factory retarded cam timing
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Postmaster
Joined: Dec 2002
Posts: 3,594
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From: Southern Oregon USA
factory retarded cam timing
I am rebuilding a 400 from a '79 pickup. In choosing a timing gearset, I would like to get rid of the factory retarded cam timing for something a bit more performance oriented.
If I get a multi keyway gear, will 0 deg be straight up or emissions friendly retarded like original? Or will I want to go with the advance keyway? Is there an earlier timing chain set that would work?
I'm hoping that someone will know the answer so that I don't have to go through the trouble of degreeing the cam.
Thanks,
Jason
If I get a multi keyway gear, will 0 deg be straight up or emissions friendly retarded like original? Or will I want to go with the advance keyway? Is there an earlier timing chain set that would work?
I'm hoping that someone will know the answer so that I don't have to go through the trouble of degreeing the cam.
Thanks,
Jason
Senior User
Joined: Oct 2005
Posts: 271
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From: Gresham Oregon
I got through Portland DEQ with a straight up Cloyes set and a RV cam, 4bbl, headers and cats in my 79 4x4 with a 351m. I was richer at idle than at 2000 rpms, and I think I have some engine issues. If your going to rebuild get the higher compression pistons from TMI, run a small cam like the comp 255deh straight up and use a newer converter and you'd be ok for the smog test. I think Southern Oregon isn't as stringent as the Portand Metro area. DO you need to smog your 77 down there?
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Postmaster
Joined: Dec 2002
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From: Southern Oregon USA
I'm not worried about smog testing. None doing here. 
I guess the question I'm trying to ask is that if I buy a performance timing set, will it be retarded like the OE replacement?
Jason
I guess the question I'm trying to ask is that if I buy a performance timing set, will it be retarded like the OE replacement?
Jason
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Postmaster
Joined: Dec 2002
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From: Southern Oregon USA
Trending Topics
Senior User
Joined: Oct 2005
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From: Gresham Oregon
Don't get a cheap or factory chain. They stretch easy and then your cam to crank is out of time. Get a Cloys or Rollmaster
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is it a difference you could feel in the seat of ur pants?
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I put one in a '72 Galaxie 400 thats now my grandsons and my 81 351M it sure seemed to make a difference.
I was always told the '72 & later timing chains (and this goes fro the 429/460s) had the cam retarded either 4 or 8 degrees.
Can anyone confirm what I was told ?
I was always told the '72 & later timing chains (and this goes fro the 429/460s) had the cam retarded either 4 or 8 degrees.
Can anyone confirm what I was told ?
Thread Starter
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Postmaster
Joined: Dec 2002
Posts: 3,594
Likes: 2
From: Southern Oregon USA
I put one in a '72 Galaxie 400 thats now my grandsons and my 81 351M it sure seemed to make a difference.
I was always told the '72 & later timing chains (and this goes fro the 429/460s) had the cam retarded either 4 or 8 degrees.
Can anyone confirm what I was told ?
I was always told the '72 & later timing chains (and this goes fro the 429/460s) had the cam retarded either 4 or 8 degrees.
Can anyone confirm what I was told ?
Jason
Freshman User
Joined: Apr 2009
Posts: 33
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i am really interested in doing this to my 400. I just bought a F-350 Wrecker truck. I don't want to do anything really wild just perk it up a little. The truck is really comming along. I found several vacum leaks a melted distributor cap and haven't fixed the carb yet but the accelerator linkage isn't engagint the accellerator pump right off the idle.Could someone please post part numbers and brands for the gears and chain that will eliminate the retarded cam timing. Would also be interested in any pics that have the front covers removed . I have mucho experience in chevy engines but none in Ford.. thanks for any input.
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Postmaster
Joined: Dec 2002
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From: Southern Oregon USA
I compared the factory timing set to the Summit replacement set. There is no difference between them. These pictures have the marks lined up as they are installed.
original gear
Summit replacement gear set
Jason
original gear
Summit replacement gear set
Jason