CLASS RACER FORUM - View Single Post - What are the best casting double hump heads?

Dwight Southerland · 08-25-2015, 09:45 PM

The best flowing "untouched" heads out of the 39 sets I have tested were particular 462 and 291 castings. I did not flow 461 heads because they were not legal on my combination. I flowed 462, 291, 292, 186, 041 and 492 castings. 186 and 041 always showed good numbers. You had to be picky about the 462 and 291 castings.

For what it's worth. I'm sure there are others with more data and experience.

08-25-2015, 09:45 PM	#4
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,980 Likes: 53 Liked 724 Times in 177 Posts	Re: What are the best casting double hump heads? The best flowing "untouched" heads out of the 39 sets I have tested were particular 462 and 291 castings. I did not flow 461 heads because they were not legal on my combination. I flowed 462, 291, 292, 186, 041 and 492 castings. 186 and 041 always showed good numbers. You had to be picky about the 462 and 291 castings. For what it's worth. I'm sure there are others with more data and experience. __________________