Blowers - 1050 Dominators or convert to EFI?
05-24-2019, 12:09 PM
#1
Registered
Thread Starter
Blowers - 1050 Dominators or convert to EFI?
I have a pair of 177s with Dominator 1050s - getting ready to add them to my 454 mags.
I am no carb or spark-plug reading expert so the plan was low boost (5 or less), sub 4800rpms (it's a cruiser so dont need WOT ever), cooler plugs, decent gas dock gas in the 92-octane range, extra oil coolers, extra fuel delivery hoses etc. I am even changing props to reduce some of the load when going up on plane.
In addition, I had some cool Gil Exhaust riser blocks made up to be able to add in Air/Fuel ratio guages/O2 sensors...both sides if needed.
So the question - with the "smart" EFIs systems out today should I sell the Dominators and go EFI and let the computer keep me from possibly detonating or are carbs low risk enough for this application?
Heavy boat w blowers could be a disaster .... could use the extra layer of safety if it makes sense.
I am no carb or spark-plug reading expert so the plan was low boost (5 or less), sub 4800rpms (it's a cruiser so dont need WOT ever), cooler plugs, decent gas dock gas in the 92-octane range, extra oil coolers, extra fuel delivery hoses etc. I am even changing props to reduce some of the load when going up on plane.
In addition, I had some cool Gil Exhaust riser blocks made up to be able to add in Air/Fuel ratio guages/O2 sensors...both sides if needed.
So the question - with the "smart" EFIs systems out today should I sell the Dominators and go EFI and let the computer keep me from possibly detonating or are carbs low risk enough for this application?
Heavy boat w blowers could be a disaster .... could use the extra layer of safety if it makes sense.
05-25-2019, 10:52 AM
#3
Registered
iTrader: (4)
Carbs. That combination has been ran for years. You can probably get the jetting off the net or the tech section here. You're probably going to be looking at another $3000+ for EFI. I just purchased all the components for 2 EFI systems and the cost is more than advertised once all is added up. And I'm replacing 2 perfectly running carbs that have been flawless for 18 yrs that hold a consistent 12 8-12.3 AFR throughout all throttle positions.
05-27-2019, 06:42 AM
#4
Platinum Member
Platinum Member
I have freshened my 454's with 177's this winter (well one is done the other is still at the builders) I have added Holler Sniper EFI, no real world testing yet. On the dyno it made 617hp with dyno headers and mufflers at 5500. It was more than I was expecting
The only reason I switched is, my original set up was 750s. It was very expensive with fuel pumps, filters, lines etc.
I love the interface available with the holley set up
The only reason I switched is, my original set up was 750s. It was very expensive with fuel pumps, filters, lines etc.
I love the interface available with the holley set up
05-27-2019, 11:03 AM
#5
Registered
We have 871 w/ dual holly 750s on a single engine cat. Love the look and function of the carbs. Roots blowers and carbs=great combo.
05-29-2019, 12:48 AM
#6
Charter Member # 55
Charter Member
The stock carbs will idle like an EFI when tuned correctly. A little cold blooded since there is no choke, but 1-2 minutes at 1000rpms solves the issue on cold start ups.
