6.1 Carb conversion kit.

Fifefivem - You're doing the smart thing - I provided Joe OCone with a lot of dyno test data on the Modman so he knew exactly what the issues were - so he could design a better mousetrap.....and he has.

For what its worth...the attached sheet shows the difference between the Modman and the 5.7 Edelbrock dual quad.

Not only was this the best performance I could get from a Modman....but the 5.7 Eddy had a port mismatch on my 6.1 heads!!!

YET STILL....The Eddy out performed the modded Modman.

Eddy is the redline
Eddy with spacers is the purple line

Modman is the blue line :(

Same dyno, same weather, same carbs, same set up, all tuned for optimum peak HP.