Carb or no Carb

Oldchevy61

Oldchevy61

Not-quite-so-new-guy
Jun 3, 2018
31
29
18
Nichols SC
#1
I just got my 5.3 block and parts back from the machine shop and about to start assembly. Cam should be here tomorrow, oil pan Saturday. Heads are getting freshened up and should be back in a few weeks. Im trying to decide weather to go full ls with the fuel injection or do a carb swap. I know nothing about the ls wiring and computers. I will be running the 350 turbo in the elco so from what Im reading I need a standalone harness for non elec trans and a fuse block. As far as ecm, don't have that yet. Not to mention fuel pump and tank. I have Always had carbs so all this has me leaning towards a carb swap. I welcome input from both sides to help my decision.
 
Turbolq4

Turbolq4

G-Body Guru
Sep 25, 2017
781
698
93
Boise Idaho
#2
Efi is worth the trouble on the front end of the project for the lack of trouble, efficiency, and consistency after it's done.
 
fleming442

fleming442

Comic Book Super Hero
Dec 26, 2013
3,392
1,527
113
#3
My $.02- carbs and non-OD trans LS swaps baffle me. Why not just do a healthy 406 or 383 that'll have the same power and bolt right in? No special oil pans, motor mounts, headers, distributor drives, etc.
I don't get it.....
 
DRIVEN

DRIVEN

Comic Book Super Hero
Apr 25, 2009
4,657
1,688
113
Owyhee County
#4
EFI is really tough to beat. The only carb advantage would be immediate simplicity. You'll give up power, MPG, cold start, and reliability.
 
olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
3,326
736
113
Melville,Saskatchewan
#5
My $.02- carbs and non-OD trans LS swaps baffle me. Why not just do a healthy 406 or 383 that'll have the same power and bolt right in? No special oil pans, motor mounts, headers, distributor drives, etc.
I don't get it.....
Exactly, why bother.
 
lilbowtie

lilbowtie

Royal Smart Person
Jan 7, 2006
2,088
1,046
113
Canton Mi
#6
Only you can answer your question - old school or the way of the future. Looks like money will be your deciding factor
 
oLdS1

oLdS1

Not-quite-so-new-guy
Mar 25, 2018
48
63
18
Van Wert OH
#7
I'll say this, I just got my car completely finished with an LS1 and a 700r and love it. I bought my harness ($450) because the one that came with my engine was hacked up and could not be used. If you get on LT1swap.com he has all the info you need to do the harness work yourself or you can get it don't by someone in the $250 range. If you're going to put the time and effort into the swap I would get the benefit of the injection as well.

Just my .02
 
Oldchevy61

Oldchevy61

Not-quite-so-new-guy
Jun 3, 2018
31
29
18
Nichols SC
#8
Old school it is . Just ordered intake and ignition controller
 
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