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Re: R block cam Journal question [Re: tubtar] #1782220
03/19/15 09:57 AM
03/19/15 09:57 AM
Joined: Apr 2007
Posts: 1,390
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RAY1969CARS Offline OP
pro stock
RAY1969CARS  Offline OP
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Quote:

Quote:

Quote:

48 degree babbit blocks are not stepped journals ........ they take their own bearing sets and are all the same diameter.
http://www.jegs.com/i/Mopar-Performance/312/P4876372/10002/-1?parentProductId=1903872

I am pretty sure the 59 degree blocks use the stepped bearings like the stock blocks.




That's not correct. The early48 deg "r" blocks and "r1a"blocks used stepped journals like a 59 block but with 48 degree lobe spacing.
I have one and it uses std small block cam bearings.
Call bullet or midway cams.




Why does this not surprise me ?
Add that to the which oil pan and which crankshaft journal questions then.
I am pretty sure that the MoPar UGL cams for the babbit blocks are all gone , but cores can be sourced elsewhere.
But like everything else with these motors , bring your wallet.




It Ain't no Chevy lol

Last edited by RAY1969CARS; 03/19/15 09:58 AM.
Re: R block cam Journal question [Re: RAY1969CARS] #1782221
03/19/15 11:42 AM
03/19/15 11:42 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
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Joined: Jun 2003
Posts: 52,972
Romeo MI
I have 1 more 50mm cam(UGL) for the 48*.. I was hoping
that it was a babbit one but it isnt... some where I
got rid of the one I had

Re: R block cam Journal question [Re: MR_P_BODY] #1782222
03/19/15 11:46 AM
03/19/15 11:46 AM
Joined: May 2003
Posts: 13,182
aZLiViN
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J_BODY Offline
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aZLiViN
Our R3 project stalled for about 3 months last year as we couldn't find a core..... my R3 now has BBC cam bearings

Re: R block cam Journal question [Re: J_BODY] #1782223
03/19/15 11:51 AM
03/19/15 11:51 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Posts: 52,972
Romeo MI
Quote:

Our R3 project stalled for about 3 months last year as we couldn't find a core..... my R3 now has BBC cam bearings




What journal.. babbit or 50

Re: R block cam Journal question [Re: MR_P_BODY] #1782224
03/19/15 11:56 AM
03/19/15 11:56 AM
Joined: May 2003
Posts: 13,182
aZLiViN
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J_BODY Offline
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aZLiViN
was a babbit deal.... I "think" there are cores out there again, but at the time nobody had anything.

Re: R block cam Journal question [Re: J_BODY] #1782225
03/19/15 12:53 PM
03/19/15 12:53 PM
Joined: Jun 2005
Posts: 2,776
Ontario Canada
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MattW Offline
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Posts: 2,776
Ontario Canada
And people think a G3 is complicated!

Re: R block cam Journal question [Re: MattW] #1782226
03/19/15 01:21 PM
03/19/15 01:21 PM
Joined: Apr 2007
Posts: 1,390
CA.
RAY1969CARS Offline OP
pro stock
RAY1969CARS  Offline OP
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Joined: Apr 2007
Posts: 1,390
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Is it the 50 mm needle bearing a lot thicker than a regular bearing ? I don't know off hand If it is couldn't I just bore out the cam tunnel seems to me that the 50mm care are easier to come by my experience with the 1st R block being so old and they r3 a lot newer. If anybody's done is what would be the price on doing it Machine whys is it a real big deal ???

Re: R block cam Journal question [Re: MattW] #1782227
03/19/15 01:22 PM
03/19/15 01:22 PM
Joined: Oct 2005
Posts: 739
Florida
4
408Dust Offline
super stock
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Posts: 739
Florida
Call LSM 248-674-4967 I had a 54mm one made for me in 3 weeks this January. Chris Padgett at comp may be able to help also.

Re: R block cam Journal question [Re: RAY1969CARS] #1782228
03/19/15 01:38 PM
03/19/15 01:38 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Posts: 52,972
Romeo MI
Quote:

Is it the 50 mm needle bearing a lot thicker than a regular bearing ? I don't know off hand If it is couldn't I just bore out the cam tunnel seems to me that the 50mm care are easier to come by my experience with the 1st R block being so old and they r3 a lot newer. If anybody's done is what would be the price on doing it Machine whys is it a real big deal ???




