Proform 750 Street Series #67208 (vacuum seconday) 4BBL info.

[b5blue]

  I'm starting this topic to cover the Proform 750 Street Series carb. There isn't much detailed info on this one out there. (Much more info on the mechanical secondary one, not what I'm looking for.) I'll add here as I nail down details.

[303 Mopar]

 

[firefighter3931]

Here are the basics Neal :

http://proformparts.specialtyauto.coresense.com/product-exec/product_id/874/nm/PROFORM_reg_STREET_SERIES_CARBURETOR_b_750_CFM_b_VACUUM_SECONDARY/category_id/182

Like the Quickfuel vac secondary carbs ; the secondary opening is controlled by a screw adjustment. Different from the typical Holley vacuum secondary which uses springs like your old 6-pack setup.

From the factory it comes with :

-6.5 power valve
-72/78 jetting
-70 idle air bleed/31 high speed bleed
-33 shooter on the primary discharge

* I'm assuming it has a 30cc accelerator pump

Let us know how it's running when you get it out for some testing 



Ron