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Old 08-19-2020 | 08:42 AM
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27formula
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Built a 496 with EQ heads and this roller cam. Running gill exhaust and the mercruiser wet risers. Wondering if anyone can tell me if reversion will be an issue? Was going to modify and make dry but if I don’t have to I won’t.
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Old 08-19-2020 | 09:01 AM
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whats the lsa ?
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Old 08-19-2020 | 09:25 AM
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Original Hp500 had same exhaust but smaller cam with much less overlap and had reversion issues. Merc then came out with a much taller riser to create a larger rate of fall to combat this, merc still provided instructions how to clear out after extended idling.

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Old 08-19-2020 | 09:36 AM
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Looked it up for the OP.... Looks like it's a Howards hydraulic roller - 114 LSA.
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Old 08-19-2020 | 10:02 AM
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Originally Posted by f-2 speedy
whats the lsa ?
114
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Old 08-19-2020 | 10:04 AM
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Looks like I will have to modify and make them dry. Thanks guys.
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Old 08-19-2020 | 10:09 AM
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is the rotating assembly cast or forged
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Old 08-19-2020 | 10:27 AM
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Originally Posted by F-2 Speedy
is the rotating assembly cast or forged
forged.
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