anyone have a BG Speed Demon??
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Joined: Feb 2002
Posts: 143
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From: NY
anyone have a BG Speed Demon??
i'm thinking of getting one just cause i like the way it looks.but I want to know how it performs as appossed to a holley double pumper. how is it to tune? basicly how are they all around? if you have any pics that would be cool to check out too...
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Joined: Apr 2000
Posts: 5,321
Likes: 4
From: Northern CA.
Car: '82 Z28
Engine: 350
Transmission: TH400 4,000 stall
Axle/Gears: Currie 9", 4.56 gears
I've got a 750 Speed Demon on the *gasp* 305 
It runs better with that on than the Holley S/A 670. Throttle response got better and it sets me back in the seat more Right out of the box it ran awesome but a little on the rich side since it's for a bigger engine. It's actually going to end up on my 350 but for now it's stuck on the 305. Easy to work on, looks cool, nice build quality.
It runs better with that on than the Holley S/A 670. Throttle response got better and it sets me back in the seat more Right out of the box it ran awesome but a little on the rich side since it's for a bigger engine. It's actually going to end up on my 350 but for now it's stuck on the 305. Easy to work on, looks cool, nice build quality. 
Joined: Oct 2000
Posts: 2,112
Likes: 0
From: Orange County,NY
Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
Same to tune as a Holley...though for me it seems to hold the tune.
Last edited by onebad82z; Oct 17, 2012 at 02:55 PM.
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Joined: Nov 2000
Posts: 1,760
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
The demons are great. The only thing i'm finding that sucks about them is that as of now, BG supplies very few tuning parts. My Demon gets more Holley everyday...
Eric
Eric
Joined: Oct 2000
Posts: 2,112
Likes: 0
From: Orange County,NY
Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
Yes..all service parts are interchangeable with the Holley parts.The only pieces that are not are the hard parts..fuel bowls,main bodies,etc.Thanks for the compliment on the VC's..I am thinking of swapping to a set of fabbed aluminums.How is the GTA coming along??I am starting to see quite a few new third gens appearing around town lately
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