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Old 04-01-2022, 03:02 PM
66sprint6 66sprint6 is offline
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Default Threads on the end of a pontiac Camshaft

I've been researching the camshaft removal tools that thread into the nose of the camshaft to help with installation. They're not that expensive, but the shipping is a killer. I'm thinking that I can get a long bolt or threaded rod to do the job for way cheaper. I just need to know the size and thread pitch of the receiving end of the cam. Anyone?

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Old 04-01-2022, 03:31 PM
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1/2"-20 Fine thread. https://www.jegs.com/i/ARP/070/190-1001/10002/-1

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Old 04-01-2022, 03:46 PM
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The cheapest and many times best Cam install or removal tool is a another person to support the end of it.

First remove the gear, then remove the thrust plate and then put the gear back on with the bolt only finger tight.

Having the gear on the nose gives you at least 60 to 70% more control!

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Old 04-01-2022, 04:35 PM
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Check the hold down bolt for your spare tire in the trunk, it may be the right size.

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Old 04-01-2022, 05:02 PM
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Nah, if anything that’s 3/8”, 1/2” is like a head or main cap bolt.

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Old 04-01-2022, 05:14 PM
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Another choice would be a rear shock bolt...........
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Old 04-01-2022, 05:16 PM
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no, it is 1/2-20 as stated. I have a bolt that size welded to a 2 foot stick of tubing.

Other end is 14mm-1.5 for LT cams.

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Old 04-02-2022, 02:46 PM
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Whenever I assemble an engine I start with the cam. I stand the block up on end and feed the cam in straight down. Easy Peasy. I find it better to get the cam in and turning free before I load the crank, etc, in the block. Billk

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Old 04-02-2022, 03:24 PM
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Yes. And if there are issues with the cam tunnel best to find out before the crank and friends are installed.

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Old 04-02-2022, 07:57 PM
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Quote:
Originally Posted by 66sprint6 View Post
I've been researching the camshaft removal tools that thread into the nose of the camshaft to help with installation. They're not that expensive, but the shipping is a killer. I'm thinking that I can get a long bolt or threaded rod to do the job for way cheaper. I just need to know the size and thread pitch of the receiving end of the cam. Anyone?
You working on your "purchased" engine???

Have any good fortune with exhaust manifolds, yet?

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Old 04-03-2022, 01:48 AM
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Quote:
Originally Posted by flat-bill View Post
Whenever I assemble an engine I start with the cam. I stand the block up on end and feed the cam in straight down. Easy Peasy. I find it better to get the cam in and turning free before I load the crank, etc, in the block. Billk
I put cam in first. Block on stand upside down guide the cam in is the way my uncle taught me.

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Old 04-04-2022, 06:14 PM
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Quote:
Originally Posted by 77 TRASHCAN View Post
You working on your "purchased" engine???

Have any good fortune with exhaust manifolds, yet?
I did pick up some RAIV manifolds locally for the Round Port motor.. Not cheap the guy knew what he had. We'll have to see if we can make them work in a '67. I'm in no rush. Frankly, I've been eyeing a few '68's and '69's lately that need some love and an engine.

But this cam is for the 400 that's in the LeMans currently. It's a '74 400 and wooo it's a dog. It's got great even compression across the cylinders and seems solid but it's got no power. So I'm getting this Summit 2800 camshaft. Very tame with the 204/214@ .050, 112 LS. But an improvement I hope and I need the vacuum to run Power brakes, A/C and Cruise.

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Old 04-04-2022, 07:12 PM
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Quote:
Originally Posted by Drag Star Le Mans View Post
I put cam in first. Block on stand upside down guide the cam in is the way my uncle taught me.
Upside down or on its end? I don’t see how upside down is any different than right side up.

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Old 04-04-2022, 07:25 PM
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In other words up side down in the engine stand with the open crank case facing up/ you and the crank out.
If your putting the cam in on your own you have much more control.

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Old 04-04-2022, 09:55 PM
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Ok, that make sense with the crank out and upside down you don’t have to deal with the lifter bores.

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Old 04-05-2022, 06:35 AM
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The cam is the FIRST part installed during the engine build. Crank is next, then the timing set and #1 rod/piston to check the ICL or intake open point @ .050". Hell of a lot easier to turn the engine and make adjustments only dragging one piston and rod around in there.

Plus with the cam in first nothing is in the way from the underside so you can help it onto the next journal if/as needed.....and NOTHING sucks worse than getting the spinning assembly in place, installing the cam, then finding out you have a cam bearing alignment issue and it has to come back out, the spinning assembly back out, and cam bearings attended to or replaced..........FWIW......

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Old 04-06-2022, 12:48 PM
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What about switching the cam out on an existing engine?

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Old 04-06-2022, 06:43 PM
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What heads are on the 400?
Seemed like you heard the round port engine run?
If Im remembering... that round port engine has a fairly radical cam in it. I’m guessing your 400 is a low compression engine....a hot cam in a low compression engine is a recipe for disaster....

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Old 04-06-2022, 07:10 PM
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Yea, so i was wondering why degreeing thecam was tought this go-around: all 8 slugs dragging the torque up. Shoulda cammed and just done CYL 1.

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