On my new R3 block it came with the 50m cam tunnel
but I still had to have it machined to line it up
and have the bearings fit.. the tunnel was a bit
undersize.. I had to have the mains line honed also..
it was bad

Re: R block cam Journal question [Re: MR_P_BODY] #1782229
03/19/15 04:31 PM
03/19/15 04:31 PM
Joined: Apr 2007
Posts: 1,390
CA.
RAY1969CARS Offline OP
pro stock
RAY1969CARS  Offline OP
pro stock

Joined: Apr 2007
Posts: 1,390
CA.
Quote:

Quote:

Is it the 50 mm needle bearing a lot thicker than a regular bearing ? I don't know off hand If it is couldn't I just bore out the cam tunnel seems to me that the 50mm care are easier to come by my experience with the 1st R block being so old and they r3 a lot newer. If anybody's done is what would be the price on doing it Machine whys is it a real big deal ???




On my new R3 block it came with the 50m cam tunnel
but I still had to have it machined to line it up
and have the bearings fit.. the tunnel was a bit
undersize.. I had to have the mains line honed also..
it was bad



.


I guess this is half the fun lol

Re: R block cam Journal question [Re: RAY1969CARS] #1782230
03/19/15 04:50 PM
03/19/15 04:50 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Quote:

Quote:

Is it the 50 mm needle bearing a lot thicker than a regular bearing ? I don't know off hand If it is couldn't I just bore out the cam tunnel seems to me that the 50mm care are easier to come by my experience with the 1st R block being so old and they r3 a lot newer. If anybody's done is what would be the price on doing it Machine whys is it a real big deal ???




On my new R3 block it came with the 50m cam tunnel
but I still had to have it machined to line it up
and have the bearings fit.. the tunnel was a bit
undersize.. I had to have the mains line honed also..
it was bad



.


I guess this is half the fun lol




If your gonna run a big lift cam you would be far
better to have the cam tunnel bored to 50mm specs..
that way the cam wont flex like the stock type core
being that you have to grind the base of the cam to
get the lift... but then you would want good rockers
also.. but you said you were going with TD if I recall
and if you go that way I would go push rod oiling
for the rockers.... nothing easy on these things
EDIT
Let me take a look around.. I think I have a set of
50mm bearing... if I have them you can have them
but they would need a washing

Last edited by MR_P_BODY; 03/19/15 04:53 PM.
Re: R block cam Journal question [Re: RAY1969CARS] #1782231
03/19/15 07:06 PM
03/19/15 07:06 PM
Joined: Oct 2010
Posts: 2,393
Ambridge, Pa.
R
rickraw Offline
top fuel
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Joined: Oct 2010
Posts: 2,393
Ambridge, Pa.
Indy ripped me for 750 to bore cam tunnel for 50mm roller bearings & another 250 to drill 16 holes in bores for pushrods oiling, I couldn't find a jig to do it myself. Now I know how women feel when they get rapped.

Re: R block cam Journal question [Re: rickraw] #1782232
03/19/15 07:14 PM
03/19/15 07:14 PM
Joined: Jul 2009
Posts: 413
Norway (old world)
Oyvind Mopar Offline
mopar
Oyvind Mopar  Offline
mopar

Joined: Jul 2009
Posts: 413
Norway (old world)
I think I have a few 48* roller cams, and one or two are stepped. I cannot use them in my block (need 50mm roller). I can measure to see, maybe we can swap? Please tell me what measurements the cambearings should have, and I will check through!

Re: R block cam Journal question [Re: MR_P_BODY] #1782233
03/19/15 10:54 PM
03/19/15 10:54 PM
Joined: Apr 2007
Posts: 1,390
CA.
RAY1969CARS Offline OP
pro stock
RAY1969CARS  Offline OP
pro stock

Joined: Apr 2007
Posts: 1,390
CA.
Quote:

Quote:

Quote:

Quote:

Is it the 50 mm needle bearing a lot thicker than a regular bearing ? I don't know off hand If it is couldn't I just bore out the cam tunnel seems to me that the 50mm care are easier to come by my experience with the 1st R block being so old and they r3 a lot newer. If anybody's done is what would be the price on doing it Machine whys is it a real big deal ???




