LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Cam dowl change

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Old Mar 20, 2007 | 01:44 PM
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95z28_m6's Avatar
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Angry Cam dowl change

Has anybody ever pulled the dowl pin from the camshaft and installed a new one by themselves? My new le2 cam came with the short pin and my stock cam has the long one. I want to try to just swap these. I dont want to have to take the motor back out. (just got it in) I have already spent way to more money than I should have so a machine shop is not really an option. Thanks.
Old Mar 20, 2007 | 03:48 PM
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Originally Posted by 95z28_m6
Has anybody ever pulled the dowl pin from the camshaft and installed a new one by themselves? My new le2 cam came with the short pin and my stock cam has the long one. I want to try to just swap these. I dont want to have to take the motor back out. (just got it in) I have already spent way to more money than I should have so a machine shop is not really an option. Thanks.
Have you measured the dowel pin length? My last BRE cam came with the perfect length dowel pin while all my other cams came with an overly long dowel pin.
Old Mar 20, 2007 | 03:59 PM
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Best bet is to take it to a machine shop. It can be very stubborn to get out and you can end up damaging the camshaft trying. You'll never be able to do it with the cam in the engine.
Old Mar 20, 2007 | 06:18 PM
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I know two people that have. One pulled it out somewhat, and the other pushed it back in somewhat.
Old Mar 20, 2007 | 07:35 PM
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Originally Posted by shoebox
Best bet is to take it to a machine shop.
Agreed. It should not be expensive for them to take it out.
Old Mar 20, 2007 | 07:57 PM
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Originally Posted by Z95m6
Have you measured the dowel pin length? My last BRE cam came with the perfect length dowel pin while all my other cams came with an overly long dowel pin.

agreed. maybe the pin is shorter but not too short. If it pin is sticking out further than the cam bolts then it should be good.
Karl
Old Mar 20, 2007 | 09:02 PM
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I called about 15 machine shops within a 50 mile range from me, none of them could help me. Then I got lucky and found one that wasnt busy at the time and said to bring it in.
Ended up taking me and him about 20 minutes to get it out, then he said 10$ would work.
Old Mar 20, 2007 | 09:15 PM
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Originally Posted by shoebox
Best bet is to take it to a machine shop. It can be very stubborn to get out and you can end up damaging the camshaft trying. You'll never be able to do it with the cam in the engine.
Unfortunately I had to perform this operation with the cam installed into the engine and was successful. I degreased the dowel pin with brake cleaner, clamped onto the dowel pin with a pair of vice grips, placed a long screw driver through the vice grip "opening" and butted it against the front of the motor using a block of wood, and used a hammer on the other end of the screw driver to tap it out. A slide hammer would probably be a better method. Tapped in a new pin to the proper height. I'll never forget to check the pin length in a new cam again!
Old Mar 20, 2007 | 09:26 PM
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Originally Posted by OBE1 95Z28
Unfortunately I had to perform this operation with the cam installed into the engine and was successful. I degreased the dowel pin with brake cleaner, clamped onto the dowel pin with a pair of vice grips, placed a long screw driver through the vice grip "opening" and butted it against the front of the motor using a block of wood, and used a hammer on the other end of the screw driver to tap it out. A slide hammer would probably be a better method. Tapped in a new pin to the proper height. I'll never forget to check the pin length in a new cam again!
well I got them changed by myself w/o taking the cam out. I pretty much just did this. Thanks alot guys.
Old Mar 20, 2007 | 10:12 PM
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The dowel pin in my stock cam would not come out with any type of force I could put on it (with the cam out of the engine). Apparently, they are not all in so tight.
Old Mar 20, 2007 | 10:15 PM
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You know I just got my LE4 cam, and noticed that the pin was short also. Why is comp doing this if they know there is a longer doweled year model? It makes sense to grind to your specified length. In fact my 503 was longer doweled from comp. I wonder what they are doing?
Old Mar 20, 2007 | 10:18 PM
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Originally Posted by Dave1980
You know I just got my LE4 cam, and noticed that the pin was short also. Why is comp doing this if they know there is a longer doweled year model? It makes sense to grind to your specified length. In fact my 503 was longer doweled from comp. I wonder what they are doing?
That kinda pissed me off 2. Mabey Lloyd dosent specify what year when he orders the cams.
Old Mar 20, 2007 | 10:47 PM
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Comp states (or used to) on their site that checking the length of the dowel pin is the responsibility of the purchaser. Everyone should do this as standard procedure, anyway.
Old Mar 20, 2007 | 10:50 PM
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Can you also grind down the end of the dowel to proper length??
Old Mar 20, 2007 | 10:53 PM
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Originally Posted by buzz12586
Can you also grind down the end of the dowel to proper length??
yes



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