Anyone tried a carb intake and dist on a ls1?
11-02-2008, 07:23 PM
#102
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Good info fellas.
I'm looking into this route for the cost savings over a modded EFI system. So far i've picked up on:
-H/C 6.0L= 750cfm+ demon carb
-Timing can be changed on laptop
-MAF, TB, intake, injectors, rails, EGR, AIR, etc will be dropped.
-Vic JR. is the preferred manifold
-MSD 6010 box for Gen III
-Electric fuel pump can be used
Ok questions....
Does a return line need to be used?
Will a N2O plate system be ok to use?
Will i need a larger Carb for a 200 shot?
Is there anything else major i'm missing?
I have a LQ4 short block and built TH400 im planning on tossing into a Fox Body for next summer.
I'm looking into this route for the cost savings over a modded EFI system. So far i've picked up on:
-H/C 6.0L= 750cfm+ demon carb
-Timing can be changed on laptop
-MAF, TB, intake, injectors, rails, EGR, AIR, etc will be dropped.
-Vic JR. is the preferred manifold
-MSD 6010 box for Gen III
-Electric fuel pump can be used
Ok questions....
Does a return line need to be used?
Will a N2O plate system be ok to use?
Will i need a larger Carb for a 200 shot?
Is there anything else major i'm missing?
I have a LQ4 short block and built TH400 im planning on tossing into a Fox Body for next summer.
11-03-2008, 05:20 PM
#103
The return line depends on your pump/regulator setup. I have an internally regulated Holley 97gph pump. Pumps like the Holley black will require and external regulator and return line.
I plan on using an N20 plate system.
I dont think you will need a larger carburetor for the nitrous. If you are running a wet shot the fuel solenoid/jet should add the extra fuel needed and the N2O will of course be adding the oxygen needed.
You will need to purchase a MAP from an LS1 to used with the MSD box if you want a vacuum advance timing tunability or if you plan on running boost through it.
You will also need either a special converter ($560 or so) or a flywheel spacer ($60 or so) to run the TH400 with the LS1.
I plan on using an N20 plate system.
I dont think you will need a larger carburetor for the nitrous. If you are running a wet shot the fuel solenoid/jet should add the extra fuel needed and the N2O will of course be adding the oxygen needed.
You will need to purchase a MAP from an LS1 to used with the MSD box if you want a vacuum advance timing tunability or if you plan on running boost through it.
You will also need either a special converter ($560 or so) or a flywheel spacer ($60 or so) to run the TH400 with the LS1.
11-21-2008, 11:11 AM
#105
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I have a carb set up on my car it is a 346,solid roller set up..I am still playing with the timing on it and learning something new everyday...But i like the set up.. If anyone has some ideas and want to share some info with me call me at 601 416 4117. Need to know some info on timing curves...
11-21-2008, 12:36 PM
#106
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Is it cheaper to go with a carb setup as opposed to trying to do a swap with the FI??
I am really wanting to do something with my car which is a 73 camaro with a tired 350.
I keep trying to make up my mind which direction to go with this thing, LSx with injection, LSx with carb, or just refresh my spare motor ect.
So many options!!!!
I am really wanting to do something with my car which is a 73 camaro with a tired 350.
I keep trying to make up my mind which direction to go with this thing, LSx with injection, LSx with carb, or just refresh my spare motor ect.
So many options!!!!
11-21-2008, 02:45 PM
#107
Putting an LSX into is NOT cheap at all. The difference between going FI vs carb is maybe $1,000 if even that. I would reccomend EFI if you dont want to spend hours tuning a carb. They are tricky to tune on these engines. I've spent about $700 on my carb to get it to where it is now where its still a little tempermental in the lower rpms.
I'd say just swapping the motor and putting a cam in (as you might as well) would be atleast 3500-$4000. Then if you decide to go with a different tranny another $2,000 for the trans, crossember, driveshaft etc.
I'd say just swapping the motor and putting a cam in (as you might as well) would be atleast 3500-$4000. Then if you decide to go with a different tranny another $2,000 for the trans, crossember, driveshaft etc.
11-25-2008, 09:53 AM
#108
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Well not sure you need a "special" converter...the standard th400/th350 will work. I purchase the flywheel and spacer from HUGHES for a LS1 and standard th400/th350 converter bolted right up no issues. Later I found out you can modd the flywheel and use the spacer to make it work also... how to mod it I am not sure. But I had about 160 in the new flywheel and spacer from hughes.
