Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Carbureted LSX Forum
Sign in using an external account
Register Forgot Password?
Search

Carbureted LSX Forum Carburetors | Carbed Intakes | Carb Tuning Tips for LSX Enthusiasts

LSx Carb'd Swap Q's

Reply
 
Thread Tools Search this Thread
Old 12-29-2011, 05:45 PM   #1
Staging Lane
Garage is empty, add now
 
MiniLSx's Avatar
 
Trader Rating: 0
Join Date: Nov 2011
Posts: 70
Default LSx Carb'd Swap Q's

Hey guys, I have a 1985 Trans Am 305 TPI. The old 305 is getting a bit tired, and i'm looking into doing an 5.3 swap. Now, I want to do this as simply and quickly as possible. Would a carb'd setup be easier to setup then the fuel injected setup? since the car is fuel injected now, would i need to do anything with the fuel system to make a carb'd system work right? i plan on keeping the original trans (700r4) and everything else. basically, i'm looking to see whats quicker/easier to do. if i were to go the carb'd route, what kind of intake manifolds do you guys recommend?
thanks in advance
__________________
1997 Camaro Z28 - Head/Cam LT1 with Bolt Ons -361whp/369 ft lbs
MiniLSx is offline   Reply With Quote
Old 12-29-2011, 06:24 PM   #2
In-Zane Moderator
Garage is empty, add now
 
ZONES89RS's Avatar
 
Trader Rating: 22
Join Date: Jan 2007
Location: Conroe, Texas
Posts: 10,323
Default

Check out the lsx/ltx swap section on www.thirdgen.org and look at the EFI swaps they have there, they will give detailed break down on cost for both. Depends on your budget and ability with mechanical ability.
__________________

BUILT NOT BOUGHT
80 Coupe 6.0 TH400
86 TA 5.3, 4L80
92 S10 ECSB 4.8 T56
Quote:
Originally Posted by -Ross- View Post
Haw mut horzpowa sbc or lsx eenjun mayk b4 eet need tarbo liked da 2jz?
ZONES89RS is offline   Reply With Quote
Old 12-29-2011, 09:22 PM   #3
Staging Lane
Garage is empty, add now
 
MiniLSx's Avatar
 
Trader Rating: 0
Join Date: Nov 2011
Posts: 70
Default

Cool man thats some good info! I'll be reading it thoroughly
__________________
1997 Camaro Z28 - Head/Cam LT1 with Bolt Ons -361whp/369 ft lbs
MiniLSx is offline   Reply With Quote
Old 12-29-2011, 09:36 PM   #4
TECH Senior Member
2000 Chevrolet Camaro
My Garage
 
NemeSS's Avatar
 
Trader Rating: 123
Join Date: Sep 2005
Location: Houston,TX
Posts: 6,657
Default

Hey Zane
We should have a 3rd gen swap sticky guideline here for a carb version. A breakdown of parts cost and typical of what can be done with basic parts and budget.
U alredy know where to get the ls engines
I will supply the alternator and other accesory brackets and configurations.
I got a whole new updated version of the alternator bracket.
NemeSS is offline   Reply With Quote
Old 12-29-2011, 09:36 PM   #5
TECH Resident
Garage is empty, add now
 
Trader Rating: 0
Join Date: Sep 2009
Location: Frozen Tundra, WI
Posts: 860
Default

I think your decision is going to depend a lot on how much electronics you get with the new motor. If you get little to none then a carb will probably be cheaper. If you are planning on keeping the motor stock then factory EFI might be worth keeping. The Edelbrock RPM intake would be enough for a 5.3 unless you are shifting at 6500+.
__________________
72 Chevelle: 6.0 LQ9, 226 EPS, PRC 215s, 200-4R, 3200 stall, 3.42

It is treason to own an auto from a foreign based company!!!
Paul57 is offline   Reply With Quote
Old 12-29-2011, 10:52 PM   #6
Staging Lane
Garage is empty, add now
 
MiniLSx's Avatar
 
Trader Rating: 0
Join Date: Nov 2011
Posts: 70
Default

The engine would be mostly stock for a while, internally. Im sure a stock 5.3 probabaly has twice the power of the 305 as it sits. But eventually i'd like to tear into the engine
__________________
1997 Camaro Z28 - Head/Cam LT1 with Bolt Ons -361whp/369 ft lbs
MiniLSx is offline   Reply With Quote
Old 12-30-2011, 11:48 AM   #7
Staging Lane
Garage is empty, add now
 
