1150 dominator Questions

Tom Goldman · 09-23-2009, 07:16 AM

I'd try an 850 on that motor. .Not enough compression,or rpm to justify anything larger. .........Probably would work if it was still on nitrous,but way to big without it...........Like Rich said ,It'll probably pick up a bunch of ET with a smaller carb..........Tom

Floyd Staggs · 09-23-2009, 02:06 PM

How about on a 10 3/4 to one 540 with .714, .714 cam etc? Is the 1150 to big? That's what I'm using.
4000 lb pickup, pump gas, 10.72 @ 122 best.

Tom Goldman · 09-23-2009, 04:25 PM

Floyd, I'd bet your short times ,probably up to the 660' would pick up considerably. ......I've seen guys use way to big a carb and have success,but I've also seen many who struggled with the problem Bob is having. .....Bottom line is you have to try different carbs to see which is best for your combo..........A while back,.I tried a 1050 on our S/ST AMC Spirit which has a very healthy 401 in it. 13 TO 1, big roller ,ect .....It picked up about 1 mph ,but lost over 2 tenths in ET! , compared to a good 850 carb. ......Tom

Floyd Staggs · 09-23-2009, 04:37 PM

Tom, the price was right on the 1150. A buddy of mine had it and wasn't using it, so there you be. I can borrow a 1050 and try it. Jet it the same 94 sq and see if there is any difference.
Thanks,

Floyd Staggs · 09-24-2009, 07:45 AM

Tom, OT, I just got one of them F.A.S.T. air fuel ratio recorders, their instructions leave a little to be desired. Do you know how to adjust the carburetor to get the desired numbers? What are the desired numbers?

Tom Goldman · 09-24-2009, 04:09 PM

Quote:

Originally Posted by Floyd Staggs

Tom, OT, I just got one of them F.A.S.T. air fuel ratio recorders, their instructions leave a little to be desired. Do you know how to adjust the carburetor to get the desired numbers? What are the desired numbers?

A/f meters are great at showing you where the ratio is in relation to the car on the track. ....BUT correcting the fuel curve can be tricky. ...Most of the real experts I've talked to recommend 12.2 to 1 as a safe a/fr to shoot for ,but the car may want to lean out more as you progress down the track,and some cars work better with a much richer ratio at the starting line...........Jetting ,air bleeds and ignition timing all come into play. ...That why its best to establish a base line on the dyno before tuning on the track. .......If the a/fr is in a safe area, I'd start by moving the ign timing to see if it is covering any jetting deficencies...........Tom

Floyd Staggs · 09-24-2009, 05:02 PM

Thanks, Tom,
I'm just looking to keep it consistent and try to keep up with the changes in the weather.

09-23-2009, 07:16 AM	#1
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,478 Likes: 894 Liked 886 Times in 238 Posts	Re: 1150 dominator Questions I'd try an 850 on that motor. .Not enough compression,or rpm to justify anything larger. .........Probably would work if it was still on nitrous,but way to big without it...........Like Rich said ,It'll probably pick up a bunch of ET with a smaller carb..........Tom __________________ Tom Goldman 1500 SG , 1506 STK

09-23-2009, 02:06 PM	#2
Floyd Staggs VIP Member Join Date: Feb 2006 Location: Cucamonga, CA Posts: 1,522 Likes: 169 Liked 229 Times in 99 Posts	Re: 1150 dominator Questions How about on a 10 3/4 to one 540 with .714, .714 cam etc? Is the 1150 to big? That's what I'm using. 4000 lb pickup, pump gas, 10.72 @ 122 best. __________________ Floyd Staggs 787 SST

09-23-2009, 04:25 PM	#3
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,478 Likes: 894 Liked 886 Times in 238 Posts	Re: 1150 dominator Questions Floyd, I'd bet your short times ,probably up to the 660' would pick up considerably. ......I've seen guys use way to big a carb and have success,but I've also seen many who struggled with the problem Bob is having. .....Bottom line is you have to try different carbs to see which is best for your combo..........A while back,.I tried a 1050 on our S/ST AMC Spirit which has a very healthy 401 in it. 13 TO 1, big roller ,ect .....It picked up about 1 mph ,but lost over 2 tenths in ET! , compared to a good 850 carb. ......Tom __________________ Tom Goldman 1500 SG , 1506 STK

09-23-2009, 04:37 PM	#4
Floyd Staggs VIP Member Join Date: Feb 2006 Location: Cucamonga, CA Posts: 1,522 Likes: 169 Liked 229 Times in 99 Posts	Re: 1150 dominator Questions Tom, the price was right on the 1150. A buddy of mine had it and wasn't using it, so there you be. I can borrow a 1050 and try it. Jet it the same 94 sq and see if there is any difference. Thanks, __________________ Floyd Staggs 787 SST

09-24-2009, 07:45 AM	#5
Floyd Staggs VIP Member Join Date: Feb 2006 Location: Cucamonga, CA Posts: 1,522 Likes: 169 Liked 229 Times in 99 Posts	Re: 1150 dominator Questions Tom, OT, I just got one of them F.A.S.T. air fuel ratio recorders, their instructions leave a little to be desired. Do you know how to adjust the carburetor to get the desired numbers? What are the desired numbers? __________________ Floyd Staggs 787 SST

09-24-2009, 05:02 PM	#7
Floyd Staggs VIP Member Join Date: Feb 2006 Location: Cucamonga, CA Posts: 1,522 Likes: 169 Liked 229 Times in 99 Posts	Re: 1150 dominator Questions Thanks, Tom, I'm just looking to keep it consistent and try to keep up with the changes in the weather. __________________ Floyd Staggs 787 SST