C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Do I trim the drip tabs for these Pro Forms valve covers?

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Old Aug 25, 2003 | 09:12 AM
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Default Do I trim the drip tabs for these Pro Forms valve covers?

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Old Aug 25, 2003 | 10:16 AM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (ld85)

Mine didn't have drip tabs in them :confused: If you run roller rockers you'll need to check the clearance of the baffles. I had to squeeze mine together some to clear mine.
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Old Aug 25, 2003 | 10:31 AM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (AS84)

Mine didn't have drip tabs in them :confused: If you run roller rockers you'll need to check the clearance of the baffles. I had to squeeze mine together some to clear mine.
:thumbs:
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Old Aug 25, 2003 | 10:49 AM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (AS84)

Do cast aluminum after market valve covers have baffling? I haven't seen any. Also, isn't there a clearance problem with the alternator with this brand unless they've notched the valve cover to clear?


[Modified by fixit, 3:57 PM 8/25/2003]
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Old Aug 25, 2003 | 12:17 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (fixit)

I just ordered these
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Old Aug 25, 2003 | 01:25 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (fixit)

Do cast aluminum after market valve covers have baffling?
I have tall Edelbrock Sig Series cast covers on mine. The baffling that they come with includes 2 small stamped pieces of steel and 4 'twist nails'. You assemble them yourself if you want to use it.
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Old Aug 25, 2003 | 05:49 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (HighHopes85)

Here are mine
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Old Aug 25, 2003 | 05:55 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (AS84)

Those look really nice! I got mine from Sallee Chev so I hope they get here by Friday!

I went with the polished perimeter mount to stay stock looking on my little 406!
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Old Aug 25, 2003 | 06:10 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (ld85)

Those look really nice! I got mine from Sallee Chev so I hope they get here by Friday!

I went with the polished perimeter mount to stay stock looking on my little 406!
I'm confused, the first pic is of a center bolt valve cover, then another post with a "peremiter mount" as you mentioned above. If your '85 has stock heads, I'm guessing by "peremiter mount" you mean not center bolt. I have a set of "peremiter bolt" ProForms on my race car and a set of "center bolt" ProForms for my aluminum head '86 that I haven't installed yet. I can tell you that I did have to grind off the drip tabs on the race car to clear the rocker arms & stud girdle. But what about the center bolt ProForms? Anyone run into problems with those?


[Modified by vetracer, 4:11 PM 8/25/2003]
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Old Aug 25, 2003 | 06:20 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (vetracer)

Sorry for the confusion, my DART Pro-1 heads allow for both perimiter and center bolt. Sallee says there are no drip tabs on the the CB's

I may need to trim the drip tabs to clear my RR's but the guy at Sallee said the perimeter style was 1/4" taller too.

If not I know I can buy a "thicker" valve cover gasket which helps some.


[Modified by ld85, 6:21 PM 8/25/2003]
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Old Aug 25, 2003 | 06:31 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (ld85)

id85, I would say right off the top of my head that there is a big difference between the height and width of these two valve covers, and since you can run either one this might determine which is better for your application. It appears to me after seeing both many times that the peremiter bolt ProForms are taller but narrower than the center bolt. I can check measurements when I get home tonight if that would help.
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Old Aug 25, 2003 | 06:33 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (vetracer)

Cool that would be great! I have the CB info http://www.sallee-chevrolet.com/Prof...imensions.html



[Modified by ld85, 6:40 PM 8/25/2003]
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Old Aug 25, 2003 | 08:05 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (ld85)

Ok here it is BIG difference -

The peremiter bolt ProForm valve covers (just like the picture you posted) measure 3 5/8" from the closest point of inside casting (with the drip tabs ground off) to where the gasket seats. The gasket you choose will give you that much more clearance. They are 3-1/2" wide inside. By comparison, the center bolt ProForms are 2-3/8" from the closest point of casting to where the gasket seats and 3 7/8" wide inside. Also, where the gasket seats looks totally different, the CB valve covers have a large continuous raised lip on each side of the gasket that the PB valve covers don't have. Hope this helps.
:seeya


[Modified by vetracer, 6:07 PM 8/25/2003]
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Old Aug 25, 2003 | 08:32 PM
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Default Re: Do I trim the drip tabs for these Pro Forms valve covers? (vetracer)

Thanks, I think the PB's will work well!
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