LT4 valve springs on L98 heads
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Joined: Jan 2000
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Curse,
I don't have an L98 head to measure the pocket, but I do have a 12551483 valve spring, and the O.D. of the spring is 1.342".
They would not fit my LT1 iron heads without machining. On aluminum heads, it is probably a good idea to machine anyway so that you can use steel spring washers in the seats to protect the heads from being worn away by the spring motion.
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Later,
Vader
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"Make Me Bad"
Adobe Acrobat Reader 4.0
I don't have an L98 head to measure the pocket, but I do have a 12551483 valve spring, and the O.D. of the spring is 1.342".
They would not fit my LT1 iron heads without machining. On aluminum heads, it is probably a good idea to machine anyway so that you can use steel spring washers in the seats to protect the heads from being worn away by the spring motion.
------------------
Later,
Vader
------------------
"Make Me Bad"
Adobe Acrobat Reader 4.0
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iTrader: (2)
Joined: Jul 1999
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From: Lynn Haven/Panama City, FL, USA
Car: 88 Monte SS
Engine: Super-rammed L-98 383
Transmission: T-56 6-Speed
Axle/Gears: 8.5" G-BODY G-80 3.73
What Vader said is absolutely correct, I used these with my Aluminum L-98 heads along with the matched shims, plus extra shims to get the correct installed height. The valve guides had to be machined for the teflon seals and the extra lift also.
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88 Monte SS 355 TPI/LT-4 HOT CAM/AFR Hydra-rev/ T-56 6-Speed
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88 Monte SS 355 TPI/LT-4 HOT CAM/AFR Hydra-rev/ T-56 6-Speed
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