460 refurbish questions
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Senior User
Joined: Jul 2003
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From: Cedar Rapids, IA
460 refurbish questions
I have just pulled the 460 from my 74 F250 (2wd) and am planning to do some minor work to it this winter, and need some advise on what to replace.
The oil pan needed replacing, and I am going to change it from a front sump to rear with a kit from Summit. I also had planned on changing the oil pump, water pump, valve guides, flywheel & starter (teeth on both are chewed up a little) and possibly the timing chain.
Since this will be my first time doing all of this, is there anything else that I should be looking at or replacing while I have the motor out? The engine seems to run well before, just smoked a little on first start up, which a friend of mine indicated valve guides.
Also, there was some type of extra oil filter set-up on the truck which I have no idea what it was for...hoping someone may know what it it. It is a cylinder about 4" diameter and 18" long with an oil filter attached to it. An oil line ran from the back of the intake manifold to the oil filter, then from the filter to the top of one of the valve covers.
Idea on any of my issues would be greatly appreciated.
The oil pan needed replacing, and I am going to change it from a front sump to rear with a kit from Summit. I also had planned on changing the oil pump, water pump, valve guides, flywheel & starter (teeth on both are chewed up a little) and possibly the timing chain.
Since this will be my first time doing all of this, is there anything else that I should be looking at or replacing while I have the motor out? The engine seems to run well before, just smoked a little on first start up, which a friend of mine indicated valve guides.
Also, there was some type of extra oil filter set-up on the truck which I have no idea what it was for...hoping someone may know what it it. It is a cylinder about 4" diameter and 18" long with an oil filter attached to it. An oil line ran from the back of the intake manifold to the oil filter, then from the filter to the top of one of the valve covers.
Idea on any of my issues would be greatly appreciated.
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Senior User
Joined: Jul 2003
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From: Cedar Rapids, IA
Anyone with any thoughts on what else I need to check or replace while I have the engine out of the truck? Also, anyone have any ideas on what the second oil filter assembly on my truck is for?
Thanks
Thanks
Freshman User
Joined: Apr 2004
Posts: 45
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If your going in to the timing chain, I'd replace with a pre-1971 timing set, asuming your still stock. It moves your valve timing back to TDC as opposed to the smog reducing, horsepower stealing 8 degree offset.
That's as deep as I have ever gone. Hope all works out.
That's as deep as I have ever gone. Hope all works out.
Cross-Country
Joined: Jul 2004
Posts: 52
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Rebuild Time
If the motor is out of the truck, you may as well get serious, particularly if you plan to replace the guides.
If it is a 74 and original and you plan to keep it:
1. Get rid of the extra oil filter, you don't need it.
2. Rebuilding the cylinder heads is expensive. Check prices, sometimes you can get commercially rebuilt or even new aluminum heads for about the same price or less.
3. Install a double roller "straight up" timing chain. It is worth it.
4. Replace the water pump, oil pump and pan as needed.
5. At this stage it will also be a great idea to redue the short block. Have the block rebored the minimum and get a kit including pistons, rings and bearings from Summit or whoever. Sometimes you can get everything in one shot (pumps, heads, etc) when doing this.
6. Use a shop manuel and put it together yourself and save a ton of money. This way you will know it was done right.
I'm pretty tight with money but since I've done a bunch of heads myself and know some of the problems with these early heads I probably would bite the bullet and buy the Edelbrock heads for this motor.
If it is a 74 and original and you plan to keep it:
1. Get rid of the extra oil filter, you don't need it.
2. Rebuilding the cylinder heads is expensive. Check prices, sometimes you can get commercially rebuilt or even new aluminum heads for about the same price or less.
3. Install a double roller "straight up" timing chain. It is worth it.
4. Replace the water pump, oil pump and pan as needed.
5. At this stage it will also be a great idea to redue the short block. Have the block rebored the minimum and get a kit including pistons, rings and bearings from Summit or whoever. Sometimes you can get everything in one shot (pumps, heads, etc) when doing this.
6. Use a shop manuel and put it together yourself and save a ton of money. This way you will know it was done right.
I'm pretty tight with money but since I've done a bunch of heads myself and know some of the problems with these early heads I probably would bite the bullet and buy the Edelbrock heads for this motor.
Posting Guru
Joined: May 2004
Posts: 2,223
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From: Billings Montana
If I were you, I'd get some prices from local machine shops about doing some block work. I just had the 460 rebuilt in my 86 F-250 and it was pretty painless. With machine work, block bored over .30, new valve guides, etc., and reassembly of the short block, installation of the Crane camshaft and pre-71 timing set, it set me back only $1430 with a one year warranty. You might be able to find a good deal yourself and as everyone has said, it makes sense as long as the engines already gonna be out.
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Senior User
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From: Cedar Rapids, IA
Thanks for the replys. The wife put me on a budget with this, so I'm going to be limited on how much of a rebuild I can do on this. I think rebuilding the heads or buying new ones is probably out, so I may only be able to replace the valve seals. Since the stock exhaust manifolds are cracked, I also planned on getting headers, which all digs into the budget.
So is there any physical difference with a pre 71 timing chain set? Do you install it any differently than you would the original stock version?
Also, what should I do with the locations where the additional oil filter connected? Do I just plug these somehow?
Thanks again
So is there any physical difference with a pre 71 timing chain set? Do you install it any differently than you would the original stock version?
Also, what should I do with the locations where the additional oil filter connected? Do I just plug these somehow?
Thanks again
Fleet Mechanic
Joined: Aug 2004
Posts: 1,276
Likes: 7
From: NE Tennessee
Is there a Tee fitting at the manifold where that second filter plugs in? At the back of the manifold the oil pressure guage is usually plugged in there. If this is the case then just take out the Tee fitting and install a regular pressure guage fitting from a junk yard motor.
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If you are doing a rebore I would check with the Machine Shop and ask if they could recommend the best after market piston that they prefer and have had the best results with. I have heard of two rebuilds that have resulted in vibrations due to pistons being out of weight. Perhaps just bad luck but the 460 has big pistons. Just a thought.
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From: MI
Originally Posted by cjf5150
Anyone with any thoughts on what else I need to check or replace while I have the engine out of the truck? Also, anyone have any ideas on what the second oil filter assembly on my truck is for?
Thanks
Thanks
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