Here are some photos of the Summit carb sitting on the Tbird Mummert intake. I was taking measurements and trying see if I have enough hood clearance. The adjustment nuts for the float levels has me thinking about air cleaner fit. Nice carb. I like the new idle circuit adjustment locations and the fuel level sight glasses which are big enough to see easily.









57 Black Tbird 312/auto

I think the Summit carb is a copy of a Holley. I'm not sure of the model number but there was a Holley that was similar looking to the Autolite.


Lawrenceville, GA

Does Summit sell a stack of those top plate gaskets in one package? Seems to me that when I had one of the "other" versions of that "new" carb, they were a royal PITA to keep around.

Or do I have this Summit carb confused with another that seals like an Autolite?

Building another set-up, I think I'd be prone to try one of the 600cfm "Slayer" carbs...

http://store.summitracing.com/parts/qft-sl-600-vs

 
 Steve Metzger       Tucson, Arizona

Thanks again Ted. Summit has their carb on sale today so in the interest of financial responsibility, I ordered one this morning. I need to finish the front disc brake install and then get the new Mummert manifold with carb done after that. Been cold here this week, 34 degrees in the AM, so it takes awhile to get my old bones freed up enough to turn some wrenches.

57 Black Tbird 312/auto

To date, I’ve had good success with the Summit branded carbs.  Like any universal fit aftermarket carb, they are ‘universal’ and may require some tweaking to work satisfactorily on a given engine.  That just goes with the territory.  On another thought process though, the Holleys are noted for their excellent wide open performance but some of the other carbs out there do make better daily drivers without as much fuss.

 

I find quality issues even in the new Holleys which makes any new carb suspect when being run right out of the box.  After running a quick test of one of the new Demon Street Fighter (DSF) carbs on the dyno mule, I find that this may be a nice alternative carb for the Y engines.  And zero issues with the DSF carb that I ran in its out of the box configuration.  The smaller sized primaries makes the DSF carb lowend throttle response quite crisp and the adjustable  secondary flap makes this carb suitable even for the smaller displacement engines.  Here’s a link to the Demon Street Fighter carbs.

http://www.demoncarbs.com/1900.asp 

Lorena, Texas (South of Waco)

Ted, thanks for the link. The Summit carb (flat top) is one I have been looking at. After reading the attached article in the previous post that thoroughly evaluates that carb, I have some concerns about consistent build quality. This is the carb I am looking at also. Any thoughts?



http://www.summitracing.com/parts/hly-0-80783c

57 Black Tbird 312/auto

Mark.  And here’s the link to the carb testing article that was published in Y-Block Magazine.  Both of the Holley model 4010 600 and 750 vacuum secondary carbs were tested on the 312 dyno mule.  The carbs in question are #9 & #11 on the list.  Specific HP and TQ numbers are at the bottom of the article.

Carb Testing on the Ford Y 

Lorena, Texas (South of Waco)

I always ask myself "what do I want to do" before buying any speed equipment for my vehicles. If I'm looking at wide open throttle it's entirely different from going to cruise inns. I like what Ten and John put up to help in my decisions. I'm an under 3500 rpm guy with my "Y" so I look to smaller barrels for the higher torque numbers. I love the look of 3-2's and I am figuring out how to do it using Rochester 2GC's rather than the Fords or Stombergs. The trans comes into play also............Good Luck

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Thanks for curing my morning brain freeze. John Mummert's carb test, not Ted's. Looks like decent choice at a good price. I also saw on the same Summit catalog online page replacement Holley type 2 bbls for the FE 3x2 set up. They are also offering a new 3x2 intake for the same. Very pricey but I don't remember many aftermarket 3x2 intakes for FE's due to the good unit made by Ford over the counter.

57 Black Tbird 312/auto

Here is John's dyno test article

marv

http://www.y-blocksforever.com/forums/Topic57127-11-1.aspx?Highlight=summit+600