be about right for this motor.

Thanks

jon

Goblin · February 11th, 2008, 01:06 PM

12 degrees to start with is fine. Work your way up until you dont notice an increase in power, or the engine loses power, than back it down a degree or two. With fuel pressure, adjust the pressure with the vacuum line off, and the port plugged. Richen the mixture (increase pressure) until you get the best performance at WOT. Adjust your timing first.

jonnotch · February 11th, 2008, 01:28 PM

thanks for the insight

February 11th, 2008, 01:01 PM	#1
jonnotch Regular Join Date: Feb 2007 Location: Chicago, Ill Posts: 54	Tuning I have a 306 Efi 5.0 block 10:1 comp, 4.66 Lift cam stock heads and the motor is refreshed. I will be running 93 octane in this motor and I am curious what a good base timing is? A friend of mine was telling me about 12 degrees would be a good starting point also would 38 to 41 psi on fuel pressure be about right for this motor. Thanks jon __________________ 1992 Mustang Notchback-306, road race project.

February 11th, 2008, 01:06 PM	#2
Goblin Hardcore Enthusiast Secret In The Works Join Date: Apr 2007 Location: Relocated Back To Tucson, Arizona Posts: 2,038	12 degrees to start with is fine. Work your way up until you dont notice an increase in power, or the engine loses power, than back it down a degree or two. With fuel pressure, adjust the pressure with the vacuum line off, and the port plugged. Richen the mixture (increase pressure) until you get the best performance at WOT. Adjust your timing first. __________________ Definition of Fast? I'd say thats good enough. NMRA Outlaw 10.5 Season Opener 2008 Photo courtesy of - Yours Truly

February 11th, 2008, 01:28 PM	#3
jonnotch Regular Join Date: Feb 2007 Location: Chicago, Ill Posts: 54	thanks for the insight __________________ 1992 Mustang Notchback-306, road race project.

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