On my new R3 block it came with the 50m cam tunnel
but I still had to have it machined to line it up
and have the bearings fit.. the tunnel was a bit
undersize.. I had to have the mains line honed also..
it was bad



.


I guess this is half the fun lol




If your gonna run a big lift cam you would be far
better to have the cam tunnel bored to 50mm specs..
that way the cam wont flex like the stock type core
being that you have to grind the base of the cam to
get the lift... but then you would want good rockers
also.. but you said you were going with TD if I recall
and if you go that way I would go push rod oiling
for the rockers.... nothing easy on these things
EDIT
Let me take a look around.. I think I have a set of
50mm bearing... if I have them you can have them
but they would need a washing







Talk to a couple shops QMP. Bob Lemback I guess it can be done boring to a 50mm one more call to Brian at Imm that's the shop that will be doing all the machine work and the assembly and put it on the pump still need to know the pros and cons don't want to back myself into a corner to go a certain way with the motor oiling etc. etc.

Re: R block cam Journal question [Re: RAY1969CARS] #1782234
03/19/15 11:05 PM
03/19/15 11:05 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Posts: 52,972
Romeo MI
Talk to a couple shops QMP. Bob Lemback I guess it can be done boring to a 50mm one more call to Brian at Imm that's the shop that will be doing all the machine work and the assembly and put it on the pump still need to know the pros and cons don't want to back myself into a corner to go a certain way with the motor oiling etc. etc.




This is JMO but I would go 50mm with push rod oiling
with multi shaft rockers such as TD.. this was the
way I went and it worked well... I was turning 8200
rpm all the time but I did go as high as 9600 looking
for more power.. this was on my 405ci W-9 but I
needed another .150 lift on the cam which would have
made 750 hp... but I wimped on the cam... talk with
Brian and see what he thinks

Re: R block cam Journal question [Re: MR_P_BODY] #1782235
03/20/15 12:12 AM
03/20/15 12:12 AM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
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Posts: 3,978
Hilltown Pa
I would go with a Babbitt cam, the factory 2" size(1.998) and predator cams has cores. A Babbitt bearing is much more reasonable then rollers and cores are cheap also.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: R block cam Journal question [Re: 1967dartgt] #1782236
03/20/15 01:23 AM
03/20/15 01:23 AM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline
master
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Posts: 3,036
bean town ....Ca
You live close to the best shop in the west.stop banging your head on the key board and get it done . And get it to the track the more money you try to save the more it cost you. This is what I found out the hard way on my w8 dill


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: R block cam Journal question [Re: WHITEDART] #1782237
03/20/15 10:20 AM
03/20/15 10:20 AM
Joined: Jan 2009
Posts: 1,044
Victoria, Australia
Ian Offline
super stock
Ian  Offline
super stock

Joined: Jan 2009
Posts: 1,044
Victoria, Australia
my 48 r block has stepped bearings ,my new cam is not stepped seems to fit in the front nice the new cam is 21 = 1.9985 2" SB Mopar "R" Babbit


1.37 60 ft [email]6.0@113[/email] [email]9.57@141[/email] 408 glide 3550lbs
new video http://www.youtube.com/watch?feature=player_embedded&v=Xvq3ZObywQE
Re: R block cam Journal question [Re: Ian] #1782238
03/20/15 07:45 PM
03/20/15 07:45 PM
Joined: Jan 2003
Posts: 426
Cairns Queensland Australia. T...
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vc360 Offline
mopar
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Cairns Queensland Australia. T...

Last edited by vc360; 03/20/15 07:49 PM.
Re: R block cam Journal question [Re: vc360] #1782239
03/20/15 10:26 PM
03/20/15 10:26 PM
Joined: Apr 2007
Posts: 1,390
CA.
RAY1969CARS Offline OP
pro stock
RAY1969CARS  Offline OP
pro stock

Joined: Apr 2007
Posts: 1,390
CA.
Do the 50 mm roller bearing cams have holes in the journals for oil as well as A grove cut them ???

Last edited by RAY1969CARS; 03/20/15 11:44 PM.
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