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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? |
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 $75 bucks for them a few years back in the for sale section. I don't know what company was making them. Got them about 4 yrs ago. |
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Costs several bill$, but the Katech covers clear anything you throw at them and will.not.leak. Here’s a shot of mine... https://cimg3.ibsrv.net/gimg/ls1tech...5b17729ab1.png |
Originally Posted by handyandy496
(Post 19988657)
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 $75 bucks for them a few years back in the for sale section. I don't know what company was making them. Got them about 4 yrs ago.
Originally Posted by handyandy496
(Post 19988671)
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Originally Posted by Che70velle
(Post 19988725)
Costs several bill$, but the Katech covers clear anything you throw at them and will.not.leak. Here’s a shot of mine... https://cimg3.ibsrv.net/gimg/ls1tech...5b17729ab1.png |
$499.00 dont look to bad. |
Holley |
Originally Posted by AINT SKEERED
(Post 19988750)
$499.00 dont look to bad. |
Originally Posted by AINT SKEERED
(Post 19988744)
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 |
Originally Posted by handyandy496
(Post 19988828)
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. |
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. |
Originally Posted by Che70velle
(Post 19988839)
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. |
The issue I see with running spacers is you’re now trying to seal 2 surfaces using the same oem bolts and inch# torque. The bolts aren’t 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 wouldn’t 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. |
I had some Ebay covers.would not sit on the head properly due to how the rocker arms sit https://cimg6.ibsrv.net/gimg/ls1tech...6decf8a37.jpeg |
After seeing this photo, you’ll likely do a little clearancing on whatever you buy. That’s tight! |
I got away with Holley covers without spacers with T&D rockers on mast heads. But they have a tall rail |
Originally Posted by AINT SKEERED
(Post 19988861)
I had some Ebay covers.would not sit on the head properly due to how the rocker arms sit https://cimg6.ibsrv.net/gimg/ls1tech...6decf8a37.jpeg |
I might rtv silicon the cover to the spacer and only worry about the gasket at bottom |
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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