0 degree timing
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Elder User
Joined: Jan 2004
Posts: 668
Likes: 3
From: NW Kans
0 degree timing
i've seen threads on here about using an earlier timing chain set (0 degrees) for better performance from a 460, but how do i know if i already have it? i bought a new truck with a 460 in it but i dont know what year of motor it is or what has been done to it. i havent looked at block or head casting #s yet so i can't help u with that. also, if i swap in the early timing set, is there anything else that i need to check, change, or adjust?
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
well a couple of things, if it has a stock original timing set in it, then replace it and don't worry which one it actually has because if it's original from 1970 it's probably worn out and if it's not worn out then it's most likely a later model timing set. Next if the heads are D3VE, change it because most likely it's the late model set. If it's a aftermarket set then about the only way your going to be able to tell is degree the cam and see where it's set at, or just change it because you want to.
As far as other adjustments about the only other thing is your going to have to reset your ignition timing cause changing cam timing will also change the ignition since the dist is run off the cam.
As far as other adjustments about the only other thing is your going to have to reset your ignition timing cause changing cam timing will also change the ignition since the dist is run off the cam.
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Elder User
Joined: Jan 2004
Posts: 668
Likes: 3
From: NW Kans
what about just advancing the set i have a couple teeth? i have read about doing that too. which would gain better performance? what exactly are we doing with this, just opening the valves sooner? what was the point of going to retarded cam timing?
Senior User
Joined: Jan 2006
Posts: 292
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From: Fort Worth,Texas
Originally Posted by lasthighboy
what about just advancing the set i have a couple teeth? i have read about doing that too. which would gain better performance? what exactly are we doing with this, just opening the valves sooner? what was the point of going to retarded cam timing?
Retarding the timing was started to help control emmisons. I would still rcomend a new timing chain and gears because you will have a new setup with out aney slop in the chain and it will let you set your timing with better accuracey and consitencey both cam and ignituon timing.
Bill
Cargo Master
Joined: Dec 2003
Posts: 2,735
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From: Sunny Florida
Moving the dizzy will not yield the same affect as the timing set because you have two different timing events happening here. One is the valve to piston timing which is where the timing chain comes in to play and then you have your spark timing or dizzy timing which of course is controled by the postion of the dizzy.
The best gain is from running the early timing chain set. if one adavances the dizzy to much you can end up with hard starting problems when the motor is hot and also cause valve pinging which can cause engine damage.
The best gain is from running the early timing chain set. if one adavances the dizzy to much you can end up with hard starting problems when the motor is hot and also cause valve pinging which can cause engine damage.
