i got a 250 crossflow, i want to know what is the better carb?? what kinda horse power can they handle and cfm ?? and in general wich one do you think is better ??

the standard webber flows 420cfm stock on a XE/XF but you will gain a little fuel ECON by using the webber over a holley thats about it, holleys are for performance and can be a pain to keep in check.

its going in to a 4x4 paddock basher, so will the weber flood easy as mine dosent have the tank return option.... would you happen to know what kinda horse power the weber will make?

Un modified the holley will flood worse then the weber. No tow ways about it.

Go floatless, neither will flood until its sitting on its side and even then it will probably still run if the conversion was done right.

The weber is far more tunable then the holley ever will be. Most people will tell you the holley is better as they believe just changing jets will get the tune spot on and it's misguided s**t.
The simple fact is these people don't understand the effect emulsion tubes, air bleeds, idle jets, booster venturi, power valve orifice and opening pressure and even accel pump shot have on the tune. Even more so they don't have the slightest clue as how to tune these items.


Yes i know some of those are changeable on the holley but the changes are very a*** and in some cases impossible or very very difficult to properly reverse the change.

thank for that, just one last thing how much hosepower will the weber 34 adm flow?? cause this is a back yard build and i think the motor will produce close to 250rwhp so i need to know if one will be efficent or will i have to shop around for a duel carb manifold...

Whats the word on these.. anyone used one?

http://www.aussiespeed.com/index.php?op ... &Itemid=31

You could try this.......had 10:1 CR, P&P head, Crow 3/4 race cam, roller rockers, modified fuel pump, and the 600 Holley was modified too.....went very well.

 

 

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