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540 BBC, B&M Megablower, 2 x 850 Mighty Demons, 900 - 1100.
I've had it as low as 600 but really, anything below 900 it wants to start with that "blower lope" or surging idle.
Lots of guys think that sounds cool but I find it a PITA to drive like that
 

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800-1300 then 800-1300.......
 

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461 BBC.246*/254*@.050"....13% OD 8-71....7"Hg at 900-1000 rpm in park,same in gear with a 3500 stall converter.
 

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515 Posts
1000-1200 here
 

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352CI Small chevy, 8-71 BDS Air-Loc, 1 to 1 ratio, 16% boost, 9 1/4 to 1 ,AFR 227, E-85 with (16) 160# injectors, Big Stuff 3, Enderle Big and Ugly 5" blades with progressive linkage idles at 1,150 to 1,250 on street, makes 830 to the rear wheels and 1,000hp at the flywheel.
 

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1050 - 1200 - BBC 427 6-71 mooneyham 20% Under Driven 2 625 AFB's comp cam 314HR running solid lifters 110 LS / 314 Duration .612 Lift locked at 31 degrees on the timing.
No surge just changes some when it warms up.
 

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Mine has 2 Quick Fuel dominators, 10% overdriven,14psi, 10-71 with Teflon on a 496 Hemi @ 31 degrees. 1200-1300...any less and it starts rolling.
 

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I had 14 blown cars in 50 years,never had one idle higher then 800 in gear.Some idled at less then 600...Oldhead
 
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