Desmogging the 73-86 460!!! - Page 3 - 460 Ford Forum
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post #31 of 43 (permalink) Old 03-11-2016, 05:05 PM
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so I have a 77 Lincoln 460. Getting ready to install the new timing gear set. Which one do I want to go with? The Square, the O, or the triangle? Square tells me that it is the retard 4 dgrees, O is stock, and the triangle is 4 degrees advanced.
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post #32 of 43 (permalink) Old 03-30-2016, 04:31 PM
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Quote:
Originally Posted by bigblok86ranger View Post
Gonna start a sticky with tips and tricks to maximising power in the 73-86 460.

1. Timing set change; 72 and up have an 8* retard in the timing set stock. Install a 69-71 timing chain set (double roller is also a good upgrade).

2. Carb change; throw that 650 in the scrap pile and install a properly tuned list# 3310 carb

3. Getting rid of the EGR; (A) If your engine has the air injection tubing remove them and tap and install 1/4" pipe plugs in the heads. (B) On the Holley flanged intake remove the EGR spacer plate between the carb and intake purchase a new EGR to carb gasket and place directly onto the intake (this will be ~1/4" thick gasket) then install a 1" 4hole aluminum spacer then a standard holley gasket then the carb.

4. Tming; (A) replace a points distributor with a Duraspark unit that is recurved with a proper timing curve, (B) Set timing at 12* initial.

5. Both Crane and Harland Sharp offer roller rocker conversions; this is a great addition.

These are the methods I have devoloped over the years and will turn a lazy gas guzzling 460 into a lean tire frying beast with no major work.

Anyone who has other tips and tricks please feel free to share!
In regards to the '69-'71 timing chain set you recommend, does it have to be for a 460, or will the timing chain set from a 429 also work on the '74 460 I'm desmogging? Since you're specifying specific years I'm guessing buying a brand new set for any 460 won't do the trick, right?

Last edited by johnejo; 03-30-2016 at 04:50 PM. Reason: Wanted to seek clarification beyond what I orginally asked.
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post #33 of 43 (permalink) Old 03-30-2016, 05:38 PM Thread Starter
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Quote:
Originally Posted by johnejo View Post
In regards to the '69-'71 timing chain set you recommend, does it have to be for a 460, or will the timing chain set from a 429 also work on the '74 460 I'm desmogging? Since you're specifying specific years I'm guessing buying a brand new set for any 460 won't do the trick, right?
69-71 429 or 460 timing set will work.

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post #34 of 43 (permalink) Old 10-22-2016, 01:39 AM
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I just picked up a 1972 Lincoln Continental with the 460ci 385 and would like to know how much of this thread is applicable to my engine. The subject says 73-86, but the 1972 model year is mentioned several times in the body.
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post #35 of 43 (permalink) Old 11-27-2016, 09:56 AM
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It is applicable to the 72 model year as well.

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post #36 of 43 (permalink) Old 01-22-2017, 11:22 PM
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I just aquired a 73 Lincoln Continental in cherry cond. Now i.m ready to desmog this baby. This is the plan.

69-71 timing chain set at o, Aluminum Intake - EGR valve Holley 650 duraspark ignition system and Flowmaster dual exhaust any suggestion tips or ideas this is my first one I'm welcome for suggestions
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post #37 of 43 (permalink) Old 01-23-2017, 12:53 PM
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Quote:
Originally Posted by Sabrelives69 View Post
I just aquired a 73 Lincoln Continental in cherry cond. Now i.m ready to desmog this baby. This is the plan.

69-71 timing chain set at o, Aluminum Intake - EGR valve Holley 650 duraspark ignition system and Flowmaster dual exhaust any suggestion tips or ideas this is my first one I'm welcome for suggestions

You'd do best to post this in engine tech.


88-92 EFI timing set is straight up, double roller and cost effective.
Properly curved duraspark distributor
Performer intake is a good fit here.

Are you in an emissions compliance area?



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post #38 of 43 (permalink) Old 02-15-2017, 01:49 PM
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Quote:
Originally Posted by TXviking View Post
I just picked up a 1972 Lincoln Continental with the 460ci 385 and would like to know how much of this thread is applicable to my engine. The subject says 73-86, but the 1972 model year is mentioned several times in the body.
While this info does apply to the 72 460 if you need to pull the heads for work find a set of D3VE castings to replace the original D2VE castings which were a 1 year only head that are less tolerant to a performance ignition curve than the later or earlier heads.The D3VE heads will give approx.the same compression as the 72 heads while the early C8,C9,and D0VE heads will give a bump in compression to approx. 9 to 1.If the engine is sound and doesn't need work go ahead keep the 72 heads but adjust the ignition curve as necessary,but if you ever need to pull the heads go with the later or earlier heads it will be well worth the minimal additional cost.
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post #39 of 43 (permalink) Old 08-07-2017, 01:49 PM
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Quote:
Originally Posted by fordpulling29 View Post
The 1/4 in tap for the back of the heads is too small for anyone doing this you will need to go to a bigger size
Are referring to blocking the Thermactor (air injection) ports in the back of the cylinder heads?

There are plugs available to block these ports - or I have heard that filling with high-temp RTV also works.
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File Type: jpg Ford 460 head with Thermactor port.jpg (45.8 KB, 48 views)
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Last edited by 4604X4; 08-08-2017 at 12:11 PM.
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post #40 of 43 (permalink) Old 10-30-2017, 01:02 PM
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can someone please help me with de smogging a 1977 lincoln 460 motor am stuck with re routing vacuum lines where does the auto tranny one go and what else do i need to do after blocking thermactor boss holes etc and egr delete. am struggling to understand how to do it.
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post #41 of 43 (permalink) Old 01-05-2018, 07:56 PM
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I had a 1978 Licoln mk v with a 460 and I Desmogged it I was getting 26 mpg hiway
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post #42 of 43 (permalink) Old 02-12-2019, 01:07 PM
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Following advice

Hi I have been following your advice for my 460. I put in an HEI distributor and was wondering if you knew how to work the vacuum lines. I had a dual vacuum points distributor before one line went to the carbs secondary vacuum. For now I have capped off the secondary vac at the carburetor. Should I link those vacuum lines with a T or just leave it as is?
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post #43 of 43 (permalink) Old 02-28-2019, 03:46 PM
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Thanks Jima, The motor has 96k miles. one owner and well taken care of. There is a lot of chatter about timing chains. Do I need/should to do that too?
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