LS Build: In Progress
02-04-2019 | 11:04 AM
#91
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Joined: Oct 2011
Posts: 273
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From: Dayton, OH/Burnside KY
I agree with carbs having the capability of running well. I guess what I like about efi is the much more controlled idle and ability to idle it down a bit more. The quick fuel 1050 4500 annular is the best Ive ever ran. On my daytona (489 blower motors) lowest I could idle down to was 900 which was like 13mph. Way too fast approaching dock or trailer. So constant in and out if gear. I know alot has to do with pitch and ratio. But if I can slow down just a tad Id be happy. I actually have quick fuel 750s sitting on my shelf but would be too small for my application being a dual plane. I generally run off the 130% rule on dual plane. That is 130 of cfm requirement. Works very well. Regarding prior post you will be fine. Capacity is king. I figure I have about 14 quarts as well when everything is considered.
02-04-2019 | 11:29 AM
#92
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Joined: Jan 2016
Posts: 493
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From: San Tan Valley AZ
Its funny you bring up stranded. The deciding factor for me was research on failures for sniper efi. Granted most were minor but then again getting towed on the water is a pricey mofo. My props really load the engine when initially put in gear.
02-04-2019 | 12:07 PM
#94
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Joined: Oct 2011
Posts: 273
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From: Dayton, OH/Burnside KY
02-05-2019 | 05:34 AM
#95
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Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
Not to mention I have studied many intake combo LS dyno shootouts and most EFI's struggle to top the HP of a good intake and carb which shocked me
02-05-2019 | 10:43 AM
#97
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Joined: Jan 2016
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From: San Tan Valley AZ
You are correct but the crossover point is generally ar 6k and up on ls3 heads. Although some do hug the line very close from 5k.
02-05-2019 | 10:55 AM
#98
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Joined: Feb 2009
Posts: 8,356
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From: NW Michigan
You made a compromise for the extra flow? I recall them with annular boosters flowing around 831. At least the ones I had did. 950's a great carb right out of the box for many applications and have a great booster signal. Would be my first choice on tunnel ram builds also.
Now we can get educated once again on the verturii and throttle bore size!!! lol.
Now we can get educated once again on the verturii and throttle bore size!!! lol.
02-05-2019 | 11:48 AM
#100
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Joined: Jan 2016
Posts: 493
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From: San Tan Valley AZ
You made a compromise for the extra flow? I recall them with annular boosters flowing around 831. At least the ones I had did. 950's a great carb right out of the box for many applications and have a great booster signal. Would be my first choice on tunnel ram builds also.
Now we can get educated once again on the verturii and throttle bore size!!! lol.
Now we can get educated once again on the verturii and throttle bore size!!! lol.
