I am in need of a carburetor for my 302. It has an aggressive cam with unknown specs, Victor Jr. heads and intake, and headers. The engine will not be in a daily driver, but wil be driven accasionally and to the track to race it. I was thinking I need a 750 carb but I am not sure, and I don't know which brand I should use. Any suggestions or is anyone running a similar setup?
600-650 is a better choice for your build. Holley 670 street avenger or a list 80783 650 vac secondary are two good choices.
You know, I think I have outgrown my carb...I might be willing to sell it so I can upgrade. It would come with edel 600 (1406) and carb tuning kit. I need to move up to a 750-ish carb.
I currently have a 600 cfm Edelbrock, but I don't thimk it is the right carb for this setup. Does anyone run a 670 Street Avenger carb?
At least a 650 double pumper with flow like that...cam specs would help here...what trans and converter and gearset are in the car?
I would agree with you Tim but Vic jr (3500-8000) package will be pretty stout on the street. The double pumper would be better suited for the track, jetting and smaller shooters is what should work on this package as long as he has a converter and cam! Also will need a gear to get into the powerband! Richard
You could try one of these http://www.mustangandfords.com/techarticles/mufp_0708_car_gasoline_ethanol/carburetor.html I know it doesnt sound reasonable I just thought it was cool maybee it is something we all might want to look into in the future.
I guess what I meant to say is the 750 vs is a very FORGIVING carb,and a bit smoother on the street.I do agree a dp is better for et's(depends how hard he wants to chase down that last tenth or so).Also agreed that the gearing needs to match,but all he's asking about is carb choice.I've had a 750 vs on a basically stock engine as well as a modified one.Worked well on both engines,although the jetting/sec spring was fiddled with on the modified engine to pick it up a bit.I just felt it(the 750) would be a good starting point.
I had a list 3310 750 Holley on the 5.0 in my Ranger till a month or so ago. It was too big for it and the motor is basically a carbed Explorer motor. Stock short block, F4TE roller cam, Ford A321 intake, 1.7 Cobra roller rockers, ported E7 heads. I replaced it with a 570 Street Avenger and the difference was night and day. I tuned the 750 as best I could for the motor, but the 570 out of the box was perfect. The 750 worked fine, but the difference in accelleration is huge, the 570 is far and away a better match for this motor. Smaller is better when it comes to carbs. The only way to tell if you're leaving power on the table with a "too big" carb is to try a smaller one first. I also had a 650 DP Holley on this same engine a few years ago and it too, left something to be desired when you planted your foot in it. I switched to a VS 600 and immediately felt an improvement then too.
The victor jr heads and intake with what other components? We can't recommend a carb without all the info...compression, cam specs and trans as well as the rear gears?
The car had this motor in it when I bought it, so I do not know everything about it. I don't know the exact compression ratio but it will run fine on 89 octane. I don't know the cam specs but it is pretty aggressive w/ a noticeable lope at idle. It has a C4 auto with a reverse manual valvebody and a small stall, and it is currently running 3.55 gears but will be getting 4.56 gears once it is out of my daily driver.
