Like the title says I'm looking for a place that modifies holley 2 barrels for blow thru. I've done some lower hp v8 stuff but always a 4 barrel. I feel that a 2 barrel may be very hard to get right.

 

There's no more difference modding a 2 barrel over the 4 other than the carb is half modded of a 4 barrel.

 

Cost pretty much remains the same a well

 

Except for the pressure drop difference with the 2 bbl vs the 4 bbl, the calibration should be the same as the front of a good 4 bbl blow thru carb.

Tom Vaught

 

You should be able to pull it off yourself. I have done a holley 500 and 350 two barrel with the same mods as a four barrell. Mine isn't making big power but it works very well up to 30+ psi.