Can somebody educate me on cam journal sizes?

What are the Hemi sizes? What was the stock size?

Thanks.

-Scouder

 

Stock size is 2.000 inches. Most everyone runs the 2.125 inch journal now.

 

60 mm or 2.3622 inches is also available.

Chris

 

Great question, does anyone have this same info for a Big Block Chevy ??

 

cam size

Ford cam bearings. I be leave they are the 2 1/8 or 2.125 Don

 

Thanks guys. If 2.125 is the most common, then I'm set to go.

-Scouder

 

The standard Chevy big block cam journals are 1.948". There are also 50mm (1.969"), "Ford" 2.124", 55mm (2.165"), and 60mm (2.364") journal camshafts in use for BBC. (Yes, there are some others, but these are the most commonly used.) Regards, Chase

 

Incidentally, the stock Chrysler 426 hemi camshaft journals step down in diameter from front to back. They are: 1.999", 1.983", 1.968", 1.952", and 1.749". Thanks, Chase

 

Chase
How much timing comtrol is gained from rigidity using a ford 2.125 to say 55 or 60 mm with the .904 lifter as the base circle can only get so big

 

Thanks Chase, I watched you run at Miami-Hollywood many times as a kid, in the twin turbo AND supercharged, Golden Gator One of my idols I might add I dreamed of racing an A/Fuel funny car in Pro-Comp, that class is gone, but the AHRA has a place for my combo (Thanks Rod Saint ) Would you consider designing a cam for my BBC on Nitro ?? PM or start another thread if you like, I'm BackMotor Mike w/ the rear engine funny car, soon to be injected Nitro, new engine almost completed (needs cam) My E-Mail >> FCRacr@aol.com Thanks

 

Thank You for the kind words Chase, I'll get you my info ASAP !!

 

Hello John348, comparing the 2.125" journal cams that we offer, to our 60mm journal gun drilled versions, there are very decent theoretical benefits with the 60mm. ("Theoretical" is a neat word, if something doesn't come out in real-life like was calculated, it's a great easy way out.). The 60mm cam will have about a 42% increase in torsional rigidity (twisting from front to rear). The beam strength (deflection between journals, such as the forces that fully open valves exert) on the 60mm is up about 70% from the 2.125". There are certainly other factors that can be considered to find absolute values, but on an apples-to-apples comparison, these are the basic figures. Thanks, Chase

 

Thanks Chase
I did not think it would be that much, wow.
Any news on the big C making cams and lifters soon
john

 

Thanks John, We're looking at about 10 days for the 426 Hemi cams, and early March for the lifters. Chase

 

Hi chase r all 55mm hemi cams 48 Degree Raised cams??

 

Have two blocks with 55mm but they r NOT raised cam blocks?