460 issue
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
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From: Near St. Joseph,MO
460 issue
I'm posting here and not in the 460 section because I never get any responses there.
When I install my harmonic bal and pulley, it makes the belt grooves off about 1/4". It looks like the crank pulley is sitting out too far, but I've had it back off 3 times now and there is no way to get it back further. The spacer between the timing gear and balancer is in as far as it will go, balancer is against it. What am I missing? I spaced out the water pump pulley to match but now installing the alt I've run into the same issue and I'm sure I will again with the power steering pump. Any ideas?
When I install my harmonic bal and pulley, it makes the belt grooves off about 1/4". It looks like the crank pulley is sitting out too far, but I've had it back off 3 times now and there is no way to get it back further. The spacer between the timing gear and balancer is in as far as it will go, balancer is against it. What am I missing? I spaced out the water pump pulley to match but now installing the alt I've run into the same issue and I'm sure I will again with the power steering pump. Any ideas?
Senior User
Joined: Sep 2013
Posts: 329
Likes: 4
From: Deer park, Wa.
Brian, the correct length for your spacer is 2.750". There is a longer one at 3.00". It may be for an FE but I think it may go on a 460. I don't know for sure. You have a great build going..... good luck with it!!
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
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From: Near St. Joseph,MO
Thanks for the help. My spacer measures 2.75 so it's right. I put it all back together and spaced my alt bracket out 1/4". Now the water pump and alt line up, gonna have to fab up a p/s pump bracket so I guess I'll just factor that 1/4" in.
Thanks, it sure is taking me forever to finish, but I have a goal of driving it to Indy in September. That's helping my burnout motivation lately.
Thanks, it sure is taking me forever to finish, but I have a goal of driving it to Indy in September. That's helping my burnout motivation lately.
Laughing Gas
Joined: Dec 2007
Posts: 796
Likes: 1
From: Minnesota
Looks like you got it. I know I have seen many different sizes of crankshaft pulleys for the 460's and 429s over the years. Of course for different vehicles. I had to do some spacing on mine in my 75 too.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,247
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From: S/W Missouri, Polk county
Brian is there possibly of a difference in the harmonic balancer that is used for an internally or externally balance 460? Are you mix matching parts? Just a guess in the dark.
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
Likes: 5
From: Near St. Joseph,MO
Tip of crank sits about 1/8-1/4" inside the face of the balancer. I've tried everything I can think of to move it in further but no luck.
I have 2 460s, one internal and one external. Both have the same balancer as far as I can tell (I tried both to be sure that wouldn't change it). Both have different crank pulleys (tried each and got the one that was closest, still off though). I've ruled out it being the wrong parts. Funny thing though is that both 460s were complete and running before I took them apart. Wish I knew if the issue was there on the internal balanced engine before I took it apart.
I have 2 460s, one internal and one external. Both have the same balancer as far as I can tell (I tried both to be sure that wouldn't change it). Both have different crank pulleys (tried each and got the one that was closest, still off though). I've ruled out it being the wrong parts. Funny thing though is that both 460s were complete and running before I took them apart. Wish I knew if the issue was there on the internal balanced engine before I took it apart.
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More Turbo
Joined: Dec 2013
Posts: 647
Likes: 10
From: SOUTHBURY CT
.If you pull the balancer of again measure the pulley by sticking a tape measure through the hole. then measure the shaft distance from the spacer and compare with the 1/8 or 1/4 inch thats left and you will know if it is on all the way.
the crank is about right compared to my for 460. you sure you have the right brackets for the PS pump and alt ? post some pics if you can.
the crank is about right compared to my for 460. you sure you have the right brackets for the PS pump and alt ? post some pics if you can.
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More Turbo
Joined: Dec 2013
Posts: 647
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From: SOUTHBURY CT
The balancer and the water pump look ok. The top bracket on the alt is different than mine.
But you could shim with washers or bushing to line it up. I would say your balancer is ok ! But im not a pro .
But you could shim with washers or bushing to line it up. I would say your balancer is ok ! But im not a pro .
Fleet Mechanic
Joined: Nov 2009
Posts: 1,398
Likes: 6
When I went to a 1 wire alternator, I added spacers to the alternator to utilize both outer pulleys, allowing the use of a wider belt and easier change out. I do like the bracket you are using, though as it allows the alternator to sit higher for ease of maintenance. It can be a drag to always lay down to tighten the belt.
Last edited by 84espy; Jul 14, 2015 at 10:57 AM. Reason: More info
Cargo Master
Joined: Dec 2008
Posts: 3,221
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From: SW PA
you shouldn't have to space out anything if it were running before without kicking belts.
for sure the crank and water pump pulleys should line up very close without any spacing needed...the accessories should also be close enough when using OEM bracketry designed to work together.
Before you continue to space stuff out, make sure the pulley's are correctly matched and installed correctly. (can you see the fomoco stamp in the crank pulley pointing toward the rad or pointing toward the engine?)
for sure the crank and water pump pulleys should line up very close without any spacing needed...the accessories should also be close enough when using OEM bracketry designed to work together.
Before you continue to space stuff out, make sure the pulley's are correctly matched and installed correctly. (can you see the fomoco stamp in the crank pulley pointing toward the rad or pointing toward the engine?)
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Fleet Mechanic
Joined: Feb 2010
Posts: 1,742
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From: Near St. Joseph,MO
I can't give more info on that alt bracket, it was on the truck when I got it. All I know is it bolts right up and works.
All pulleys are on correctly and I've compared it all to my other engine and they both end up the same. Maybe it was off before and I just never noticed.
All pulleys are on correctly and I've compared it all to my other engine and they both end up the same. Maybe it was off before and I just never noticed.
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