I have a 452 (400-with 440 crank) stroker engine with mopar stage 6 heads-(stock) and a comp cam -270 duration with 470 lift with headers and it has two Edelbrock 650 CFM thunderseries carbs on it.
I want to know waht I should use for primary and secondary jetting and also what metering rods and the step up springs should I use?????

The carbs are stock calabration;

Primary Jets-.095

Secondary Jets .098

Metering rods .068 x .047

with orange step up springs

You can post here or send me an e-mail to; glr7069@ptd.net

I've found the stock calibration to be very close. My buddy runs a 65 belvedere with a similar combo (906 heads though). We have gained nothing going richer.
Doug

Thanks Doug!...
anyone else?

I agree with DVW, start with the stock jetting. It usually is very close with just some minor tweaking. Dave