460 mileage
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Joined: Mar 2006
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460 mileage
I have a question about my 460, I have been told that I can swap my timing gear set for a set from a 429 and improve my gas mileage, has anyone had this result or performed this procedure with any good results?
Post Fiend
Joined: Jul 2003
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From: Spokane, WA
There's a ton of good info on this in the 460 forum on FTE, but here's one thread in particular that will help: https://www.ford-trucks.com/forums/s...d.php?t=194913
Basically the 70's 460's were set up for lower emissions but part of that was a retarded timing set that also cost a little bit of power. By switching to a "non-retarded" timing set you can gain some of that power back.
Welcome to FTE!
Basically the 70's 460's were set up for lower emissions but part of that was a retarded timing set that also cost a little bit of power. By switching to a "non-retarded" timing set you can gain some of that power back.
Welcome to FTE!
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Hello- Welcome to FTE! I have moved your post to the specialized forum we have here for your question. Check out the list of tech forums we have on FTE. There is a wealth of information and expertise here to help you. There are a number of links in my sig below to help you also. Have fun! 
Post Fiend
Joined: Oct 2003
Posts: 9,176
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From: Western Central NV
First if you buy a timing chain for a 429 you will get a 460 chain. The only way to get a 429 chain is to buy like a Cloyes 3 keyway set {True Street Roller}. 460s 72 and later are retarded from the factory to meet smog. buying a 69-71 460 set you will beable to set up your timing to TDC. with a chain like Cloyes you can set 4 degrees retard, TDC, 4 degrees adv. Setting 4 degrees retared will give you more torque, many don't know that many of the [Hi Pro 429 came that way from the factory]. 4 degrees adv. will give you more speed. TDC will give improvement over the factory 8 degrees retarded, 72-97. 69-71 were TDC.
As for gas mileage 460s do what they do, I haven't noticed any great mileage change. I get 9-11 MPG. I'm running a Cloyes True Street Roller 4 degrees retarted from TDC, Holley 4160 600 CFM, on an Edelbrock Performer manifold. in an 86 F250 4x4 460, C6, 3:55 gears.
Hope this helps.
As for gas mileage 460s do what they do, I haven't noticed any great mileage change. I get 9-11 MPG. I'm running a Cloyes True Street Roller 4 degrees retarted from TDC, Holley 4160 600 CFM, on an Edelbrock Performer manifold. in an 86 F250 4x4 460, C6, 3:55 gears.
Hope this helps.
Freshman User
Joined: Jan 2006
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Degreeing the cam is based off of crank degrees. If the cam has a 110 degree intake centerline with the cam installed straight up and you advance it 4 degrees you will then have a 106 degree centerline. That means the valve will open & close 4 degrees sooner. Thus creating more touqre sooner. I would buy a double roller timing chain, it dosen't stretch as easily and when the chain stretches your cam timing retards.
Jason
Jason
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