V8 350 loading up

Joined
Jun 25, 2003
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4,079
Location
Rixeyville, VA
I here people all the time talking about 350's loading up. what does this mean. also i've read when a 40 is converted to a 350 it is good to move the tranny up so the engine wont be so close to the firewall. if this is not done, should one turn away from a 40 or can it still stay cool being that close to the firewall. thanks
 
Joined
Jul 5, 2003
Messages
1,995
Location
Central, Utah
A 350 that "loads up" has the wrong or improperly setup carburetor. If tilted far enough or bounced hard enough or both, many carbs will dump excessive amounts of fuel in manifold effectively drowning the engine causing a stumble or even a flameout. Some carbs do just the opposite. If tilted or bounced allowes air to reach fuel metering jets causing stumble or flameout. The ultimate cure is fuel injection but a properly setup carb can do an incredible job. There is a thread discussing the topic of carb performance offroad. I'll see if I can find it.
 
Joined
Feb 17, 2002
Messages
64
There's a tech article by Woody( I think) about fixing V8 carbs for off-road.
 

TJDIV

UP of MI.
Joined
Jan 28, 2003
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2,061
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UP of Michigan
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www.roamwherever.com
I'm running a holley 750 on my cruiser and it'll "bog" out with too much throttle. I adjusted it the best I could for idle..(unfortunately I hit a few red lights).

Now, not sure why, but my idle adjustment isn't as good. I've been told to go with a 650 cfm. Any thoughts for a 350?? 650 or 750..(I don't wheel much)
 
Joined
Apr 22, 2002
Messages
64
all i can say is i never had good luck with holley carbs, edlebrock or q jet work well, but that's at vertical
 
Joined
May 15, 2003
Messages
303
Location
Vermont
I'd drop down to the 650cfm w/ vac secondaries.

Unless you plan to get radical with the small block or go big block, that 750 is to much for a stock 350.
 
Joined
Apr 20, 2003
Messages
34
i have an edlebrock 600cfm w/spring loaded needles,it does very well exept for extreme uphills it starts to flood if i let off the gas. it runs great rock crawling.
 

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