deMideon Posted February 13, 2004 Share Posted February 13, 2004 Figured I had to rephrase my earlier question since I didn't get any responses ... I have Canfield 195 heads that I am putting on my 400, and I was checking them with the head gaskets. The holes in the gaskets line up perfectly with the holes in the block. But when I checked the heads, there are 2, what look like water passeges in the head, that are about 50% blocked by the gasket/block. So I need to know if this is a problem or not. I can angle the holes so they do line up ok. I'm just not sure if I should. Here is a picture of the passages I am talking about: http://f1.pg.photos.yahoo.com/ph/demidion/detail?.dir=/My+Z+Cars-My+75+280Z+with+a+377+-2&.dnm=554e.jpg Thanks! Quote Link to comment Share on other sites More sharing options...
A. G. Olphart Posted February 15, 2004 Share Posted February 15, 2004 You are about to drop off the page, so I'll chip in with a suggestion, although it may not be too much help... Why not give Canfield a call & talk to them? They should know, and also be able to explain why a couple of the steam holes are not drilled in the head. Those bother me more than big holes that are half open. (The picture shows both steam holes drilled in the center, but only one of two in the other spots). To quote the Canfield web site "Customer is KING at Canfield, we appreciate the opportunity to furnish you with your cylinder head needs. In fact if your not satisfied, please call 1-330-533-7092 and ask for John, as they say "The buck stops here." Sales 1-330-533-7092 Fax 1-330-533-7063." Quote Link to comment Share on other sites More sharing options...
deMideon Posted February 15, 2004 Author Share Posted February 15, 2004 Thank you! I did try that and the tech support person didn't even ask which passeges I was talking about, he just said "that's Ok". So I don't trust the blow off. Maybe I will try talking to John... Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted February 15, 2004 Share Posted February 15, 2004 on the street , if your running a 400 block,youll NEED to drill STEAM HOLES, contact canfield, edelbrock,AFR,DART,ETC. for the detailed instructions or IDEALLY send the heads to them for the work,(so you don,t screw it up) on a 350 this is not necessary steam hole locations if your running a 400sbc (these instructions are from PRO heads yours might be slightly differant) notice the angle and depth of the holes varies between the pro and AFR heads look around carefully HERES WHAT AFR SAYS 400 BLOCKS: Steam holes are recommended for all 400 block applications. Use a 400 Gasket as a template and drill the three holes, nearest the spark plug side of the head, straight down. The other three which are very near the head bolt holes should be drilled at a 30° angle away from the bolt hole. The center hole will intersect water about 1" down and the two outboard holes to a depth of 2 1/4". Use 1/8 drill. Quote Link to comment Share on other sites More sharing options...
deMideon Posted February 17, 2004 Author Share Posted February 17, 2004 Thanks grumpy but I wasn't asking about the steam holes. It does have those drilled in. There are 2 water passeges that don't line up that I am concerned about... please refer to pic... Sorry I don't know how to get it to just come up like yours Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted February 17, 2004 Share Posted February 17, 2004 if the holes line up 50% like you say I doubt that there will be any problems but you might want to check out a differant gasket company and see if the holes line up better,(just a thought) Quote Link to comment Share on other sites More sharing options...
deMideon Posted February 17, 2004 Author Share Posted February 17, 2004 Ok... thanks! I was just worried ! Quote Link to comment Share on other sites More sharing options...
A. G. Olphart Posted February 18, 2004 Share Posted February 18, 2004 Sorry- You guys have better eyes or bigger monitors than I've got, because when I look at the picture in the link I see only 4 steam holes, not 6. If the two by the head bolt holes next to the end cylinders are there, I sure can't see them. Maybe someone on Canfield's assembly line is using stealth drill bits, or they made a design change, or my sight is rapidly failing. Since my memory is going as well, there are normally 2 steam holes at each siamesed pair of cylinders, right guys???? Guys! Quote Link to comment Share on other sites More sharing options...
deMideon Posted February 18, 2004 Author Share Posted February 18, 2004 Yes you are correct! When Canfield designed the heads they put a lot of reinforcement into them. That ends up meaning that there are no passeges to drill into where the other 2 steam holes would go. I know people that have used Canfield heads on 400s and have had no problem with just using 4 steam hole instead of 6. I assume that it aloows enough water to flow to prevent the hot spots.... but I am still going to use "water wetter"!! Quote Link to comment Share on other sites More sharing options...
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