hello,does anybody run a comp cam CRB 268H-10 in a 440

[moparnico]

does anybody run this cam in a hp 1969 440 engine with the stock 906 heads?

[PRH]

I've run that cam in 340's, 360's, and 383's.
I think the short seat timing might result in some detonation issues if it's a "correct" 69 hp440.
It would run fine though, should have real good low end TQ.

[moparnico]

I've run that cam in 340's, 360's, and 383's.
I think the short seat timing might result in some detonation issues if it's a "correct" 69 hp440.
It would run fine though, should have real good low end TQ.

What did you mean with detonation issues?

[BSB67]

The short cam timing will increase cylinder pressure causing detonation.  Some call it "ping", some call it " spark knock", some call it "rattle".  It's a distinctive knocking sound that comes from the engine during acceleration or under heavy load like going up a hill or pulling a trailer.

The reality is that there are almost no original 440s around, and almost anything rebuilt has low compression pistons in it.  If you don't have a detonation problem now, you'd probably be okay.  

A simple cylinder pressure test would answer the question.