Bear Gets Good Head(s) - Pontiac GTO Forum
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post #1 of 19 (permalink) Old 06-09-2012, 05:33 PM Thread Starter
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Bear Gets Good Head(s)

Anyone who's read my posts probably knows I'm a big fan of Jim Lehart at Central Vrginia Machine. Recently when I had a cracked head and subsequent failed repair on the Beast, I ordered a set of Edelbrock Heads from him with their basic "Sportsman" port work. They are indeed things of beauty. I took a few photos of the port work - hopefully now the reasons for my positive outlook on Jim and Dave at CVMS will become more evident.

Viton seals and hardened steel spring cups, installed height of each valve spring precisely measured. Not that difficult to do, but many builders don't invest the time and effort to do this.


Precise intake port shape. Notice the work around the "back side" of the intake valve guide. This helps to impart swirl to the incoming charge.


Look at how much of the intake valve seat/opening is visible looking through the port. Think these might flow a little air?


Valve bowl/seat area. Notice the extra work around the edge of the chamber to unshroud the intake valve. This is extremely important for flow at low lifts when the valve is barely off its seat.


Closeup of intake seat. See how smoothly the bowl transitions into the seat? Niiice...


Likewise on the exhaust seat. The chamber boundary has been opened up a little here too for un-shrouding purposes.


Continuing the path out through the exhaust port. You can see the areas that have been smoothed and shaped.


The valves. Edelbrock heads out of the box use 2.11 intakes and 1.66 exhausts. These are "bigger than that"


Bear

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post #2 of 19 (permalink) Old 06-11-2012, 09:47 AM Thread Starter
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Wow... thought I'd get some comments on this by now. I'm hoping I didn't offend folks with the title, I was just trying to be "clever"

Bear

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post #3 of 19 (permalink) Old 06-11-2012, 10:50 AM
 
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Bear - I personally got a good laugh out of the title. I didn't respond because we haven't talked that much and I didn't want to offend by "escalating" that play on words

Those heads are a thing of beauty - kinda make me a little jealous...
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post #4 of 19 (permalink) Old 06-11-2012, 11:41 AM
 
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^^^X2 on that, I thought it was a fun title, and with all the trouble you have gone through with the previous heads, no-one should take offense. Still, I am very jealous of your engine and the new heads. It's nice when I see how things should be done.
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post #5 of 19 (permalink) Old 06-11-2012, 01:59 PM
 
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Originally Posted by BearGFR View Post
Wow... thought I'd get some comments on this by now. I'm hoping I didn't offend folks with the title, I was just trying to be "clever"

Bear
I was blown away by the pics.....just now recovering Had to go back to the other thread and read the whole story. Geezzzz So you never mentioned it yet, what was the line to convince Mrs Bear??
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post #6 of 19 (permalink) Old 06-11-2012, 05:15 PM Thread Starter
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Originally Posted by the65gto View Post
I was blown away by the pics.....just now recovering Had to go back to the other thread and read the whole story. Geezzzz So you never mentioned it yet, what was the line to convince Mrs Bear??
Oh... I just had to promise to buy her a "little something"...

We just put a contact on 13.5 acres of land out in the country plus a house over about 45 minutes west of Fort Worth it does also include a 30x60 shop on a concrete slab with double garage doors though...

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post #7 of 19 (permalink) Old 06-11-2012, 05:25 PM
 
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You really need to quit making me jealous - its just not fair...!!!

Party in Bear's new garage/shop - when does it start...??
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post #8 of 19 (permalink) Old 06-11-2012, 05:32 PM
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post #9 of 19 (permalink) Old 06-11-2012, 05:33 PM
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...oh-yeah, the heads are nice too.
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post #10 of 19 (permalink) Old 06-11-2012, 07:05 PM
 
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bear....NICE property and shop. You will love the head s...!!!! Eric



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