I didn't get a ton of time to work on them today but I did get 12 of the bosses bullet nosed and also cleaned up the exhaust ports a bit. Although I wasn't sure initially about working the guide bosses, I'm glad I did it. You can really see a difference in the port opening after the fact. Hopefully I'll get some free time after work this week to finish them up. Anyhow, thanks for the push. I appreciate it. -Trent

Finally got them on the flow bench... In hindsight, there are a few things I wish I had done differently but since this is a budget build and my time to work on projects is few and far between, I'll take them for what they are, at least for now.

Just to recap, these are 452 heads with 2.08 / 1.74 valves, template porting, gasket matched, pushrod pinch opened up a bit and bullet nosed guide boss. They are going on a 413 which is why I retained the stock valves to prevent cylinder wall shrouding. It's also worth noting that these cores came off my work truck with a ton of miles on them. We did install new guides but reused the existing valves. As a result, the intake valves are fairly deep in the heads which is kind of a bummer. I'm sure that if I had replaced the valves and spent a bit more time on the port work, I could have gotten better results. However, I chose my stopping point and this is what I got.

Honestly, I really don't mind porting but if you consider the cost of valves, guides, hardened seats, labor, etc, it makes it really hard to stick with iron heads. That being said, I'm thinking a pair of Sidewinder or Stealth heads will be a better starting point for my future "budget builds"...

Nice job....... should run pretty good!

Notes on flow sheet....... ex with tube.
Any idea what sized tube?

Thats good #'s, As Dwayne said it should run good.

Sorry for the late response, I was waiting for confirmation. Testing was done with a 2" primary. I assume that's typical?

Nice work!..any pics?