Which Carb

[R-WEST]

Still narrowing things down!!
Here's the setup:
76 F100 2wd shortbed – 3,500# with me in it; 0.030” over 390; Ed heads – 10.2’ish; Streetmaster;  Comp 282S; 1.75” primary headers; 3” collectors; 2.5” exhaust; C-6; 3,000 stall; 3.89 gears; 31” tires; Faron's Duraspark distributor & MSD Streetfire; strictly for cruising - I doubt it will see 500 miles/year.
Wondering which carb y'all would recommend?
I was thinking a Quickfuel "Super Street" 680 or 750 with downleg boosters and vacuum secondaries, or ?
Thanks.

[chilly460]

That's pretty light for a pickup with driver.  750 should run fine with that combo. 

[machoneman]

Smaller = better for cruising. JMO!

[Drew Pojedinec]

with me in it (I'm 160lbs) My 76 F100 longbed, 390/c6 etc is 3800lbs.  This has been checked at more than one place, one being the metal scrapyard where the scales are checked by an outside source for accuracy.

I'd say 3500 for a shortbed isn't out of the realm of possibility.

I like the Quickfuel carbs.  For cost their "slayer" would be hard to beat.
I had a QF735 and liked it.
I now have a Holley 4010 with annular boosters (650cfm) and I like it too, lil snappier carb, but otherwise performance is about the same.

[fairlanegt427]

if your just cruising id put a ford 2 barrel on it.  your not gonna rev that high with 3.89 gears anyway.

[R-WEST]

I'd say 3500 for a shortbed isn't out of the realm of possibility.

Oops - stupid fat fingers.  It's 3,600#, not 3500..     Had it on 2 different certified scales - they were within 25# of each other.

I have an '83 F150 shortbed that's 3,500#.

Never tried the Slayer series - hmmm, mebbe the 600 will work.  They're definitely less expensive than the super streets..  After spending all the $$$ on the valvetrain, it might be nice to save a few bucks on something...  The missus keeps saying "how much do you have tied up in THIS one?" (the '83 noted above is pretty custom) and I just mumble something about "oh, not too much..".  So far, it's been working, but she'll probably catch on when they turn off the lights and phone.   

Thanks for all the responses - this is a GREAT place!!

[My427stang]

I'd run a green basic 3310 750 vac sec.  They run good on the street.  At times, I like to switch to a blue accelerator pump cam (possible for you) and often with a very mild cam go UP in numbers on the PV (doubtful for you). 

Truth be told though, yours should match well out of the box

[bluef100fe]

Wow wish my truck was that light... Mine is 3850 with me in it full tank...ready to race... I weigh around 250 lbs.... Anyway I would look for a early 3310-1,2,3 or a 735 cfm cj carb... Or if you want new try a quick fuel but I don't have any experience with their slayer line of carbs... Good luck

[cammerfe]

For a completely different approach, find a Holley 6708. It's a 650 double-pumper. But the kicker is that it has a substantially big-'n'-little layout for primaries-secondaries.  The small primaries seem to give excellent 'throttle-snap' and, in addition, give good mileage. With a little practice you can develop 'toe-feel' to stay just below the secondary opening. It worked very well for me.

KS

[Drew Pojedinec]

Wow wish my truck was that light... Mine is 3850 with me in it full tank...ready to race... I weigh around 250 lbs.... Anyway I would look for a early 3310-1,2,3 or a 735 cfm cj carb... Or if you want new try a quick fuel but I don't have any experience with their slayer line of carbs... Good luck

Yeah from your threads I always wondered bout that.  Maybe the Flairside bed is heavier?

[bn69stang]

I would go with the bigger carb , jmo and im one to think that  735 s , 750 s , 780 s , are goo street carbs for mild builds . The quick fuel 780 would be my choice .. Bud

[Ford428CJ]

I agree with most of the guys on here... 735, 750, 780Vs would be a good choice for sure. I wouldnt go smaller then a 700 with what you got! Should work really well out on the street... JMHO