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Old 08-01-2005, 03:33 PM
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BBC Blower and characterisic idle surge

Hi Folks,

I'm just dreaming at this point...

I recall an announcer at the drag strip talking about the idle surge that (according to him) is "common to every Blown Big Block Chevy".

Is this true? Of EVERY blower?

There is a B&M blower complete w/ carb and bird-catcher on that the seller is asking $1800.00 for. Seeing as how I am already shopping for an intake and carb (my 454 was on propane) I may even be able to convince myself that the additional cost could be "justified" ... it would just take a little longer to save for.

I guess the thing that I'd like to know is: Is a blown 454 /TH400 automagic combination "streetable"?
Would it "behave" at idle, or would it be a strain on one's nerves (and brakes) sitting at a stoplight? What kind of stall speed would a guy need?

I understand that lower CR is better ... what 8.5 max?
I have recently agreed to purchase some 98.5cc heads, but the same guy has some 049/781 (113.0cc) heads as well. Would they be a better choice?
Forged pistons would be a "for sure" requirement?
OK on a 2-bolt main?
What kind of camshaft would you use with a blower?

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