100x more efficient than a 10-71 roots blower. Old technology....tons of heat. Well played on the pro-charger. Any reason why u didn't look at a screw setup, like a Whipple?

Money really. I get a good deal on the efi and know the Holley system really well so it's easy for me to tune and far as the blowers just a preference. I think they are pretty even with the whipples as far as performance. They dont make the low end like the whipples but my big sled planes just fine with them so I'm not concerned with power at 2-2500 rpm. Motors are 540 ci also.

Sounds & looks great, did you get any speed #'s yet or just breaking her in ?

No final numbers yet. But I do know that 32 pitch 5 blades are not enough.

32 5 blades make a 38 go a hundred , so if your slip #s are good your cookin :)

water pressure was dropping off at high speeds, just got done welding an extension on my pickups. Heading to the lake on Wednesday with some different props.

What lake you using? Seems you would run out of room on Monroe quick!

Yes Monroe unfortunately and yes we run out of room very quick!!

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Have you been on Monroe before?