Carb Size

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Apr 3, 2015 | 02:32 AM

#41

Marx3

Registered User

Joined: Dec 2012

Posts: 114

Quote:

Originally Posted by Oldsragger

OK, thats good then, guess i should Just get an Electric choke and just swap it over the bbo And hope for just turnkey startup without any other problems. I dont wish to modify it if its not nessesary.. Maybe i need to take a gasket swap again, cause i can see the gasket are a little "wet" that part sticking out from carb..Im not sure if its normal. 2 yrs ago from last gasket replace. Will check the bolts if its tight enought again.

If the cam in your BBO is not "big" ( making less vacuum in idle ) then it will fire right up. You can post the carb ID number? stamped vertically on the drivers side right over the secondary throttle shaft.
An 800 cfm Qjet can deliver plenty of air to feed a BBO. Lots of people run 800 cfm Qjets that support 5-600 hp. You just have to make sure you jet is right, so there is enough fuel in the air :-)

Apr 3, 2015 | 10:07 AM

#42

olds 307 and 403

Out of Line, Everytime😉

Joined: Dec 2006

Posts: 10,083

From: Melville, Saskatchewan

You can try it as is. If it runs shitty cruising around, pull it apart, go up one primsry jet size and replace the gaskets while you are at it.

Apr 3, 2015 | 02:18 PM

#43

Oldsragger

Registered User

Joined: Feb 2013

Posts: 566

From: Norway

OK, Well i Will Just try the edelbrock 750 first then and Will experience how it will act.. Its not long time since i replace it with new gasket and clean it up... If it will work **** i will try the q-jet like it is before another upgrade.