Can you explain why you don't care for the 830 configuration please ?
I haven’t run one of those on anything in ages.
The way I remember them is....... they just weren’t anything special.
Some other stuff I tried worked a little better.
So, based on those experiences, if I’m buying a carb....... I’m going to buy something that’s “hopefully” a little better.
But that really has no bearing on how good one would work on your engine......especially if you already own it.
If you own one, just try it.
A couple years ago I had a motor on the dyno and the owner had brought several “fancy” built from scratch carbs to try on it.
All were the new type bodies, one had the billet 1.600 x 1.750 main body outfitted with some special annular boosters, all had billet metering blocks, etc.
None of them had great fuel curves, and the balance between part throttle and wot was not very good either.
I had brought my dyno mule built-from-scratch HP950....... “just in case”.
It was obvious it was going to take way way more time than we had to even get one or two of them really dialed in........ so we mildly tweaked one that was “closer” than the others to see about getting a number from the motor.
After some playing with the timing and spacers, it put up a pretty decent number.
When we were basically done for the day, I put my HP950 on to get some kind of caomparison to a known carb, which is really nothing special in the HP making dept.
I used the same spacer and timing we were running with the other carb(which was a 1.520 x 1.750 downleg)....... and it(the HP950) had the best balance between part throttle and wot....... had decent A/F ratios without needing giant jets in it(which all the other carbs needed), and it made slightly more power than any of the others....... despite being the smallest one tested.
That’s just a long story to say....... you don’t know how good any of them work without trying them.
The 1.600 x 1.750 body with the fancy annular boosters was the worst carb we tried.
Very very rich at part throttle........ and too lean to make a pull at wot.
Added a bunch of jet to it, which made the part throttle even worse, but the wot was still too lean to pull it into the upper rpms.
That was the second carb we tried...... after we saw how far off it was, we moved on to another one.
Part of why I wanted to put my 950 on the motor was to verify there wasn’t something screwy going on with the combo.
Up to that point, all the carbs we tried were quite rich at part throttle...... and pretty lean at wot(especially considering how big the jets were that were being tried).
My 950 didn’t require any jet changes and had normal a/f ratios...... and part throttle was fine.
It was the carbs that weren’t too good....... the combo was fine.