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Re: r block cam
[Re: Ian]
#2006599
02/06/16 10:54 AM
02/06/16 10:54 AM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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I would think cutting the cam down would go threw the hardening on it. Don't know but I would call Bullet, lsm or predator cams.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: r block cam
[Re: Ian]
#2006628
02/06/16 12:07 PM
02/06/16 12:07 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Get the right cam blank... if you have to go with the one you have, have the cam ground down and get it nitrited EDIT after thinking about it... bore the tunnel out and change it to a roller tunnel... the blank you have is it a flat tappet or roller blank.. they are diferent 
Last edited by MR_P_BODY; 02/06/16 12:11 PM.
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Re: r block cam
[Re: rickraw]
#2007174
02/07/16 02:11 AM
02/07/16 02:11 AM
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Joined: Jan 2009
Posts: 1,044
Victoria, Australia
Ian
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 1,044
Victoria, Australia
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Durabond bearing would be fine. I had a 50mm cam ground for around 450. Indy ripped me for 750 to bore the tunnel since I already had a 500mm cam. Been running roller cam bearings for a few yrs now, no problems. are the cam cores the same size for the babbit bearing and the roller bearing
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Re: r block cam
[Re: Ian]
#2007287
02/07/16 12:56 PM
02/07/16 12:56 PM
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Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
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Thinking about picking up a 9.2" deck 48 degree R block. Is there anywhere I could bone up on the cam bore/bearing differences?
Was thinking about doing a short 3.7-ish inch ( for me, lol) stroke turbo motor.
Might not be up for a $500.00 cam core that's gonna be hard to come by...lol
Last edited by Streetwize; 02/07/16 01:10 PM.
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Re: r block cam
[Re: Streetwize]
#2008080
02/08/16 06:36 PM
02/08/16 06:36 PM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Thinking about picking up a 9.2" deck 48 degree R block. Is there anywhere I could bone up on the cam bore/bearing differences?
Was thinking about doing a short 3.7-ish inch ( for me, lol) stroke turbo motor.
Might not be up for a $500.00 cam core that's gonna be hard to come by...lol Then a r block might not be the right choice, as all came out their are designed for NA motors. You would have to run a custom core to get the proper cam for a power adder car. You can make something work like I did, but it won't be close to ideal.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: r block cam
[Re: 1967dartgt]
#2008427
02/09/16 07:41 AM
02/09/16 07:41 AM
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Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
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Bore the tunnel Ian, you will struggle finding 48* cam cores with factory bearing configuration. The babbit journal size is 1.998" or 50.75mm, so be mindful of that. I remember being told that a durabond bearing was available that fit into the 50mm roller bearing bore, but allowed a 55mm core to be used.
Alan Jones
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Re: r block cam
[Re: LA360]
#2008445
02/09/16 10:56 AM
02/09/16 10:56 AM
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Joined: Jan 2009
Posts: 1,044
Victoria, Australia
Ian
OP
super stock
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OP
super stock
Joined: Jan 2009
Posts: 1,044
Victoria, Australia
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Bore the tunnel Ian, you will struggle finding 48* cam cores with factory bearing configuration. The babbit journal size is 1.998" or 50.75mm, so be mindful of that. I remember being told that a durabond bearing was available that fit into the 50mm roller bearing bore, but allowed a 55mm core to be used. i will mate,the cam i have is a 1,998 babbit bearing cam ,which is a better bearing the babbit or durobond and are they the same size as the front bearing on a la block .crankshaft rebuilders are going to bore it ,clive cams said you can turn the jurnells down and the do not need to be heat treated
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Re: r block cam
[Re: Ian]
#2008728
02/09/16 07:04 PM
02/09/16 07:04 PM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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Predator cams has Babbitt ugl cams in stock. It's where I got mine.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: r block cam
[Re: Ian]
#2009075
02/10/16 04:18 AM
02/10/16 04:18 AM
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Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
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Bore the tunnel Ian, you will struggle finding 48* cam cores with factory bearing configuration. The babbit journal size is 1.998" or 50.75mm, so be mindful of that. I remember being told that a durabond bearing was available that fit into the 50mm roller bearing bore, but allowed a 55mm core to be used. i will mate,the cam i have is a 1,998 babbit bearing cam ,which is a better bearing the babbit or durobond and are they the same size as the front bearing on a la block .crankshaft rebuilders are going to bore it ,clive cams said you can turn the jurnells down and the do not need to be heat treated Have them quote you on doing the cam tunnel, it might be a wash when compared to grinding the journals on the cam down. Saliba's in Springvale can do the cam tunnel if Cranky's can't, but Charlie isn't quick.
Alan Jones
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Re: r block cam
[Re: Ian]
#2012066
02/14/16 10:35 PM
02/14/16 10:35 PM
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Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,144
Melbourne , Australia
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If you're going to go to 60mm, go with the roller bearings. Do you still have those 60mm cams your got off Craig?
Alan Jones
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