460 timing chain question.

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Mar 20, 2004 | 07:50 PM

Skagit

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460 timing chain question.

I have a 1977 460 that is going in my bronco as soon as the mount get to my door. I was wondering if this motor would benefit from a new timing chain, like a summit roller timing chain? Would it give this motor better performance? would it be worth the 50$? I would have to get new timing cover and water pump gaskets right? Or just use gasket maker? There arent any special tools needed right?

Mar 20, 2004 | 09:20 PM

doccamel

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First get a pre 72 timing set to get the 8 deg. of retardation out of the cam that will help on power. Put on new gaskets for safety sake. Prob. need a good puller.

Mar 20, 2004 | 11:17 PM

Skagit

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to pull the timing gears?

Mar 21, 2004 | 08:26 AM

Ford79

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From: Hampstead, NC

You'll need a puller to remove the balancer and possibly the lower timing gear(from the crank) As mentioned before, get the pre 72 (68-71) timing set. I believe parts stores sell gasket sets just for replacing the timing chain, so those are the only gaskets you will need.

Mar 21, 2004 | 10:26 AM

c_rossman

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From: Cloud USA

Also 88-97 EFI Timing sets are straight up also.

Mar 21, 2004 | 09:05 PM

Skagit

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Thanks for the info guys, I ordered the chain set and new gaskets. I ordered the 68-71 timing set for a 429 because my local parts store couldnt get any for a 460, will have it done tomorrow. Thanks.

Mar 23, 2004 | 03:41 PM

leadmic

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From: Tulare U.S.A.

Hey c_rossman, where did you get your info? I checked the Ford mototsport tech line they said my 97 460 was retarded but Im not sure those guys were 100% on that. I would be interested in finding out for sure.
THX Leadmic

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Mar 23, 2004 | 05:40 PM

leadmic

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From: Tulare U.S.A.

How did you know that it was stright up did you degree the cam? Also what year is your truck ? Was it a double roller chain?
I havent been able to get too many answers about the fuel injected 460 internals thats why all the questions.
THX Leadmic

Mar 23, 2004 | 06:31 PM

#10

c_rossman

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From: Cloud USA

My truck is a 93, It was over a year ago, but I used a protractor to double check the timing. I believe the dowel pin is perpendicular to the mark on the timing gear.It was a double roller chain.The only reason Ford used a retarded timing set is for emissions, And EFI fixed this problem so the put the timing straight up.

Mar 25, 2004 | 09:46 AM

#11

LWJ

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What are the emissions implications?

So my question is - can anyone quantify what this will do to emissions? I would love to perk up my motor but would hate to flunk the emissions test.

I am in Oregon with a non-cat truck. It has an air pump and the other smog spagetti vacuum hoses on it.

Thoughts?

LWJ

Mar 25, 2004 | 07:52 PM

#12

doccamel

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They retarded the cam in order to pass fed emmission standards. May pass may not. I hate smog *****. You may have to lean it out to pass.

Apr 21, 2004 | 09:48 AM

#13

fasthauler

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From: Hesperia, CA

I changed out my timing chain to the pre-72 Fifteen years ago and I have been through seven smog checks with no problems. The emissions always pass, sometimes I get hassled over the plumbing.

Last edited by fasthauler; Apr 21, 2004 at 09:53 AM.

Apr 22, 2004 | 08:44 PM

#14

bassdude

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Joined: Sep 2003

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From: colorado

i just put on a Coyes double roller chain on my 71 motor going into the 76 f-250. it goes on 2 degrees retarded, straight up, or 2 degrees advanced.

Apr 27, 2004 | 10:55 AM

#15

Rifleman7.62

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From: Harrison County, Texas, C

I hate to jump in here and ask something on a thread that's not mine but I was also thinking of having a pre 71 timing chain and possibly a cam in my 86 250 with a 460 in the future. How involved is it to replace? Is it necessary to pull the engine to perform this or just the radiator? Forgive my ignorance, I am still learning