W5 heads

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Remember many of these heads are on 4.100 or bigger bores.
It is currently 4.185" bore. But it's got some wear on it. I'm going to get it sonic checked. If it'll go 4.220 I think that's what I'm going to do.
 
Geometry looks pretty good.

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Cam for the W5 engine.Cam is supposed to be really good with these heads on alcohol fuel. Probably not very good on gasoline. But I hardly ever run gasoline anymore. I've updated. The specs. BTW we are using 1 75 ratio rocker arms

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I can’t see how a cam is good for one fuel and not another.
Compression ratio - sure.
 
I can’t see how a cam is good for one fuel and not another.
Compression ratio - sure.
Too be honest with you. I don't understand all of the dynamics. As explained to me. It has something to do with emptying the cylinder. But that's what I was informed. I guess we'll see.
 
Brett said that the ports sounded really good when he checked them. Larry Smith did the porting. Brett was very complimentary of his work.

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I can’t see how a cam is good for one fuel and not another.
Compression ratio - sure.
I understand Top Fuel is totally different, but they have to open the exhaust valve vary late cause the pressure so high it would destroy the valvetrain if they tried to open it early. Not saying this is what's happening with alcohol but image there could be some effect the cam has to compensate for.
 
Got my heads back. They look pretty good. Hopefully they perform as well as they look.

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Very nice. They look like they went a little further than mine did.
 
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