What carbs you all running on your LSx?
02-25-2011, 08:26 PM
#81
We just purchased a cam for my buddy's 5.3L project(232/236 598ish lift on a 110). The heads are being milled a little and getting some good springs, and then we're dropping a victor jr on it with an 1150 Dominator. Should be running in early March, so I'll post up what happens then.
02-25-2011, 10:47 PM
#82
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We just purchased a cam for my buddy's 5.3L project(232/236 598ish lift on a 110). The heads are being milled a little and getting some good springs, and then we're dropping a victor jr on it with an 1150 Dominator. Should be running in early March, so I'll post up what happens then.
02-26-2011, 08:59 AM
#85
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Not saying it won't work, but in my opinion, it is far from "ideal". With the lack of air speed, getting the fuel curve right is going to be a chore. Even with the fuel curve right, I can almost guarantee a smaller carburetor will make more power and recover from shifts better. Good luck with the setup, please let us know how it does. 
02-26-2011, 01:55 PM
#88
I know it's too much carb, but it's not my call on this project. I mentioned a 750 to him, but, he wants to work with what he already has on hand. The cam is just the only one we could find in our price range and time frame. I would have liked to go smaller on the cam though. He also has a loose converter for this build already. Buddy said he plans to build a stroker with it after he gives it a go with these parts. We'll see what happens. I gonna try to borrow an extra carb at the track so after he's done fooling around with that monster carb he can slap on a more appropriate one to see the difference.
02-26-2011, 02:00 PM
#89
I know it's too much carb, but it's not my call on this project. I mentioned a 750 to him, but, he wants to work with what he already has on hand. The cam is just the only one we could find in our price range and time frame. I would have liked to go smaller on the cam though. He also has a loose converter for this build already. Buddy said he plans to build a stroker with it after he gives it a go with these parts. We'll see what happens. I gonna try to borrow an extra carb at the track so after he's done fooling around with that monster carb he can slap on a more appropriate one to see the difference.
02-26-2011, 07:16 PM
#92
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Not sure on the 4150s, but I have seen then guts of the new 4500s. The dimensions of the metering blocks are a compromise of street and race, and results have been poor, and that was said by the Holley engineers. Word is that they are going to create a seperate part number for the carburetors with the redesigned metering blocks though.
02-26-2011, 10:38 PM
#94
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Heres what we are talking about...
http://www.holley.com/types/Ultra%20Dominators.asp
http://www.holley.com/types/Ultra%20...%20Pumpers.asp
http://www.holley.com/types/Ultra%20Dominators.asp
http://www.holley.com/types/Ultra%20...%20Pumpers.asp
02-27-2011, 05:34 AM
#95
I just put a Holley Street HP 750 on my dads 6.0
Out of the box it didn't need anything to make it run and drive. Bolted it on and set the idle. Pulled the plugs after the first drive and they look very good. Going to get the wideband on the car for the next drive just to see where it is at.
Overall this looks to be a good piece for a out of the box bolt on for a 450hp 6.0
Tim
Out of the box it didn't need anything to make it run and drive. Bolted it on and set the idle. Pulled the plugs after the first drive and they look very good. Going to get the wideband on the car for the next drive just to see where it is at.
Overall this looks to be a good piece for a out of the box bolt on for a 450hp 6.0
Tim
04-18-2011, 10:37 PM
#97
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Bringing it back from the dead thread grave... Bought an older QFT P-750 for $350 shipped. It looks to be in great shape, and he has the feedback to back up his honesty. I hope. Anyway, I hope I made the right choice. For the money, it seems like I did. Only time and tunning will tell.
05-01-2011, 07:35 PM
#99
10 Second Club
I plan on using my 750 Mighty Demon. A buddy of mine has a SV-1 on his BB '61 Vette, OMG thats a gorgeous carb 
Jack @ Pinks all-out
http://benchseatracin.smugmug.com/Ca...826_vwHK9-A-LB
http://youtu.be/QFlJVD9x0Kg Yellowbullet Nats 8.97ET
Jack @ Pinks all-out
http://benchseatracin.smugmug.com/Ca...826_vwHK9-A-LB
http://youtu.be/QFlJVD9x0Kg Yellowbullet Nats 8.97ET
Last edited by Doug G; 05-01-2011 at 07:50 PM.
05-02-2011, 07:27 AM
#100
I just put a Holley Street HP 750 on my dads 6.0
Out of the box it didn't need anything to make it run and drive. Bolted it on and set the idle. Pulled the plugs after the first drive and they look very good. Going to get the wideband on the car for the next drive just to see where it is at.
Overall this looks to be a good piece for a out of the box bolt on for a 450hp 6.0
Tim
Out of the box it didn't need anything to make it run and drive. Bolted it on and set the idle. Pulled the plugs after the first drive and they look very good. Going to get the wideband on the car for the next drive just to see where it is at.
Overall this looks to be a good piece for a out of the box bolt on for a 450hp 6.0
Tim