Rocker Decision

AJ/FormS said
That much, Eh?

It is just my best guess at this point. I don't have any 'solid' (pardon the pun) data to say how much to subtract from the solid cam's advertised duration, but I know I need to do something. As an aside, it has occurred to me that part of the reports of solids running better for a lot of guys is better low RPM torque due to higher DCR from a shorter' effective' intake duration. (But we'll never know for sure...)

AJ/FormS said
My main concern is always that JoeMopar (not his real name,lol) doesn't stick a 292/108 in his 8/1 teener,lol, and to explain,using examples, why that is a bad idea; including that it's a PITA and expensive mistake to make.
Thanks for disclosure.
If there is a next cam for my combo, it will be a solid. I have been itching for a decade to run one, but my 230FTH won't die, daymnit.

Yep, I agree, you work these numbers out, as it is what you can do on paper to avoid the big mistakes, either too high or too low. I think I have mentioned my 300 duration cammed Opel 1.9L with 7.6 SCR... works out to the upper 5's for DCR LOL. DEADSVILLE below 3700-3800 RPM... only worked for rallying (to some degree) since you could rev that motor to 8k all day long. You can't recover like that on a stock 318 bottom and heads.

Wyrmrider said
nm
take a crack at this cam on left Direct Connection 260 on right
265 @.004 284
256° @.006 269
246 @.008 260
202° @.050 212 ---newer grind may be 221/228 some were 221/221 over the years
120 @ 200 115
64 @ 275 DC 260 is 42

Help me a bit here.... the left side numbers are for one cam, like a .904 cam, and the right side numbers are for the DC 260 cam?

What I get from both sets of numbers is that one may have to subtract MORE than 10 degrees from advertised duration for a typical .015"-.018" lashed solid cam. Is that where this is heading?