Cruiser Carb recommendation

[Riderjeff]

I'm probably over-thinking this, but I'm looking for a carb recommendation. My T-bird cruiser project engine is essentially built per the suggestions here:

http://fepower.net/simplemachinesforum/index.php?topic=7893.0

.040 over Mirror 105 block, zero decked
C3 390 crank, C7 rods w/ARP bolts
C4 heads with stock size valves, springs to match cam
L2291 pistons
Lykins Hydraulic Flat tappet Cam
Streetmaster Intake
probably FPA headers but I haven't bought 'em yet...
Rebuilt C5 distributor, 15 degrees mech. adv., 10 degree vacuum advance
Stock MX trans & converter, 3.0 rear

Obviously no race aspirations, just a sweet cruiser.  Want a reliable low-fuss carb that will match the rest of the package.

Been thinking about these:

Summit 600 cfm (essentially a modernized Autolite 4100)

QF HR-680VS

OR just use the rebuilt 4100 1.12 C5SF-A I have in the garage.

Your thoughts?

[gregaba]

I have run 3 of the summit carbs with no problems. Kind of like the Fore 4100 a simple easy to tune for cruising and have had no problems with the.
For racing or hi performance I prefer the Holly.
Greg

[Thumperbird]

I have a pair of QF Slayer 600CFM vac. secondary carbs on a 445, fairly easy to setup, I like them.
Just be sure to go over the carb (any carb) before install and make sure everything is mechanically very smooth, plate edges nice and clean seating well, transition slot openings identical and minimal all around, etc..
They make a 680 in the Slayer series.

[Cyclone03]

+1 on the QF Slayer carbs, setting are really good for a nice driver

[Hipopinto]

I have a summit 750 Vacuum secondary on my 428

Right out of the box it worked really well

I would suggest one to anyone that asked

Good luck
Dave

[Falcon67]

SUmmit or the Ford.  The "Summit" units are Holley 4010/4011 items that work well on the street. 

[wayne]

Its not on your list but a edelbrock is a good street carb

[My427stang]

So, it pains me to do this LOL because I always push AED double pumpers (when appropriate)

However, that vacuum secondary Quick Fuel is far and away the nicest carb in your list.  The Summit/Holley likely just fine, and same with the 4100 if it's a good one, but the Quick Fuel will likely make more power,  run better and easier to find parts later on.  They are well thought out carbs and really nice.

In fact, I'd likely look to Brent Lykins to see what he can do on a price of an appropriate Quick Fuel too.

[Riderjeff]

Thanks for all the feedback everybody. This forum is really great!

[DubyaTF]

    If you're looking at the Quick Fuel HR-680VS, check out the BR-67258. Basically the same carb but in 770cfm with all the same features as the HR-680 for 130 dollars cheaper (Summit prices).
 
    Your build is eerily the same as mine. LOL! C7 block, C1 crank, ported C8AE-H heads, C7 390 rods with ARPs, 2291 pistons, XE274H cam with the ported Streetmaster with the Brawler 770 carb and FPA tri-ys in my truck.

[Riderjeff]

Can someone give me a quick comparison of the various Quick Fuel Products: Brawler vs Slayer vs HR?
Some seem pretty similar, and it's hard to find an explanation of how they compare or are different.  I see some are mechanical secondary vs vacuum, but it also looks like some duplication...

[DubyaTF]

  Try calling their tech line. I think main differences you'll see is quality of the castings of the main body, bowls and whether or not the base plate and metering blocks are billet pieces. The majority of these models all run down leg boosters, same style primary and secondary fueling circuits, 4 corner idle, glass bowl sights etc.

  Brawler is probably more set for a value cruiser carb. Brass floats, no extensions on the secondary jets, chrome finish (if chosen) but not polished, coated paper gaskets vs non-stick. Little things I've noticed so far. But it's got a lot of good stuff included that would have been extra from another brand. Above mention bits plus electric choke, externally adjustable vacuum secondary and the Ford kick down hardware with my model.

  My truck's a cruiser so I'm super happy with the 350 dollar Brawler. Lots of features for the money. Nothing wrong with grabbing a 4150 or 60 off the interweb postings and rebuilding/ upgrading it either.

[Drew Pojedinec]

Make sure to record the call to the tech line.... it’s worth it to relisten over drinks later

[My427stang]

A long time ago, 2007-ish, they told me they didn't use emulsion in their carburetors.  Not emulsion tubes, just no emulsion, it was all air and fuel mix.....

I used a Brawler on an iron 461 and a HR780 on a Trick Flow, both were nice carbs, not sure the internal differences.  The Brawler was a double pumper, HF was vac sec, and the Brawler had black metering blocks LOL

Give Brent a holler, Scott Perkins is a carb guy who can prep it for your application, you may find out the cost is worth it.

[DubyaTF]

Make sure to record the call to the tech line.... it’s worth it to relisten over drinks later

   How's that gonna help the OP make a better informed decision on a carb? Maybe you have some sage advice to contribute?