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#1 |
Registered User
Join Date: Jan 2015
Location: Rapid City SD
Posts: 31
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Anyone running a carbureted LS motor?
I hate the look of the LS intakes and fuel rails but I do like the distributor-less design of the LS ignition so I am thinking of putting in a carbureted LS motor. Hope this doesn't sound like a dumb question but if I put a carb on an LS motor with the MSD LS ignition coil kit do I still need the factory computer and harness or does the MSD kit replace that? I understand I will need a standalone controller if I use a 4l60E for a transmission. I know I am going to get some negative feedback on this so here we go!
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#2 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,686
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Re: Anyone running a carbureted LS motor?
Don't like the LS look?....read dayj1's build.....http://67-72chevytrucks.com/vboard/s...ght=Skin+a+cat
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#3 |
Registered User
Join Date: Jan 2015
Location: Rapid City SD
Posts: 31
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Re: Anyone running a carbureted LS motor?
Really nice build. I'm trying to keep it as simple as possible as far as wiring goes, just wondering if ill still need the ECM with a carbed setup.
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#4 |
Registered User
Join Date: May 2012
Location: horseheads,ny rust belt
Posts: 2,794
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Re: Anyone running a carbureted LS motor?
need a spark controler box at min for the fact there i no dist setup .
__________________
77-k30lb BIG truck build . 87-k30lb budget beater build . 85-k30lb the plow machine build . 85-c10sb summer fun toy . ----------------------------- HOLLEY SNIPER efi = worst case of p.i.t.a i ever had . EDELBROCK pro flo 4 = best deal going so far . love my setup works great. |
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#5 |
Registered User
Join Date: Apr 2010
Location: Guntersville Alabama
Posts: 1,073
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Re: Anyone running a carbureted LS motor?
No hate here . I have both fi and carb and like both .Both are built for performance . The carb engine is in a 67 camaro and fi is in my 82 c10 . The carb engine is a little monster with a 4 speed .
So nothing wrong with a carbed LS engine in my book . As for controller I use the MSD 6010 for the 24 crank reluctor wheel . It comes with the harness you need to plug into your existing sensors . There are some newer versions with the option on reluctor . There is also some other company's that make systems also . Just be sure to get the right one for your reluctor . So in the end to answer your question , you do not need any part of the oem harness or computer . As you already stated you will need a controller for the trans if automatic . |
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#6 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,334
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Re: Anyone running a carbureted LS motor?
There is NOTHING about a carb that would EVER make me want one when good, calibrated EFI is available. Point being once the air cleaner is on, there's not much difference.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#7 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,686
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Re: Anyone running a carbureted LS motor?
I agree...putting a carb in place of injection defeats all the benefits of having a LS....if i wanted a carb I'd just keep a SB....
__________________
Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#8 |
Registered User
Join Date: Apr 2010
Location: Guntersville Alabama
Posts: 1,073
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Re: Anyone running a carbureted LS motor?
Big difference in power and torque between a sbc and ls even when carbed . Dont get me wrong , I like the efi as well . Its just another avenue with the ls motors .
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#9 | |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,334
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Re: Anyone running a carbureted LS motor?
Quote:
2%, or even 5%, at wide open peak output only should matter only to heads-up drag racing, really... If you want a carb, get a carb, none of my business. I just want to disabuse anyone from the notion that the car will be faster, better, stronger, or really in any way improved by a carb over EFI.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#10 | ||
Registered User
Join Date: Apr 2010
Location: Guntersville Alabama
Posts: 1,073
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Re: Anyone running a carbureted LS motor?
Quote:
Quote:
If you will read my statement again it is not comparing efi to carb . It is comparing small block chevy carbed to ls carbed . There is a lot of difference between the two in stock form even when carbed . In no way I was saying carb was going to make more power over efi . |
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#11 |
Registered User
Join Date: Jan 2015
Location: Rapid City SD
Posts: 31
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Re: Anyone running a carbureted LS motor?
thanks for the info guys.
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