[quote=Cab_Burge]Try it and let us know your results :up
Good luck, it looks really good [/quot


\ It picked up a tenth in 1/4 .......8.90 @ 153 Thanks for sharing that information!

a tenth at that level is nothing to sneeze at.

This is the top finished on an Indy intake

Do the shear plates have the ribbing to shear off the fuel from the walls?

I don't know exactly as to what is going on, whether a boundary layer is being created or whatever. Some spacers will have a smooth tapered surface, others are machined with steps. Everyone has a different way of thinking. In many cases, I believe it comes down to what might be easy to machine, or as silly as it sounds, what is visially appealing to the purchaser.

"It appears the anti-reversion plates have a trough around the openings to reverse the direction of flow."

Most that you see will have that trough or groove that you are refering too. I have been meaning to test without it, or adding a pocket instead

The other ones posted look like a diffuser style with a tapered opening. A pressure recovery like the downside of a venturi.

I think Darin Morgan described them best, by refering to them as transition spacers. A means of transitioning from the carb to the manifold

Does that summarize the differences?

So there were more changes than just the top of the manifold?


We made these tapered plates for tunnel ram set ups last year. Did a little testing on the Stratus and saw some improvement but did not have time to fully flog on them. Maybe on the dyno one day.