View Full Version : holly ultra hp feedback
itsabird
06-07-2009, 03:41 PM
o.k. carb guy,s need some feedback on the holly ultra hp 1050, has anybody ran one?
CamBirdRacing
06-09-2009, 09:31 AM
I have a HP950, standard flange and I love it.
kbartley
06-09-2009, 12:37 PM
Gas or Alky??? I'm kind of curious about the hp carb's myself.
Kris
oldandtired
06-09-2009, 01:23 PM
I noticed that Proform has come out with a 1050cfm 4150 series main body. Sweet....
itsabird
06-09-2009, 01:25 PM
gas, i have a old style 1050 dominator now, 8896, last weekend let me know that it's time for a change, so i am looking, the ultra has a lot of adjustability it seem, and i like that, but some times thing's like that can become a nightmare an that i don't need. thanks for the reply cbr.
jmarksdragster
06-09-2009, 01:48 PM
What is it going on? The Ultra metering blocks are "unofficially" made by BLP. It depends on whether the extra is worth the money difference. Be ready to lean the intermediate circuit.
ARUSSELL
06-09-2009, 02:41 PM
We used a 750 Ultra and took about 30 pulls to get it tuned perfect. It made 3hp more then a 750HP, and 1.5lb more. Out of the box it was a turd. If you dont have the dyno time or money, stay with the Standard HP, much easier to tune.
itsabird
06-09-2009, 02:48 PM
in the process of getting stuff togather to build a 540, but i have a mule motor 461 for tuning chassis, the thing surprised me, i think a better carb would help, can't buy but one carb, so buy for the bigger motor, and see if i can tune for smaller motor, could be a challange, but as long as i am dealing with good stuff i don't mind.
itsabird
06-09-2009, 02:52 PM
dang i type slow, not anti hp. and that the feedback i am looking for, the pro's and con's.
jmarksdragster
06-09-2009, 03:53 PM
With your BB, I would look for a 7320 2 circuit 1150. Metering will be close as delivered and save all the extra for the Ultra.
itsabird
06-10-2009, 05:01 AM
thank's for the replys guys, jmark i am leaning toward the 7320 for 461, was worried about any lean conditions with the two circuit metering, i see they have fairly small hsab, does this indicate they may have a starvation problem up top?
jmarksdragster
06-10-2009, 06:34 AM
I have a 1250 converted to a 2 circuit and no issues. An to the contrary, the factory Holley 3 circuit Dominators (not the Ultra with billet blocks) can run lean up top, they have idle feed tubes in the mainwells that can be restrictive in some cases. The 2 circuit blocks do not have the tube nor the issues that they can create. The smaller airbleeds are there to get the metering flat without the 3rd circuit. Also, the 3 circuit Dominators tend to be excessively rich in the midrange where the intermediate becomes active. This can create issues with loading up in the burnout. For bracket racing you want the carb on the lean side driving around at part throttle to keep the plugs clean, yet be tunable to what the engine needs at full throttle. The 7320 would work fine for what you want to do.
itsabird
06-10-2009, 08:11 AM
thank's for the info jmark.
itsabird
06-19-2009, 08:15 AM
jmark if you are out, got a ? about the 7320, it came with 95.s for jet front and back, both having power valve,s, i am thinking this would make the thing super fat, i want to block off the power valves, here's my hang, with the cfm, and this being a 2 circuit, would i hurt myself by pluging the power valves. in other words, go too lean, for this design.