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Generation III Internal Engine
Manley valves?

Generation III Internal Engine 1997-2006 LS1 | LS6

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Manley valves?

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Old

Apr 7, 2005 | 02:17 PM

#1

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From: Gardnerville, NV.

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Manley valves?

What's the opinion of Manley Street series Pro Flo LS1 Valves?

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Apr 7, 2005 | 05:02 PM

#2

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From: Hatboro PA

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Even though manley makes a nice valve and i use them in my shop i still prefer
ferrea valves over them.Yes they cost a little more but the quality is excellent.

Mike Rogers

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Apr 7, 2005 | 08:33 PM

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I agree I like the Ferrea valves better

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Apr 8, 2005 | 08:43 AM

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Well...already bought the Manleys.
I understand one of the major LS1 head shops uses them (hint 3-letter acronym and not TEA)

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Apr 8, 2005 | 09:14 AM

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heres my opinion on them..

a unamed friend i know has a "stock" ls1... when he pulled the heads for new lifters, he put manly valves in..

he now magicly has a LS1 that runs much faster then it should, and beats on lightly modded 03/04cobras on the street... made a hell of a diff if you ask me.

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202, flo, flow, ls1, ls1tech, manley, margin, pro, proflow, review, stock, street, tech, valve, valves

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