Re: 2nd Gen Hemi, what cam size?
[Re: 590 Challenger]
#2592550
12/15/18 10:25 PM
12/15/18 10:25 PM
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Joined: Jan 2003
Posts: 5,122 Chicago Blackhawks
hemicar1971
master
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master
Joined: Jan 2003
Posts: 5,122
Chicago Blackhawks
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Once we cut the roller lifter apart and push it enough out of the way to pull the Cam shaft out and then push the lifter into the cam location to get it out without any damage, I will measure the cam journals to see what they measure on the cam shaft. Motor ran good with a main stud laying in the oil pan 870s and the roller bearing gone away on one lobe. Cam is still good but this Indy block has been a pain over the years. Might take a few weeks.
1971 HEMI E BODY REGISTRY
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Re: 2nd Gen Hemi, what cam size?
[Re: hemicar1971]
#2592573
12/15/18 11:25 PM
12/15/18 11:25 PM
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Joined: Jan 2015
Posts: 493 Parts unknown
590 Challenger
OP
mopar
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OP
mopar
Joined: Jan 2015
Posts: 493
Parts unknown
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Once we cut the roller lifter apart and push it enough out of the way to pull the Cam shaft out and then push the lifter into the cam location to get it out without any damage, I will measure the cam journals to see what they measure on the cam shaft. Motor ran good with a main stud laying in the oil pan 870s and the roller bearing gone away on one lobe. Cam is still good but this Indy block has been a pain over the years. Might take a few weeks. Thanks, sounds like a nightmare. I just switched from the indy block, I had a no problems with it, but being it was one of the first water blocks with no webbing, I was really worried about breaking it. Good luck
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Re: 2nd Gen Hemi, what cam size?
[Re: 590 Challenger]
#2592649
12/16/18 03:41 AM
12/16/18 03:41 AM
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Joined: Jan 2003
Posts: 3,505 DFW
mr_340
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master
Joined: Jan 2003
Posts: 3,505
DFW
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http://www.compcams.com/Pages/410/chrysler-technical-info.aspxCamshaft Journal Diameter Many of the newer racing engines utilize a larger than standard cam bearing journal diameter. The advantages of the larger diameter are less flex and a larger base circle to smooth out the lobe design, making this a very desirable addition to any extreme racing engine. It is very common to use a 2.125” Ford babbit bearing in the Hemi engine. Some of the latest oval track blocks feature a roller bearing and require a 1.968” journal diameter. Make sure to specify journal size when ordering your cam. If no special size is requested, the standard journal will be chosen.
Floyd Lippencott IV
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Re: 2nd Gen Hemi, what cam size?
[Re: 590 Challenger]
#2592947
12/16/18 09:41 PM
12/16/18 09:41 PM
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Joined: Jan 2003
Posts: 5,122 Chicago Blackhawks
hemicar1971
master
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master
Joined: Jan 2003
Posts: 5,122
Chicago Blackhawks
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I measured the cam shaft were the bearings would be and it came to 2.167, 2.169, 2.1685, 2.170, 2.1675. Tough one with the cam roller bear still in it but here is what I got but it could be a little off, 2.2484-----2.150. Hope this helps block will go to the machine shop in a couple of day to be honed.
1971 HEMI E BODY REGISTRY
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Re: 2nd Gen Hemi, what cam size?
[Re: 590 Challenger]
#2592952
12/16/18 09:51 PM
12/16/18 09:51 PM
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Joined: Jan 2003
Posts: 5,122 Chicago Blackhawks
hemicar1971
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master
Joined: Jan 2003
Posts: 5,122
Chicago Blackhawks
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55mm equals 2.16
60mm equals 2.36
62.738 equal 2.47
I would imagine it would depend on what bearing you are running to make up the distance between block and cam. You might need to call someone like Tim Banning or Todd on this board Saquash and ask them they have more experience than I have with building different hemi motors.
Last edited by hemicar1971; 12/16/18 09:54 PM.
1971 HEMI E BODY REGISTRY
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