Yellow Bullet Forums banner

Twin blade carbs

1 reading
37K views 94 replies 36 participants last post by  jimmylauri  
#1 ·
Just wondering what the geneal opinion is on twin blade carbs. They look to be versatile with the dual pattern base plate. Has anyone back to back tested these against a standard 4150/4500 carb ? Are these strickly race or can thay also run well on the street ?
 
#2 · (Edited)
The only thing short lived is your non-existent experience with 3 Barrel carbs. You are criticizing a carb you know nothing about, in fact, evident in the posts you make on the net, you don't know much about carbs at all, or you wouldn't bad mouth the 3bbl or the twin blade. A properly tuned 3bbl is like any large carb, they drive good and make a lot of power. Properly tuned is the key, something you know little or nothing about. You would probably put a rim screw in the secondary link.


The Twin Blade is a high flowing low restriction carb that fits a 4150 intake.
 
#9 ·
I'm somewhat close to the twin blade carb guys. (Get'em Garage) One of the crew drove my car for three seasons. I haven't seen one run one on Kevin Willis' dyno yet though I expect that to happen soon. I made a new throttle linkage for my car so I can test one in an apples to apples test.

I'm sure they perform just fine. I would characterize the twin blade as a lot of carb in a small package.
 
#10 ·
I have much experience with both types, having back-to-back dyno & track tested them several times. (From 380 to 1450hp engines on all fuel types, single & 2x4, etc.) The TB's run great on the street as well.

Yeti is accurate (as always) when describing the importance of proper tuning and as boyracer says; the flow potential of the TB carb is greater than the small size & weight would seem possible.

When both are properly tuned and comparably sized; the TB's typically outperform 4-bbl's (due to physics).

The Get'm Garage facebook page shows many of the racers & engine shops running TB's.
 
#17 ·
My 1600 cfm twin blade.. built for what will be my Q16 fed SR20-headed, 598ci BBC. Thanks Mark Whitener and GET'M, can't wait to put fuel to this sucker!!

Image
[/URL][/IMG]

Image
[/URL][/IMG]
 
  • Like
Reactions: 1Azgerman
This post has been deleted
#23 ·
Looks like this one picked up a good bit of HP over the APD 1150. The entire combo was done by Joe at Sunset who claims great success with them and that he's seen 20hp gains from the twin blade....


https://www.yellowbullet.com/forum/showthread.php?t=2445498


But I'm sure 1,000 hp and 833ftlbs from a conventional headed 582 on pump gas is nothing for the awesomeness of you Ed.
 
#34 ·
Hold the phone. I know plenty of people who have kicked ass with that carb. I've got four friends that personally have that carb on their engine. All of them have said they picked up with it. One of my buddies with a 421 inch small block with a single entry plate in an all-steel 70 Chevelle went 5.28 with that carb. I know that doesn't sound all that impressive by today's standards, but when you figure that motor was built more than 10 years ago, I would say it's running pretty good.
 
#27 ·
AGAIN, Two of my friends and competitors took delivery of engines built by Joe in the last 2 months and both have APD carbs on them and both make north of 1200HP.

TRUTH and FACTS!

OK YOUR RIGHT AZZHOLE-----NOW GO AWAY!!!!
 
#29 ·
#31 ·
He's been booted from multiple other forums, I believe he's even been booted from here before under other name(s).




Them taking delivery of engines within the past two months has little to do with something that apparently is changing as we type. That thread is pretty self explanatory, as is Mark's comment, as is Sunset's FB page. Sunset has apparently seen a performance gain in the twin-blade carbs and is switching to them.



Whether it's a mono-blade or two 4-barrels, air/fuel is air/fuel. Some designs and more so some tuners are simply better at maintaining a more consistent ratio and thusly making more power. Personally, I've seen what Mark's handiwork can do on one of the fastest Ultra-Street SB's around, so I tend to listen when the man gives advice.
 
This post has been deleted
#37 ·
I ran 3 barrel carbs on a B/ED in Comp in the 70s, a 950 and a 1050. The issues with 3 barrels had little to do with the large butterfly, it was the primitive metering of the carb body. It had primitive secondary boosters, in fact the 1050 has just dump tubes not boosters, it had a secondary metering plate instead of a metering block, the primary metering was all wrong for midrange, etc. and was vacuum secondary. I went just as fast with a 4 barrel DP but no faster, in fact the 3 BBL MPHed a little better. The vacuum carbs were a lot more work to tune, and we knew very little about air bleeds and such back then. I didn't have a trans brake yet and needed the carb to work from idle. No one could tell me anything except take it off and put an 850 on it, had to work it all out myself. If I could have bought a 3 barrel 1050 version of a 4781 DP I would have.
 
This post has been deleted
#42 ·
So a four barrel is great, a single barrel is great, but a twin blade that outflows the four and has better booster signal and idle circuitry than the single and is now the preferred carb of the engine builder you referenced is just a "failed concept" because you say so even though you have never had one...


:rolleyes:
 
#39 · (Edited)
A friend has a BLP on his Ultra Street nitrous car. Just sold his 4500 or is in the process. Loves the twin blade. Ultra street nitrous guys swear by it 60 ft. Clean on the deck cold. Weight break too with it.