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BBC Valve Cover Removal with PB?

 
Old 01-06-2019, 12:26 PM
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leigh1322
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Default BBC Valve Cover Removal with PB?

I'm In the process of cam selection for my LS6 clone build.
There is One question I can't answer yet:
How hard is it to get the driver's valve cover off a big block in the car with power brakes? Normal or PITA?
Do you need the cut down corner valve covers or not?
Do the 3/4" taller ones come off?
Do roller rockers fit?
Does the booster have to be removed?

Thanks in advance

I see no issues with my current manual brakes, I just can't figure out how much tighter is is going to get with a PB booster.

Last edited by leigh1322; 01-06-2019 at 12:29 PM.
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Old 01-06-2019, 02:30 PM
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OldCarBum
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It is much tighter with the PB Booster and anything much taller than stock won't fit, let alone allow clearance for removal.
I've seen some tall fabricated valve covers that look like they might fit and be able to be removed.
When I do my engine removal I plan to fit check several type before I remove the engine just to see what will actually fit.
Most hydraulic aluminum roller rockers won't fit under the OEM valve covers.
I plan to use Crower stainless steel hydraulic roller rockers with the stock height valve covers.
The Crowers are pricey but will hold up under extreme horsepower and high lift applications.
The speed/machine shop I'm working with install the OEM valve covers on Corvette engines where the owners are running rollers cams, lifters and rockers, but want the OEM valve covers on the engine for the restoration value.
The shop machines off the oiling drip rails, modifies the locking mechanism on the rocker and if necessary install double gaskets.
There are aftermarket chrome steel valve covers that look identical to the OEM, but are manufactured without the internal drip rails to clear roller rockers.
I see numerous photos in threads where forum members with big blocks have installed taller valve covers with the PB booster and some with hydro boost PB systems, which would give much more clearance.
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Old 01-07-2019, 03:34 PM
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540 vette
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I had stock style valve cover on a 540 in a 77. I doubled up the cork gaskets and the roller rockers fit under them. And no they are not hard to get off.
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Old 01-07-2019, 05:19 PM
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Thanks!! That's exactly what I was hoping to hear!
And your 77 has power brakes right?
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Old 01-07-2019, 07:13 PM
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TimAT
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I have a BBC with taller than stock rocker covers. 3/8 thick gaskets and power brakes. Takes some wiggle, but the left cover comes off no problem. The tight spot is the front under the alternator.
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Old 01-07-2019, 08:47 PM
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I rebuilt my L88 engine with roller rockers and stud girdles. I ended up having to install Teague Marine valve covers to clear everything and still miss the brake booster. Not completely original looking, but I had no other options.




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Old 01-07-2019, 11:12 PM
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Originally Posted by chazde3 View Post
I rebuilt my L88 engine with roller rockers and stud girdles. I ended up having to install Teague Marine valve covers to clear everything and still miss the brake booster. Not completely original looking, but I had no other options.



Very nice valve covers.
Was there any fitment issues with the alternator?
Were you able to install them with the motor in the car?

Last edited by OldCarBum; 01-08-2019 at 01:53 AM.
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Old 01-08-2019, 07:25 AM
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Originally Posted by OldCarBum View Post

Very nice valve covers.
Was there any fitment issues with the alternator?
Were you able to install them with the motor in the car?
I had to space the alternator forward a bit to clear the valve covers, but it is a cs144 alternator so the size is different than a stock one for our cars. And the valve covers can come on and off just fine as it sits.
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Old 01-08-2019, 12:32 PM
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SteveG75
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I am using the CFR "tall" stock style covers on my BBC with PB with no issues. Edelbrock heads with Comp steel roller rockers and poly locks. They have the notched corner but I don't think it makes a difference. They are 1/2" taller than stock plus I use studs on the lower edge to help keep the gasket in place (and help control leaks).

I am currently looking at the new Edelbrock Elite II valve covers which are 3" tall with no notch. Pretty sure they will fit as well.

https://www.cfrperformance.com/CHEVY...z-9504-t-c.htm

Last edited by SteveG75; 01-08-2019 at 12:44 PM.
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Old 01-08-2019, 05:10 PM
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I just ordered a set of the Teague Marine valve covers for my 496.
Should be here tomorrow or Thursday.
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Old 01-09-2019, 09:04 PM
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Thanks SteveG75. That's exactly what I may have to do.
Were the taller covers necessary for your roller rockers?
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Old 01-10-2019, 02:16 AM
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I don't have PB but yes the tallers covers were required.



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Old 01-10-2019, 01:01 PM
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Originally Posted by leigh1322 View Post
Thanks!! That's exactly what I was hoping to hear!
And your 77 has power brakes right?
Yes my 77 was power brakes.
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