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g71rs
03-13-2007, 09:20 AM
I bought what was supposed a 750 speed demon off ebay seller...I checked the butterfly sizes 1.75 and the 8 on the carb main body...so it was listed wrong and now i'm stuck with a 850...the carb was jetted down to 70 primary 74 secondary...stock jets are 85 primary, 93 secondary
Is this going to be too large for engine specs, street use


Engine spec and car 71 camaro

SBC 400, th350 2800 stall, 411 gears, 26 tire
Cam hydra roller
rpm range 2200-5900, advertised duration 291 in 311 ex duration @.050
in 235 ex 249, valve lift .521 in 507 ex, 107 lobe sep
Scat Crank internal balance 3.750 stroke 6 Rod Forged Pistons +.040 Scat I-beam 6 Rod 4340 7/16 bolts
je pistons 11 to 1
Dart Pro 1 alum head 200cc intake 2.02 /1.60 valves 68 cc just blend bowls, machined chambers, matched intake
1.5 crane alum roller rockers
Victor Jr Intake gasket matched...alum
Msd Bullet Distributor
Msd 6al BoxElectric
7psi holley fuel pump
1 headers

Tech @ BG
03-13-2007, 10:04 AM
An 850 is going to be too large on a combination like this. Your stall speed may help you, but you're most likely not going to be happy with the way this carburetor runs. It will most likely be a little rich at idle, not as responsive as a smaller carburetor would be, and potentially go lean at WOT.

Shaker455
03-13-2007, 06:51 PM
g71rs,
You have a PM

sunkistcamaro
03-14-2007, 04:23 AM
I have a BG 750 Street Claw for sale, I haven't listed it yet.
If you're interested I'll hold on to it for you.

g71rs
03-14-2007, 08:59 AM
I have a BG 750 Street Claw for sale, I haven't listed it yet.
If you're interested I'll hold on to it for you.

sent you pm

g71rs
03-14-2007, 08:22 PM
g71rs,
You have a PM

sent you pm

g71rs
03-19-2007, 08:35 PM
listed on ebay if anyone is interested
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=180098152958

MonzaRacer
03-19-2007, 08:52 PM
Relist it.
Talk to shaker455.