Thanks guys for all the suggestions.

With the RPM we will be running I would think the larger plenums of the Indy, or the old Rat Roaster would probably give an advantage over the intakes with smaller runners.

With my wedge I launch at 5700 and shift at 7600 (4-Speed)with a 4.86 gear. This past week I installed a 5.00 gear and we adjusted 4 link to tame the wheelies.

Idle is and street manners are very low priorities as this will be a high winding race only setup.

What are your thoughts on runner lengths and plenum volumes for these intakes? Does anyone have any links to flow data for the INDY or Stage V intakes? Stock and or modified?

We are allowed to use spacers to increase the volume of the plenum. On my wedge I am running s STR15 with a 1/2 plenum spacer and 1" carb spacers under the 800 cfm eddies. It seems to work well with this engine.

-Dave