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LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

valve spring ?

   
Old May 25, 2008 | 05:08 PM
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valve spring ?
could any let me know which springs can be installed without removing the heads? they need to be able to handle .570 lift. will the 987s or cranes work?
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Old May 25, 2008 | 05:49 PM
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Originally Posted by z28maro
could any let me know which springs can be installed without removing the heads? they need to be able to handle .570 lift. will the 987s or cranes work?
All valve springs can be removed and replaced without removing the heads (heads-on valve spring replacement). Do a search on the subject. The Crane valve spring tool is the best.

WD
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Old May 25, 2008 | 05:57 PM
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i thought some springs required machining to install correctly?
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Old May 25, 2008 | 06:09 PM
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Some do... you need to find one with stock diameter. Crane 10308 is a good spring handling up to 600 lift.
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Old May 25, 2008 | 06:25 PM
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im not really too familar with springs? are there any better options for springs? something good for the 6500 range. trying to set up a good valvetrain and already have everything else
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Old May 25, 2008 | 07:38 PM
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What cam?
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Old May 25, 2008 | 09:51 PM
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306 but may change it out for a slightly higher lift/less duration custom cam in a few months when it comes back apart. .570 lift max ever at the most
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Old May 26, 2008 | 12:13 PM
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could someone maybe post up part #s for springs/retainers/locks and whatever else i need to swap the springs? this is the only part holding me back for my cam swap
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Old May 26, 2008 | 12:22 PM
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I just did a 306 swap. I used the Crane 10308 kit. It came with everything I needed and they work great.
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Old May 26, 2008 | 12:24 PM
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you didnt have to do any machining or anything?
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Old May 26, 2008 | 12:26 PM
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None at all. I also installed these springs with my heads still on the motor. Look the part number up on summit racing or jegs. The whole kit cost as much as most charge just for the springs.
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Old May 26, 2008 | 12:39 PM
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thanks for the input i think thats what ill do the ....10308 kit. do i need new locks or will the stock ones work fine?
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Old May 26, 2008 | 12:40 PM
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It comes with locks. As I said, it's a complete kit.
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Old May 26, 2008 | 12:45 PM
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o awesome thanks thats all i needed to know
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