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Valve covers to clear yt6653 rocker arms on a .689 lift cam

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Valve covers to clear yt6653 rocker arms on a .689 lift cam

Old 10-19-2018, 01:06 PM
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Default Valve covers to clear yt6653 rocker arms on a .689 lift cam

I am using ict Billet 3/4" risers and stock covers.rhey clear after a whole lot of grinding but getting them to seal has been a pain. Does anyone make a cover that needs very little grinding and will seal?
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Old 10-19-2018, 03:18 PM
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I'm starting a 427 Ls3 build as well. Is that a solid lifter cam spec or hydraulic? As far as the covers go I picked up set of one inch studded spacers with o-ring grooves and they came with the longer bolts as well. I paid $75 bucks for them a few years back in the for sale section. I don't know what company was making them. Got them about 4 yrs ago.

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Old 10-19-2018, 03:39 PM
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Old 10-19-2018, 05:07 PM
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Costs several bill$, but the Katech covers clear anything you throw at them and will.not.leak. Hereís a shot of mine...



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Old 10-19-2018, 05:42 PM
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Originally Posted by handyandy496 View Post
I'm starting a 427 Ls3 build as well. Is that a solid lifter cam spec or hydraulic? As far as the covers go I picked up set of one inch studded spacers with o-ring grooves and they came with the longer bolts as well. I paid $75 bucks for them a few years back in the for sale section. I don't know what company was making them. Got them about 4 yrs ago.
Originally Posted by handyandy496 View Post
solid roller. Those are the spacers I have and are a pain. 1 more try at sealing them and i'm going to the katechs mentioned
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Old 10-19-2018, 05:43 PM
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Originally Posted by Che70velle View Post
Costs several bill$, but the Katech covers clear anything you throw at them and will.not.leak. Hereís a shot of mine...



I'm learning cheaper isn't always better.thanks, I will look into those
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Old 10-19-2018, 05:47 PM
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$499.00 dont look to bad.
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Old 10-19-2018, 08:28 PM
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Holley
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Old 10-19-2018, 08:54 PM
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Originally Posted by AINT SKEERED View Post
$499.00 dont look to bad.
Gotta figure in the relocation brackets, and longer plug wires. If you want the slotted set, like Iím running, with the aluminum piece to have custom machined (outsourced which is extra money as well), itís little more as well. I guess I have over a grand in those. Itís only money!
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Old 10-19-2018, 09:06 PM
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Originally Posted by AINT SKEERED View Post
solid roller. Those are the spacers I have and are a pain. 1 more try at sealing them and i'm going to the katechs mentioned
You can always empty your wallet at something. That's the easy way. I cant see why these cant be made to work. Just looking at mine for the first time really and new fasteners will be needed to make them seal. I'm not into how engines look but how I can get them to perform for my dollars.
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Old 10-19-2018, 09:36 PM
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Originally Posted by handyandy496 View Post
You can always empty your wallet at something. That's the easy way. I cant see why these cant be made to work. Just looking at mine for the first time really and new fasteners will be needed to make them seal. I'm not into how engines look but how I can get them to perform for my dollars.
sure they can be made to work. Hydraulic roller you set and forget. Solid will require some periodic maintenance of valve lash. I dont want to fight an oil leak each time I reset valves.
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Old 10-19-2018, 09:44 PM
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I’ve read too many horror stories on valve cover spacers leaking. I refuse to take the chance of oil on headers, and a car fire.
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Old 10-19-2018, 09:46 PM
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Originally Posted by Che70velle View Post
Iíve read too many horror stories on valve cover spacers leaking. I refuse to take the chance of oil on headers, and a car fire.
especially since I wrapped my headers to keep noise down and heat in pipes
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Old 10-19-2018, 09:54 PM
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The issue I see with running spacers is youíre now trying to seal 2 surfaces using the same oem bolts and inch# torque. The bolts arenít even big enough to increase the torque either. One thing that might help is a thin film layer of silicone paste on the O ring seals. Also wouldnít hurt to make sure your spacers are flat with a straight edge and feeler gauges.

Otherwise, yeah aftermarket tall valve covers will get the job done.
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Old 10-19-2018, 10:46 PM
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I had some Ebay covers.would not sit on the head properly due to how the rocker arms sit
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Old 10-19-2018, 11:21 PM
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After seeing this photo, you’ll likely do a little clearancing on whatever you buy. That’s tight!
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Old 10-20-2018, 12:26 AM
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I got away with Holley covers without spacers with T&D rockers on mast heads. But they have a tall rail
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Old 10-20-2018, 01:38 AM
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Originally Posted by AINT SKEERED View Post
I had some Ebay covers.would not sit on the head properly due to how the rocker arms sit
Well it looks like you may have to use YTís specially clearanced spacers. You can find them on their web site for around $400. Or grind your own as was mentioned.
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Old 10-20-2018, 04:14 AM
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I might rtv silicon the cover to the spacer and only worry about the gasket at bottom
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Old 10-20-2018, 11:59 AM
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Well sealing them is one thing. Problem #2 is it looks like you need additional clearance for those rockers as well. Grinding would be required or use the YT5123 spacers I mentioned earlier. They provide the additional clearance needed.

http://store.yellaterra.com.au/alloy...2-ls3-lsa-lsx/
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