Tunnel ram plenum spacer

Woody500 said
What do spacers do for a 413 Long Ram Intake. Do the torque and hp curves move up or down. Just for comparison.
I'm assuming Indy builds and tested them with a certain rpm response rate and range expected. What do you expect?
Is it worth it to change over at the track, so you can do back to back runs? Just for looks?

It's a little more plenum volume, and velocity with 4 to 1 tapered spacers.
probably raise or stay the same but just add a little power.
2 inch super suckers were the best tested on my engine. 2nd best was the super suckers flipped upside down lol