BBC 454 Cam Bearings - Chevelle Tech
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post #1 of 10 (permalink) Old Apr 19th, 17, 10:16 AM Thread Starter
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Shane
 
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BBC 454 Cam Bearings

I want to go with durabond cam bearings.

The two I am looking at, CH12 and CHP-12T

They appear to be the same bearing, but the CHP have a performance coating.


Is it worth paying $50 more for this coating?
Is there anything bad about this coating?
Opinions?

New oil is cheaper than new parts
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post #2 of 10 (permalink) Old Apr 19th, 17, 11:33 AM
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Re: BBC 454 Cam Bearings

Quote:
Originally Posted by fishhead View Post
I want to go with durabond cam bearings.

The two I am looking at, CH12 and CHP-12T

They appear to be the same bearing, but the CHP have a performance coating.


Is it worth paying $50 more for this coating?
Is there anything bad about this coating?
Opinions?
CH is a stock replacement bearing and CHP-12 is a uncoated performance bearing the CHP-12T is performance bearing coated
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post #3 of 10 (permalink) Old Apr 19th, 17, 12:29 PM Thread Starter
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Shane
 
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Re: BBC 454 Cam Bearings

Thank you, what would you recommend?

Is the higher price worth it?

New oil is cheaper than new parts
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post #4 of 10 (permalink) Old Apr 19th, 17, 3:03 PM
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Re: BBC 454 Cam Bearings

At least the CHP-12
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post #5 of 10 (permalink) Old Apr 19th, 17, 9:25 PM
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Re: BBC 454 Cam Bearings

Shane,

What type of engine are you building ? Stock ? Mild performance ? All out race with roller camshaft and tremendous spring pressures ?

I feel that 99% of the time the CH12 is fine. That is what we use 99% or the time and cannot remember a Chevy cam bearing failure in the 30 years I have been in the business. If you are going to have a ton of spring pressure or turning very high rpm then the CHP-12 might be worth the extra money.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

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1984 Buick Riviera - original owner (Wife's car)
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post #6 of 10 (permalink) Old Apr 20th, 17, 8:16 AM Thread Starter
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Shane
 
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Re: BBC 454 Cam Bearings

Quote:
Originally Posted by BillK View Post
Shane,

What type of engine are you building ? Stock ? Mild performance ? All out race with roller camshaft and tremendous spring pressures ?

I feel that 99% of the time the CH12 is fine. That is what we use 99% or the time and cannot remember a Chevy cam bearing failure in the 30 years I have been in the business. If you are going to have a ton of spring pressure or turning very high rpm then the CHP-12 might be worth the extra money.
454.

Straub cam, .600 lift.

High domes

049 heads.

500hp/550tq.

This is my first attempt at a lower half. Done plenty of timing chains, head gasket jobs etc, I'd rather spend the money than go cheap.

Time is against me, I don't have but 2 hours everyday between work (active duty) and sleep so I am buying the parts for when I have a couple hours to assemble something.

New oil is cheaper than new parts
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post #7 of 10 (permalink) Old Apr 20th, 17, 8:21 PM
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Mr Bill
 
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Re: BBC 454 Cam Bearings

Shane,
I thought I replied to this earlier but I guess something happened. Your cam is smaller than the Crane hydraulic rollers we use in Mercruiser 502 upgrades. I have probably done 10 of them and have never used anything other than the CH12 bearings. Believe me if they hold up in a marine application they will be more than adequate for your engine.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

Enginerepairshop.com

1971 Heavy Chevy - original owner
1984 Buick Riviera - original owner (Wife's car)
Team Chevelle #100
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post #8 of 10 (permalink) Old Apr 20th, 17, 8:28 PM
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Mr Bill
 
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Re: BBC 454 Cam Bearings

By the way, it sounds like you are planning to install the cam bearings yourself ? Do you have the correct tool and have you done it before ? Not a good item to learn on If you do decide to give it a try, do them one at a time and then try the camshaft. I start with the rear one. Install it and try the cam in it. Then install #4 and try the cam again. Work your way to the front. By trying the cam after each bearing if you do have one that ends up tight due to crappy factory machining, you will know which one it is and you can scrape it to make it work. If you put all five bearings in at once and then try the cam, if it wont turn you wont have a clue which bearing is giving you the problem.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md

Enginerepairshop.com

1971 Heavy Chevy - original owner
1984 Buick Riviera - original owner (Wife's car)
Team Chevelle #100
BillK is online now  
post #9 of 10 (permalink) Old Apr 20th, 17, 9:02 PM Thread Starter
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Shane
 
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Re: BBC 454 Cam Bearings

Quote:
Originally Posted by BillK View Post
By the way, it sounds like you are planning to install the cam bearings yourself ? Do you have the correct tool and have you done it before ? Not a good item to learn on If you do decide to give it a try, do them one at a time and then try the camshaft. I start with the rear one. Install it and try the cam in it. Then install #4 and try the cam again. Work your way to the front. By trying the cam after each bearing if you do have one that ends up tight due to crappy factory machining, you will know which one it is and you can scrape it to make it work. If you put all five bearings in at once and then try the cam, if it wont turn you wont have a clue which bearing is giving you the problem.
Awesome advice. The local machine shop guy is pretty cheap, I want to ask him if he will come to the shop and do it vs me taking my block over to him. He's right down the road.

With as much as I have into this thing, I don't want to mess it up.

New oil is cheaper than new parts
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post #10 of 10 (permalink) Old Apr 21st, 17, 7:52 AM
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Re: BBC 454 Cam Bearings

I would look at these King bearings that Jegs sells for 22.00, Aluminum cam bearings are a lot tougher then any babbit cam bearing made. I have been using ACL Aluminum cam bearings for years but the price has sky rocketed.

JEGS Performance Products 25405: Performance Cam Bearing Set 1967-Later BBC | JEGS

I f some one has a lot of money in there engine don't skimp on a good cam bearing !!!!!
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