Thread: Timing point

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Hi!
I am searching now a good timing point for my Ford 460cui. The engine is no longer original. The problem is, with the TP from Ford, the engine is going to be too hot. These are the changed parts:

cam: Adv. Duration: 288°/292° Lift: .522''/.530'' RPM Range: 2500-5500
(Saturday Night Special from Crane cams)
heads: Coumbusion Chamber Volume:75cc
pistons: flat top pistons
intake: Edelbrock performer
carburetor: Holley 700 cfm
copression: ca. 1:10.4
distributor: electronic

I hope someone can help me to find the right point. If you need more informations, tell me.

I must be a little slow this morning. What is "TP"?

I think TP is Timing Point.

I think it should be something like 10-12 btdc at 800 rpm or so with 38 btdc all in by 3,000 rpm ...................

Be careful though, I'm a Chevy guy. I'm sure someone will be along with hard numbers.

Kitz

ok, i try it. Thank you!

Originally Posted by Krebskolonie

Hi!
I am searching now a good timing point for my Ford 460cui. These are the changed parts:

cam: Adv. Duration: 288°/292° Lift: .522''/.530'' RPM Range: 2500-5500
(Saturday Night Special from Crane cams)
heads: Coumbusion Chamber Volume:75cc
pistons: flat top pistons
intake: Edelbrock performer
carburetor: Holley 700 cfm
copression: ca. 1:10.4
distributor: electronic

I hope someone can help me to find the right point. If you need more informations, tell me.

If you have a 0.030 overbored 466 with flat tops and 75 cc heads, then you are well over 11:3 compression ratio. Standard bore would be closer to 11:1.

Assuming pump gas as a fuel, I would suggest 32* BTDC @ 3000 rpm. Any more timing that and you risk melting pistons without first doing spark plug readings and adjusting timking & jetting accordingly...it's not likely you'll need much more timing than that anyway.

Paul