BTW...if you going to run 200 shot of NO2 it would be better to buy the upgraded converter (that will cost over 400 for sure) to get harden internals for NO2
11-25-2008, 09:58 AM
#109
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Putting an LSX into is NOT cheap at all. The difference between going FI vs carb is maybe $1,000 if even that. I would reccomend EFI if you dont want to spend hours tuning a carb. They are tricky to tune on these engines. I've spent about $700 on my carb to get it to where it is now where its still a little tempermental in the lower rpms.
I'd say just swapping the motor and putting a cam in (as you might as well) would be atleast 3500-$4000. Then if you decide to go with a different tranny another $2,000 for the trans, crossember, driveshaft etc.
I'd say just swapping the motor and putting a cam in (as you might as well) would be atleast 3500-$4000. Then if you decide to go with a different tranny another $2,000 for the trans, crossember, driveshaft etc.
Get MSD computer 350-400, and carb intake 250-350, and holley E-pump 150... your in business.
As far as a CARB... I purchased a AED HOLLEY, these bad boys come ready to go !! Mine fired right up and all I did was adjust the idle slightly.
11-25-2008, 10:03 AM
#110
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Is it cheaper to go with a carb setup as opposed to trying to do a swap with the FI??
I am really wanting to do something with my car which is a 73 camaro with a tired 350.
I keep trying to make up my mind which direction to go with this thing, LSx with injection, LSx with carb, or just refresh my spare motor ect.
So many options!!!!
I am really wanting to do something with my car which is a 73 camaro with a tired 350.
I keep trying to make up my mind which direction to go with this thing, LSx with injection, LSx with carb, or just refresh my spare motor ect.
So many options!!!!
I say small block chevy.
Some people think it is a SB2 Nascar motor... LOL
either way you will kill a standard sbc in power and performance.
I was running 12.0@114 with a 3000 stall and 3.36 highway gear. Totally streetable.
New combo on the way
11-25-2008, 08:28 PM
#111
I spent about $95 on the carburetor
$50 on the reabild kit
3 different power valves at $10 each
a set of acclerator pump cams - $24
a 50cc acclerator pump kit which was like $60 i think
an electric choke setup which was like another $60
Holley adjust-ajet metering plates (jets sizes adjusted by a screw driver) - $200
and a few dozen other little parts like different squirter sizes, fuel line, pressure gauge, float bowls, etc.... It was probably more like $500
11-26-2008, 10:33 AM
#112
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WOW !!
Ok that make more sense. You should have gotten the HOLLEY tune up kit. Way cheaper and comes with tons jets, power valves, accel pumps and gaskets. Pretty cool Kit. Comes in a nice carry case that is labeled.
just and idea for the future.
Ok that make more sense. You should have gotten the HOLLEY tune up kit. Way cheaper and comes with tons jets, power valves, accel pumps and gaskets. Pretty cool Kit. Comes in a nice carry case that is labeled.
just and idea for the future.
11-26-2008, 03:34 PM
#113
Haha i didnt know a kit existed really. I have a local speed shop that sells the parts individually so i just bought what i felt i needed. I got the adjust-a-jets since i run a wideband constantly so i can adjust the AFR without even turning the engine off.
11-28-2008, 11:54 PM
#114
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Very nice thread! I'm building a 98 TA racecar. I already have a cam only low 11 sec 99 LS1 Camaro so I wanted to do something alittle different with the TA so I have been thinking about doing a Procharged BBC but have decided after reading this (and realizing you do not need the LS harness to run the carb setup) I'm going carb LS. This will be strickly a racecar stripped to the bone. One question though, what do you do about knock sensors?
Last edited by cainsw; 11-29-2008 at 12:16 AM.
12-06-2008, 08:33 AM
#117
Just thought i'd post a pic of my engine now that it's finished. Parts pictured include, victor jr intake, MSD 610, 2001 truck coils, holley 750 vacuum secondarie with electric choke and adjustable metering plates, Norris catch can, hooker ceramic coated headers, LT1 fans and radiator, factory ls1 camaro alternator location, factory ls1 uppper and lower radiator hoeses (had to trim 1/2" off the bottom one), Moroso oil pan and remote mount oil filter, ATS adapert plates, 327 frame stands from a nova (i think), prothane sbc mounts.
01-27-2009, 09:27 AM
#120
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haha well im trying to convince my dad to go with an lq4 in my '69 Chevy C/10 insead of another sbc. Neither of us were happy with the performance of the tired stock engine so after i blew a head gasket we started engine shopping. Its a daily driver so mileage has to be a consideration (kinda), the old sbc only got about 12 mpg