I am looking to build a 800hp gen 2 Hemi and waslooking at the Indy 426-1 heads. I have used the 440-1 and 440SR heads in the past on builds. What "pit falls" will I run into with the 426-1 heads? Will stock type intakes work on these heads?
They are heavy for one, they are an inch wider when assembled on an engine over stock heads, they are taller, and in unported form, not a lot of fun. Maybe a little over 600hp on my 484 Hemi....Went 10.7 on my street/strip car.
I had a set. I ran them for years. I was never impressed with the flow numbers or the performance. I ended up porting them just to get 398cfm out of them, but the big valve Hi-po heads just kill them. We will see what my 605 runs with those on it, but flow wise, How about 458cfm....And they are a lot lighter.
Should be interesting.
