Advantages of larger cam journal - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech Advantages of larger cam journal

Print Thread

Advantages of larger cam journal #1567583 01/23/14 02:50 PM 01/23/14 02:50 PM
Joined: Dec 2012 Posts: 1,823 Wind Gap,Pa. S Sammy OP top fuel
Sammy OP top fuel S Joined: Dec 2012 Posts: 1,823 Wind Gap,Pa.	Since these new roller cams are going to cost me twice the price, I was leaning towards a 53 mm cam What's the advantage over a standard cam journal?

Re: Advantages of larger cam journal [Re: Sammy] #1567584 01/23/14 02:55 PM 01/23/14 02:55 PM
Joined: Feb 2006 Posts: 2,379 MD Kevins493 top fuel
Kevins493 top fuel Joined: Feb 2006 Posts: 2,379 MD	Less flex (both in bending and torsion), and you can make the base circle bigger.

Re: Advantages of larger cam journal [Re: Kevins493] #1567585 01/23/14 03:14 PM 01/23/14 03:14 PM
Joined: Oct 2006 Posts: 427 Sweden Mopar Guy mopar
Mopar Guy mopar Joined: Oct 2006 Posts: 427 Sweden	Might be good for more lift to i gues !?

Re: Advantages of larger cam journal [Re: Sammy] #1567586 01/23/14 04:20 PM 01/23/14 04:20 PM
Joined: Aug 2003 Posts: 43,173 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,173 Bend,OR USA	Quote: Since these new roller cams are going to cost me twice the price, I was leaning towards a 53 mm cam What's the advantage over a standard cam journal? I would go with the standard Ford size, which is 55 MM I think The larger journal sizes allow you to have a cam ground with more lift and not have to reduce the size of the base circle or grind the cam in closer to the center of the cam, to get the additional lift EDITED, I'm under the impression that the newer Ford motors come with 55 MMM roller cam bearings, and there not much money to buy them from Ford either I remember Earl Wade telling me years ago(1991 or so)that Ford had the biggest I.D cam bearings of all the U.S. auto makers, his cam in his NSS 427 F.E. 1963 1/2 lightweight Galaxy had over 1.00 lift back then I never got to measure the valve lift at the retainers but I think he had no reason to lie to me about that back then Last edited by Cab_Burge; 01/24/14 01:51 AM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Advantages of larger cam journal [Re: Cab_Burge] #1567587 01/23/14 05:19 PM 01/23/14 05:19 PM
Joined: Nov 2004 Posts: 6,890 North Alabama M Monte_Smith master
Monte_Smith master M Joined: Nov 2004 Posts: 6,890 North Alabama	Quote: Quote: Since these new roller cams are going to cost me twice the price, I was leaning towards a 53 mm cam What's the advantage over a standard cam journal? I would go with the standard Ford size, which is 55 MM I think The larger journal sizes allow you to have a cam ground with more lift and not have to reduce the size of the base circle or grind the cam in closer to the center of the cam, to get the additional lift A BBF is 54mm which is a very common babbit bearing size Monte

Re: Advantages of larger cam journal [Re: Monte_Smith] #1567588 01/23/14 05:29 PM 01/23/14 05:29 PM
Joined: Apr 2005 Posts: 1,505 TN S SCATPACK 1 pro stock
SCATPACK 1 pro stock S Joined: Apr 2005 Posts: 1,505 TN	A BBF is 54mm which is a very common babbit bearing size Monte What size would you need to go to if you wanted to run roller cam bearings? Jerry Old Geezer Racing

Re: Advantages of larger cam journal [Re: SCATPACK 1] #1567589 01/23/14 09:55 PM 01/23/14 09:55 PM
Joined: Nov 2009 Posts: 3,082 St. Paul , Mn. tubtar master
tubtar master Joined: Nov 2009 Posts: 3,082 St. Paul , Mn.	Quote: A BBF is 54mm which is a very common babbit bearing size Monte What size would you need to go to if you wanted to run roller cam bearings? Jerry Bring your wallet and take your pick. 65 m.m. , 70 m.m. , 75 m.m. I am struggling to recall the largest I have read about , but 90 m.m. rings a bell.

Re: Advantages of larger cam journal [Re: SCATPACK 1] #1567590 01/24/14 12:01 AM 01/24/14 12:01 AM
Joined: Sep 2003 Posts: 1,049 San Jose Ca. boatracer572 super stock
boatracer572 super stock Joined: Sep 2003 Posts: 1,049 San Jose Ca.	jesel has roller 54mm bearings 8009447-IMG_5646.jpg (57 downloads)

Re: Advantages of larger cam journal [Re: tubtar] #1567591 01/24/14 12:02 AM 01/24/14 12:02 AM
Joined: Jan 2003 Posts: 19,363 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,363 Las Vegas	You can do roller bearings at 55MM. I have a 55MM and 70MM cam both roller bearing "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Re: Advantages of larger cam journal [Re: Al_Alguire] #1567592 01/24/14 01:34 AM 01/24/14 01:34 AM
Joined: Nov 2004 Posts: 6,890 North Alabama M Monte_Smith master
Monte_Smith master M Joined: Nov 2004 Posts: 6,890 North Alabama	You can get roller bearings in 54,55,60 and 70mm, that I know of. 54&55mm cams are not that high. 60 and larger.....bring a big check.........LOL!!! Monte

Re: Advantages of larger cam journal [Re: Monte_Smith] #1567593 01/24/14 01:53 AM 01/24/14 01:53 AM
Joined: Jul 2004 Posts: 487 D Dyno1 mopar
Dyno1 mopar D Joined: Jul 2004 Posts: 487	A simple way to do it is have the front four journals cut to the 429/460 Ford size and leave the rear journal stock Mopar. Comp has cores for this application. Dyno

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1