Pontiac - Race The next Level

          
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Old 05-31-2020, 06:32 AM
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Default Changing multiple cam on dyno

Just wondering if anyone has a good way to get the lifters out of the way during cam changes. Not having to remove intake and valley pan would really speed things up. And time is money when it comes to dyno sessions.

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Old 05-31-2020, 10:23 AM
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Maybe a 8 of those telescoping magnet that fits the pushrod holes? You need 8 of those for sure and four guys holding it up. Good luck

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Old 05-31-2020, 10:27 AM
Mark G Mark G is offline
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impossible Pontiac is not a LS where you can use to long dowels to hold up the lifters .. If it can be done I can't wait to hear how.... Your loaded $$$$$$ just take it apart .. Or magnetic pushrods Build a fixture that sits on the heads .

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Old 05-31-2020, 10:35 AM
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I was thinking about coat hangers, go down through pushrod and hook tie-bars to pull the up.
Just looking for something outside the box.

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Old 05-31-2020, 10:35 AM
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Quote:
Originally Posted by Mark G View Post
impossible Pontiac is not a LS where you can use to long dowels to hold up the lifters .. If it can be done I can't wait to hear how.... Your loaded $$$$$$ just take it apart .. Or magnetic pushrods Build a fixture that sits on the heads .
Very helpful, thanks

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Old 05-31-2020, 10:46 AM
Mark G Mark G is offline
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Not sure what about this .

https://www.amazon.ca/Grabber-Flexib...4SACFNJHT539JK

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Old 05-31-2020, 01:58 PM
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Quote:
Originally Posted by slowbird View Post
I was thinking about coat hangers, go down through pushrod and hook tie-bars to pull the up.
Just looking for something outside the box.
I have done that. IT WORKS! I have done it a few times with a eheaded motor and the crooked valve Pontiac motor. It does work. Your going to find yourself turning the cam constantly as you pull the cam out and reinstall it. I would spin the cam to get the lifter at its highest point and put the coat hanger down the pushrod hole and once I hooked the tie bar would pull the lifter up a hair more.Put your patients hat on and take your time. It is nice once you have the cam installed you don’t have to glue the valley cover back on and the intake is already installed.
Coat hangers cut and looped around the tie bars. And the other end wrapped around the valve spring.
Long skinny needle nose pliers can help. Also a skinny magnet can help,go get surgical my friend!

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Old 05-31-2020, 01:59 PM
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My 1st set of roller lifters could do that.
They had springs on each lifter against the tie bar, when no pushrod pushing it down they would 'pop' up the lifter so the wheel was higher than the cam bore.



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Old 05-31-2020, 07:51 PM
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Quote:
Originally Posted by johnta1 View Post
My 1st set of roller lifters could do that.
They had springs on each lifter against the tie bar, when no pushrod pushing it down they would 'pop' up the lifter so the wheel was higher than the cam bore.


I have used them on small black Chevy’s before. They work great!

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Old 06-01-2020, 04:34 PM
KEN CROCIE KEN CROCIE is offline
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How bout 16 of those telescoping magnets and use clothes pins to hold them up, like we held the lifters up on a Y-Block ford.

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Old 06-01-2020, 07:48 PM
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I wanted to say 16 telescoping magnets but I figured that would cause more money.

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Old 06-01-2020, 08:11 PM
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With the magnets how would you release the lifters? Don't want to accidentally pull the lifters out of the bore.

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Old 06-01-2020, 08:15 PM
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You would probably have to use something to push down on the lifter.

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Old 06-01-2020, 08:45 PM
HoneyHush HoneyHush is offline
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I hate to even put this on here because I did a quick search and found this on a Ford site but it may help you. I hope the pic loads
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Old 06-01-2020, 11:53 PM
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The reason I said 8 magnets so u can stick a pushrod on the other hole to push the lifter down separating the magnet to the lifter.

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Old 06-02-2020, 10:10 AM
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The lifters were horizontal bar lifters.
Found a pic online (chevy though)





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Old 06-02-2020, 09:20 PM
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My concern with using magnets is the possibility of magnetizing a metal piece of the lifter.

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Old 06-05-2020, 05:39 PM
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When is this dyno session taking place?

What do you think Slowbird? Are you going to try to change cams on dyno day?

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Old 06-05-2020, 07:11 PM
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https://www.andersonfordmotorsport.c...r-5-0l-engine/

these are the ones in the picture a few posts up.

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Old 06-05-2020, 09:00 PM
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Quote:
Originally Posted by S/st 54 View Post
When is this dyno session taking place?

What do you think Slowbird? Are you going to try to change cams on dyno day?
Id like to test cams, we'll see.

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