Cam Journal Size

12-02-2010, 06:27 PM

What's the largest cam journal size that can be used in a production SBC 010 block? Will it go big enough to use a 50 mm cam without problems?

Thanks
Scott Tilley

Tom Turner · 12-02-2010, 10:37 PM

No. Not enough material in the cam journal area. You can sucessfully bore for the bearings but when recutting for the oil groove, any core shift will run you out of material. A bowtie block is a safer bet (much better investment too) TT

Bobby Stevens · 12-03-2010, 01:54 PM

Scott, you can also use a over sized BB chevy babet cam bearing as well. I did it with one of my small blocks and it worked great.

Bobby Stevens

Tom Turner · 12-03-2010, 10:00 PM

Scott; Bobby's right (I should have elaborated) We even did some with SBF bearings but it was a long time ago (modified eliminator days) when we were trying everything to make more power cuz you could'nt really buy it. Today, the choices are endless and doing a bunch of machine work on an 010 block is a poor investment in my opinion.

12-06-2010, 05:15 PM

Thanks for the info. I'll stick with the stock cam journal size for the 010 blocks.

rayfin · 12-06-2010, 11:44 PM

I think Bill "Grumpy" Jenkins used to do that. Just a thought. Maybe I don't know what I'm talking about but it seems like it.

12-02-2010, 06:27 PM	#1
Tilley2007 Guest Posts: n/a	Cam Journal Size What's the largest cam journal size that can be used in a production SBC 010 block? Will it go big enough to use a 50 mm cam without problems? Thanks Scott Tilley

12-02-2010, 10:37 PM	#2
Tom Turner Member Join Date: Jan 2005 Location: Lake Tapps, Washington Posts: 137 Likes: 0 Liked 0 Times in 0 Posts	Re: Cam Journal Size No. Not enough material in the cam journal area. You can sucessfully bore for the bearings but when recutting for the oil groove, any core shift will run you out of material. A bowtie block is a safer bet (much better investment too) TT

12-03-2010, 01:54 PM	#3
Bobby Stevens Junior Member Join Date: Aug 2004 Posts: 49 Likes: 0 Liked 0 Times in 0 Posts	Re: Cam Journal Size Scott, you can also use a over sized BB chevy babet cam bearing as well. I did it with one of my small blocks and it worked great. Bobby Stevens

12-03-2010, 10:00 PM	#4
Tom Turner Member Join Date: Jan 2005 Location: Lake Tapps, Washington Posts: 137 Likes: 0 Liked 0 Times in 0 Posts	Re: Cam Journal Size Scott; Bobby's right (I should have elaborated) We even did some with SBF bearings but it was a long time ago (modified eliminator days) when we were trying everything to make more power cuz you could'nt really buy it. Today, the choices are endless and doing a bunch of machine work on an 010 block is a poor investment in my opinion.

12-06-2010, 05:15 PM	#5
Tilley2007 Guest Posts: n/a	Re: Cam Journal Size Thanks for the info. I'll stick with the stock cam journal size for the 010 blocks.

12-06-2010, 11:44 PM	#6
rayfin Member Join Date: Mar 2009 Location: sioux city Posts: 134 Likes: 1 Liked 0 Times in 0 Posts	Re: Cam Journal Size I think Bill "Grumpy" Jenkins used to do that. Just a thought. Maybe I don't know what I'm talking about but it seems like it.