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Old 09-12-2009, 12:22 AM
1970340t/a 1970340t/a is offline
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Default Blower

Hey guys do you guys know of anyone who makes a blower for a chrysler sb 340 the type that sticks out of the hood....
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Old 09-12-2009, 04:15 PM
John Kunkel John Kunkel is offline
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BDS can make up a blower kit.

http://www.blowerdriveservice.com/cu...ler-blower.php
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Old 09-13-2009, 04:53 PM
1970340t/a 1970340t/a is offline
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wich do you think would add more power to it a procharger or a blower from bds
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Old 09-13-2009, 07:39 PM
dodger1 dodger1 is offline
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Whichever one moves the most air per parasitic horsepower? (I think Rootes type blowers need more h.p. than centrifugal, but I'm not sure)
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Old 09-13-2009, 10:24 PM
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ehostler ehostler is offline
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Adding more power is all relative. How much power are you looking at adding? A proCharger is much more streetable. A roots style setup for hard racing will blow away a procharger, but don't even think about driving that on the street.
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Old 09-14-2009, 01:52 AM
DartGT66 DartGT66 is offline
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I really don't think so, a procharger has way more power potential than a roots. And why couldn't you run a roots plowmn engine on the street, at least I have run three different set ups without any problems. with a roots, the power addition is instant and really starts from off idle, while a procharger needs to turn certain amount of rpm to really produce some boost. Roots style superchargers are pretty unefficient, they heat up the air a lot and "intercooling" is more difficult than with a centrifugal style charger. BDS offers ready kits for small blocks, however I really donät like their modified offenahuser intakes much. Australian "Max Wedge" brand intakes are way better design and even lower profile.
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Old 09-14-2009, 04:38 PM
John Kunkel John Kunkel is offline
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Roots vane blowers are quite streetable.
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Old 09-14-2009, 05:35 PM
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ehostler ehostler is offline
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A roots style setup for racing isn't very streetable. I don't think I've ever met anyone that was willing to drive a 12-71 at 60% overdirve for more than a mile or two.

Now an 8-71 at 30% is a different story. That also isn't what I would consider setup for hard racing (as I stated before).
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Old 09-15-2009, 03:42 AM
DartGT66 DartGT66 is offline
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For most there isn't even any sence in running a 12-71 at 60% over. IT means about the same as running a turbo at 50 psi of boost. A 8-71 at 1:1 created 13 psi of boost in a 528 wedge. The more you add boost, the more the intake temps skyrocket with a roots style blower, and they don't produce any more power, just break and stress everything in a gasoline engine.
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Old 09-15-2009, 06:35 PM
dodger1 dodger1 is offline
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Quote:
Originally Posted by 1970340t/a View Post
------- the type that sticks out of the hood....
Guess that lets the centrifugal blower out of the picture, unless you want a hair-dryer sticking up. The classic through-the-hood blower is a Rootes (aka GM/Detroit Diesel style) blower. You might take a look at an Eaton blower - it's configuration is similar to the Rootes/GM although I believe the guts are more efficient (Lysholm screws?) You'll find them on some late-model cars such as the T-Bird SuperCoupes, Mustang Cobra, etc.
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