32 valve cylinder heads
Thread Starter
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
32 valve cylinder heads
So wtf is up with these 32 valve cylinder heads I've seen for SBCs? Real engine experts please chime in and discuss this!
http://www.araoengineering.com/Chevy...ll%20Block.pdf
They basically bolt on and use the same cam and such, but you have 36% more valve area, so I'd imagine tons more flow. Sounds like a gas eater, though.
http://www.araoengineering.com/Chevy...ll%20Block.pdf
They basically bolt on and use the same cam and such, but you have 36% more valve area, so I'd imagine tons more flow. Sounds like a gas eater, though.
Drifting
Joined: May 2003
Posts: 1,414
Likes: 2
From: Barrie
Why are they comparing a set of heads that cost 8000-15000 to a set of heads that cost less then 2000?
Here are a few examples of 2valve heads that have higher flow #. There are many more out there
http://www.brodix.com/heads/12x12.html
http://www.dartheads.com/manager/upl...le%20Chief.pdf
Although I think it would be kind of unique to have 4 valves the price and the head bolts in the exhaust ports would prevent me from buying them.
Here are a few examples of 2valve heads that have higher flow #. There are many more out there
http://www.brodix.com/heads/12x12.html
http://www.dartheads.com/manager/upl...le%20Chief.pdf
Although I think it would be kind of unique to have 4 valves the price and the head bolts in the exhaust ports would prevent me from buying them.
Safety Car
Joined: May 2001
Posts: 3,758
Likes: 3
From: Surrey
Hi Kalway,
Being into performance bikes you should know this
There's more area and all that flow stuff, but another advantage is that the max safe rev limit can (should be able to) be increased. Less valve weight spread over more springs. There's also a possible improvement in combustion chamber shape & burn, depending on the design. Seems like a very expensive way to get more power though 
Being into performance bikes you should know this
There's more area and all that flow stuff, but another advantage is that the max safe rev limit can (should be able to) be increased. Less valve weight spread over more springs. There's also a possible improvement in combustion chamber shape & burn, depending on the design. Seems like a very expensive way to get more power though
Thread Starter
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
I was just curious if anyone knew anything about them. They look cool as hell but the price is astronomical. 
I saw a set of heads like these for LT1s on ebay a few weeks ago and was like "damn I wonder if anyone on the forums knows anything about these..."
That dude that had "Merlin" shoulda used a set of these.
I saw a set of heads like these for LT1s on ebay a few weeks ago and was like "damn I wonder if anyone on the forums knows anything about these..."
That dude that had "Merlin" shoulda used a set of these.
Instructor
Joined: Dec 2004
Posts: 216
Likes: 1
From: Lapeer Michigan
Ditto with UKPaul, the breathing is superior with 4 valves.
In 1990, the Corvette ZR-1 was introduced as a limited-production,
high-performance version of the standard Corvette, which contained a special 32-valve overhead cam LT5 engine and about a $20K option.
http://corvettehistory.net/c4
Some other info,
http://www.billzilla.org/2v4vpage2.htm
http://www.selfracing.com/heads.htm
In 1990, the Corvette ZR-1 was introduced as a limited-production,
high-performance version of the standard Corvette, which contained a special 32-valve overhead cam LT5 engine and about a $20K option.
http://corvettehistory.net/c4
Some other info,
http://www.billzilla.org/2v4vpage2.htm
http://www.selfracing.com/heads.htm
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