MiniLSx's Avatar
 
Trader Rating: 0
Join Date: Nov 2011
Posts: 70
Default

also, i'd probably be getting just the engine. not likely to get the harness/pcm with it. so in that case, carb swap might be cheaper/easier? i'm not looking to make an insane amount of power or anything right now, this is just going to my street machine. i hear you guys talking about a module that controls the coils and stuff, so i'm gonna have to look into that further.
__________________
1997 Camaro Z28 - Head/Cam LT1 with Bolt Ons -361whp/369 ft lbs
MiniLSx is offline   Reply With Quote
Old 12-30-2011, 01:21 PM   #8
TECH Fanatic
Garage is empty, add now
 
newschool72's Avatar
 
Trader Rating: 10
Join Date: Feb 2011
Location: georgia
Posts: 1,496
Default

An MSD box (6010 or 6012 depending on your reluctor wheel) will control the spark and timing. I think with the factory fuel pump in the tank, there will be way too much fuel pressure for a carbed set-up. Im not sure how a pressure regulator would work with the high pressure of the EFI pump.
__________________
72 Camaro, LS3, Bullet Racing custom grind cam, 2004R, TVS suspension , big brakes, FAST EZ-EFI sitting on a GMPP LS3 dual plane, Pro Touring Style !

68 Camaro, Old School 406, TH350, 4.10s, Pumpgas, Drag Radials
, Footbraken 11.30 at 120.

2005 GTO, CAI, LongTubes, Box Tune, M6, DragBags and Poly Bushings. 13.4 at 109....SOLD AND MISSED!!!
newschool72 is offline   Reply With Quote
Old 12-30-2011, 02:50 PM   #9
Old School Heavy
1965 Buick Skylark
 
speedtigger's Avatar
 
Trader Rating: 14
Join Date: May 2010
Location: Florida
Posts: 6,302
Default

Any of the carburetor return style regulators should work with his high pressure fuel pump just fine. You just can't dead head it.
__________________


65 Skylark My Build Thread - LQ9, Victor Jr. Carburetor, 3.90 Gears, 4000 Stall - Cam Motion Low Lash Solid Street Cam
Best on motor 10.86 @ 123.15 ~ 10.04 @ 133.35 on spray ~ 10 second pass track video
speedtigger is online now   Reply With Quote
Old 12-30-2011, 02:55 PM   #10
TECH Resident
Garage is empty, add now
 
Trader Rating: 0
Join Date: Sep 2009
Location: Frozen Tundra, WI
Posts: 860
Default

Quote:
Originally Posted by newschool72 View Post
An MSD box (6010 or 6012 depending on your reluctor wheel) will control the spark and timing.
Like he said, make sure you get the MSD box and not the Edelbrock. You will have to buy the intake and box separate. The MSD box is programmable while the Edelbrock is not.
__________________
72 Chevelle: 6.0 LQ9, 226 EPS, PRC 215s, 200-4R, 3200 stall, 3.42

It is treason to own an auto from a foreign based company!!!
Paul57 is offline   Reply With Quote
Old 12-30-2011, 04:43 PM   #11
In-Zane Moderator
Garage is empty, add now
 
ZONES89RS's Avatar
 
Trader Rating: 22
Join Date: Jan 2007
Location: Conroe, Texas
Posts: 10,323
Default

Quote:
Originally Posted by NemeSS View Post
Hey Zane
We should have a 3rd gen swap sticky guideline here for a carb version. A breakdown of parts cost and typical of what can be done with basic parts and budget.
U alredy know where to get the ls engines
I will supply the alternator and other accesory brackets and configurations.
I got a whole new updated version of the alternator bracket.


Actually I dida pretty thorough detailed swap price for a budget genIII/IV swap on TGO, I might copy and paste it here and modify it a bit. I will get with you on it when I have time.
__________________

BUILT NOT BOUGHT
80 Coupe 6.0 TH400
86 TA 5.3, 4L80
92 S10 ECSB 4.8 T56
Quote:
Originally Posted by -Ross- View Post
Haw mut horzpowa sbc or lsx eenjun mayk b4 eet need tarbo liked da 2jz?
ZONES89RS is offline   Reply With Quote
Old 12-30-2011, 09:22 PM   #12
TECH Senior Member
2000 Chevrolet Camaro
My Garage
 
NemeSS's Avatar
 
Trader Rating: 123
Join Date: Sep 2005
Location: Houston,TX
Posts: 6,657
Default

Ok. Cool. I dont visit tgo that often anymore
NemeSS is offline   Reply With Quote
Old 12-30-2011, 09:22 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Carb'd Dyno numbers/MPH times Lawhead Carbureted LSX Forum 12 02-26-2013 05:04 PM
99 carb'd camaro daturbosix Carbureted LSX Forum 12 10-08-2012 03:03 PM
Camshaft suggestion for Carb'd 5.3 Pro-Tour Heavy Chevy Conversions & Hybrids 2 07-11-2010 01:37 PM
Realistic 5.3 swap price into third gen Camaro hawaiifiveoh Conversions & Hybrids 10 10-22-2009 02:11 PM
looking for a supercharger/twin turbo for LS2 block aschmd Forced Induction 4 07-10-2007 09:00 AM


Tags
305, 3rd, 53, carb, carbd, carberater, forum, gen, kind, lsx, make, power, setups, swap, tpi


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 06:54 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - JOBS
Emails & Contact Details