I am building a 350 for my jeep with 10.2 compression, ported and polished heads, a X-treme 4x4 cam with 226 degree's on the intake,234 on the exhaust and a weiand X-celerator intake with a removable divider plate. Should i have that plate in or out?  

Ok I answered it my self, on the desktop dyno it made 482 hp-492tq with the single plane and 453hp-489tq but it comes on way lower in the rpm som it's a toss up on witch way to go.  

Ok I answered it my self, on the desktop dyno it made 482 hp-492tq with the single plane and 453hp-489tq with the daul plane but it comes on way lower in the rpm som it's a toss up on witch way to go.  

If you are going to run a one inch open carb spacer, keep the divider. If not, lose it. You want the two sides of the carb to mix with the two sides of the intake.

Try a one inch open spacer on your dyno program with and without the divider plate and see what you get. Post the info here.  

I just have the dyno basic so there is no place to put in the spacer. I can post all the specs if someone wants to run it on the advanced version.  

for hole combo spacer with plate in your case...  

It's a Jeep, not a drag car. So you want as much low and midrange torque as you can get.  It's not worth the low end losses to shift the torque curve up with a single plane and open spacer.

So a four-hole spacer and leaving the plate in would seem the way to go.