Originally Posted by ZIPPY
Originally Posted by Quicksilver440
Originally Posted by ZIPPY
Originally Posted by Brad_Haak
I'd try a Proform / Brawler "950" race carb w/ 1.45v x 1.75t simply because they're more affordable and more tuneable.


Liked that one so much I bought a second one of them for later tunnel ram use.
All it needs is the transfer slot holes tapped and restrictors/jets added.

Brawler also has a street carb marketed as an 850DP with electric choke, but the primary venturi measures out smaller than standard.
Bought a main body of one of those to build up later for my C body. Was surprised to see that. It seems like a sound idea.
hopefully get a chance to try it.

For an 850, the BG annular booster model I had was so much more responsive than the two regular 4781s that I had,
it killed them both so I sold them.


Zippy…super interested in a electric choke carb with smaller venturis…seems like a great idea. I’ll check that out!


I must apologize, I didn't remember the brand correctly. Your reply made me go check.

I thought it was a QFT Brawler, but it is actually a QFT Proform. Pics below.

I'm coming up with 1.465(P) and 1.554(S) using basic dividers and a dial caliper.

Proform doesn't advertise the spec (that I have been able to easily find,anyway), whereas Brawler advertises 1.570 P/S.
If the Brawler marketing is correct then the carbs are definitely not the same in spite of how badly I might mix them up.

https://www.holley.com/products/fuel_systems/carburetors/street/parts/BR-67214
https://www.proformparts.com/produc...odel-850-cfm-mechanical-secondaries-type













Zippy..you got me thinking and researching those proforms…especially the mainbody you listed.
Found this awesome chart that includes venturi sizes of various carbs…thought I would share.

https://www.quickfueltechnology.com.au/content/Quick%20Fuel%20Carb%20Size%20with%20details-AUST.pdf