Pulled the X heads off my 340 to get them set up for new springs, while I have them off I am going to clean up the bowls a little, here is a pic of one intake bowl, do these look like factory cut from the valve seat into the bowl?
X head question
- Thread starter gtsdude
- Start date
-
pishta
I know I'm right....
yes, that looks factory when they cut a 2.02 seat into an as cast 1.88 head. All X heads got the 2.02, but I bet a donut that all 360 heads look the same once you get 1/4" under the valve seat. You can do a bowl blend with a cutter, just open up the bowl to match the seat and taper it down about 1/2" into the bowl. You can also clean up that awful valve guide boss, especially on the exhaust side, make it more of a tapered cone than a block.
If your interested in doing it yourself, I have a couple of videos in my "low budget 318 build" that would be relevant to what you could do in the bowl area. Bowl clean-up would really help take advantage of the bigger valves.
Marcohotrod
Well-Known Member
that looks better than stock, and very shiny for a 45 year old head, I see 4 angles, I don't think stock had that many
Yeah I read through your thread, actually it got me thinking about doing the heads myself once I got this far. I already started on the exhaust, they have hardened seats and a step left in the bowl, those are getting blended in as well. The painted part is what's left to grind off this exhaust bowl to get the hardened seat blended in, then I will open up the rest of the bowl.
That intake bowl is not stock.
I agree, but the casting looks factory textured.... hard to tell by the picture.
I thought that it looked different to me as well. I will just blend in the cut line and smooth out the valve guide area, saves me a little grinding.
-
