Best Valves

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Mar 13, 2009 | 10:34 AM

#21

ss.slp.ls1

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From: Orange County, CA

Quote:

Originally Posted by 96capricemgr

whether LS valves are lighter depends on the valves being choosen, a blanket statement doesn't really work.

I would not be so quick to assume a 1.600 valve will fit the seat, dig a little further before commiting to anything.

My first post in this thread is what Ai uses in their 200cc LT1 ported heads. They must use them for a reason.

Mar 13, 2009 | 10:58 AM

#22

96capricemgr

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Explain that replay to me a little please. How does my post have anything to do with your's?

My reply was in response to andysc's blanket statement about valve weights and the apparent assumption that 1.600 would work in stock seats.

I know what AI uses and I know why.

Mar 13, 2009 | 11:03 AM

#23

ss.slp.ls1

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From: Orange County, CA

Quote:

Originally Posted by 96capricemgr

I was saying that they use 1.56" exhaust valves, so when you say that 1.6" exh valves might not fit is probably true. I was trying to agree with you, not disagree.

Mar 13, 2009 | 11:40 AM

#24

96capricemgr

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gotcha

Mar 13, 2009 | 12:06 PM

#25

Z-RATED94

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From: Carol Stream Il.

Quote:

Originally Posted by RamAir95TA

That'll be fine.

The 1.60s would require a different seat, the 2.00 can have the stock seat cut to match up.

Mar 13, 2009 | 12:21 PM

#26

GIZMO

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From: Shelby, NC

Quote:

Originally Posted by madmike9396

What is the best valves to put in lt1 heads the castings are 561 ? Also what is the biggest ? Thanks to anyone with info

The first thing that I would do is dump the 561 heads. I like the Manley valves and have had good luck with them. Depending on your total build going to bigger valves might not be the best idea unless you do a bunch of port work. The stock 1.94/1.50 size will support a lot of HP. There are Super Stockers running well into the nines N/A with stock size valves.