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Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Mar 1, 2005 | 02:43 PM
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Where to buy good valves???
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Old Mar 1, 2005 | 04:25 PM
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WWW.SDPC2000.COM
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Old Mar 1, 2005 | 06:07 PM
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Originally Posted by 66deuce
Thanks, looks like Lingenfelter is having a sale on them too.
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Old Mar 1, 2005 | 06:16 PM
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Who,s and what part number are you looking for.
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Old Mar 1, 2005 | 06:31 PM
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Originally Posted by ROGERSPERF.
Who,s and what part number are you looking for.
LS1 2.02" or 2.05"

I also need to know (I posted in another post) how much you can machine a stock 5.3 valve seat?

I'd like to go with 2.05" intakes. If I need to I'll replace the seats, but if I can machine the stock seats to 2.02" maybe I'll settle for that???
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Old Mar 1, 2005 | 06:48 PM
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I have seen lot of ls1 heads with 1.600 and 2.02 valves in them with stock seats but if i were to do it i would put a larger seat in.As far as valves i like ferrea.
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Old Mar 1, 2005 | 08:31 PM
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i posted in your other thread that when i had vinci port my 4.8L heads, they put ferrea 2.02/1.60 valve in them using the stock seats.
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Old Mar 1, 2005 | 08:42 PM
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. We use Ferrea valves (around 120.00 for intake valves) the stock exhaust valve will flow very well so I would not change it. 2.04 is as large as I would prefer to go on a stock seat but Ferrea does not make one. 2.055 requires a larger seat. As far as using a 1.6 valve on a stock seat It may last for a little while but who wants to take that chance? The stock seat is smaller than 1.6" so if the valve job is in the right place on the valve it is seating on aluminum.
Last edited by BrentB@TEA; Mar 1, 2005 at 08:52 PM.
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Old Mar 1, 2005 | 08:47 PM
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what'll last a little while? my 1.60 valve on the stock seat? or a 2.04 valve on the stock seat?
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Old Mar 1, 2005 | 08:48 PM
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1.55 and 2.02 is your best bet with out having to replace the seats.
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Old Mar 1, 2005 | 08:49 PM
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I can give you a good deal on Manley valves.2.02 or 2.055 let me know.
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Old Mar 1, 2005 | 08:53 PM
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Originally Posted by mrr23
what'll last a little while? my 1.60 valve on the stock seat? or a 2.04 valve on the stock seat?
I changed my post to clear up any confusion. Thanks!
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Old Mar 3, 2005 | 02:05 PM
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So 1.55 exhaust valves will work fine with the stock seat? How will this affect a mildly ported head?

Thanks

Kyle
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