camshaft wont fit

does any one has one of these new tool u made id love to see it or im going to have to take back to machine chop

Just hone the bearing using a scotchbrite pad fixture, take the cam plug out and hone the bearing fit the back in when it slides in and it's free put the cam plug back in and be done...
Every 9 of 10 mopar blocks has this issue, it's the poor machining practices they had, not a cocked bearing... If you checked the cam bores you'll find 9 out of 10 blocks are all to tight...and if you further check you'll find lifter bores are not right either

Im gonna tell you something else also, have you taken out the rear plug and just tried to fit the cam and know its that bearing....HOW do you know its the LAST bearing and not 1 of the others ??? You really have no idea which bearing it is yet ? YOU'RE assuming it's the last bearing because the cam slid thru all the others.....the bearings go in to a particular bore and the cam's journals are set to each bearing bore position.

This is a every block situation.

Cranky....Perfectly explained !!!!!!!!:icon_salut:

i took engine back to machine shop they said the tolerances were to tight and will have to grind the cam down a to make it fit they said grinding the bearings would not work on this cam because the cam is at the high side of the tolerances and said its not just mopar or 440s they all have this pending on engine to engine i told them i prefer not to grind the cam dowm they said in this case the would have to the machine shop i use is wone who specifys in race engines and run across thiss all the time even in chevys and fords

Supershafts said:

Lol at the reasons given for this ALL TOO COMMON ISSUE... If i put together 20 bb's this week, 19 will need a cam bearing modified.

The bearing is not cocked, the bearing is just being squeezed more from the inconsistent machining of the cam bores, JUST LIKE the lifter bores all not on the same angle.

You need to hone the bearing that has the problem, or you can cut the cam journal after you bore gauge that bearing and have a crank grinder... SO you'll have to very carefully hone the bearing like i do.

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19 out of 20 blocks needed a cam bearing modified? Wow. What are you using for your cam bearing tool and do you check the bearing bores for correct size? A buddy of mine builds a lot of engines too and also has had problems with cam bearings. IIRC, he has the Lisle universal CBT so I asked him if he wanted to try the tool I have and he did and after checking the bores to make sure they were on size and reinstalling them, it was fine. Neither one of us has had a cam bearing problem since.

I wish you were in Illinois Cranky

Cranky said:

19 out of 20 blocks needed a cam bearing modified? Wow. What are you using for your cam bearing tool and do you check the bearing bores for correct size? A buddy of mine builds a lot of engines too and also has had problems with cam bearings. IIRC, he has the Lisle universal CBT so I asked him if he wanted to try the tool I have and he did and after checking the bores to make sure they were on size and reinstalling them, it was fine. Neither one of us has had a cam bearing problem since.

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Are you really trying to tell me, or even kinda say or blame the tool, that it's cocking the bearing and its my tool ??

I use the same Lisle 18000 that i have and do use on the countless BBC, SBC, fords, ls's, poncho's, buick's, caddy's, roller cam bearing motors, all the aftermarket blocks cast and aluminum and every motor you can think of beyond that and in-between....BUT none, not NONE of them have the bs machining that the mopars do, and im the most mopar true person you'll ever find.
You start checking the cam bores and lifter bores and you'll find something you never knew, and make more power when you correct all the bs machining they pulled off from cam bearing bores to lifter angles and even cyl bores
I have put more cam bearings in than probably 6 people together on this board have changed there underwear in there lifetime to beyond age 50..... There is NO DOUBT the cam bores, lifter bores are poorly machined, it is so common that this is how i can tell who really builds mopars and who just talks about it.

Your machinist friend checked the bores and he seen what ??? Every single bore is tight, some are .0005 and some are as much as .003 and EVERYTHING between that is also not within spec.
EVERY single block will have one cam bore that IS NOT IN SPEC, and 19 of 20 will have more than 1 cam bore, start checking them and see. So if he really checked which i believe not because i can find many more machinists that will agree with me than not agree with me on this true fact of EVERY block.

Now i have installed more cam bearings with the same tool and oddly it is always the mopars with the issues, and it is MOST DEFINITELY NOT the cam tool or cocked cam bearing,,,,,if you cock a cam bearing IT WILL SHAVE itself and become JUNK and not be able to be used, and you will see evidence of the bearing installed incorrectly if it was cocked or started cocked...

Out of more than i can count, if i count the all the GM's that had a issue and the fords and, wait i'll go one better even all the gm brands, fords, merlin, dart, indy, world blocks and every other factory and aftermarket block made together STILL wouldn't compete with the number of mopar blocks that all have a issue...

Every mopar block needs the cam bearings modified to a degree or you machine the bores and lifter bores.
Just like this persons will, however he still doesn't even know which cam bearing it is thats tight since they are all different sizes and he is assuming it's the last journal since it slid past the rest.... He most likely will have more than one, IF, IF he even knows what he is feeling for..

The factories when they build things have access to all kinds of bearing dimensions, rather than send it to be re-machined right they have bearings in all different degrees of dimensions at there disposal to make the right clearance, the aftermarket is machined to spec, and when you have a issue you check and see, oh **** another wrong block... now i can feel which bearing is off just by how it goes in... i don't even have to put in the bearing and check it on the cam , and then the next bearing and re install the cam and check that...

Trust me it's the block.

.

Lighten up Francis

I guess what I got out of that was Supershafts is doing it wrong

Also it was good to see some quality RRR .. miss you brother even if you are interpersonal communication skilz challenged

tallhair said:

Lighten up Francis

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Im fine, I gave you the detail, reasoning and knowledge you do as you will with now finally having the right explanation

In my experience cam bearing clearances are too loose and the bearings you get now are probably on the loose side to deal with a cam bore misalignment. I'll agree that the cam bore can be off and the only way to properly fix it is to align bore or hone.