Dstryr

I've been reading this site for a while and I'm going to get ready to do my ls1 swap into a 1970 split bumper camaro.

What I was wondering was why do people put carbs on the ls1 when I thought the whole point in doing the ls1 swap was for the reliability of fuel injection?

Is there anything better or worse about using carb injection instead of fuel injection?

I'd like to use fuel injection but hooking up a carb system sounds way easier.

Cam72aro

iTrader: (28)

You basically answered your own question. It is EASIER to put a carb on these motors then wire the fuel injection. The downside to the carb is worse gas mileage and not the ease of driveability with fuel injection. Alot of people take the easy way out with the carb, but be me, fuel injection is the way to go. I like being able to bump the key and it fire instead of having to pump the gas, choke it, fast idle it, etc, etc, etc.

Dstryr

How much harder is it really to install the fuel injection? Just get the wiring harness done I presume?

If you were just going to run a carb motor why not just save money and get a normal 350 block?

slow

iTrader: (7)

an aluminim LSx headed motor, makes more power than a normal 350, you would need aluminum heads, and a cam to = a lsx motor.

Personally, I would NEVER install a carb onto a LSx motor, but I do EFI tuning for a living, and hate carbs.

Ryan

Rodder

iTrader: (2)

Wiring up the LS1 EFI isn't hard. You can send your harness off to get reworked and idiot-proofed for probably less than the cost of a manifold and a good carb. If you can't hook up a Speartech-reworked harness, you'll probably also have problem hooking up a spark box and fuel pump for a carb'd LSX.

Cam72aro

iTrader: (28)

I went the speartech route and it was money well spent. He has excellant tech support and does great work. I agree with rodder, it is cheaper to have a harness worked then buying the manifold, carb, and the msd to contorl the spark.

caged02

iTrader: (21)

I went with a carb set up on my LS1 conversion and wished I wouldn't have. I am pleased how good it runs, but the gas mileage is horrible! I plan on switching mine over to FI this winter.

gordz32

Don't you have to run a special tank for efi or do you just need to run a return line?

G-Body

iTrader: (4)

The tank depends on what you are doing with the car. There are a at least a few people on here running their stock tank with an external pump and they added a place to feed the return line in. It seems like if they keep it over 1/4 tank they do not have problems with fuel slosh. You can also cut the stock tank top and put in a complete fuel sending unit/pump assembly from a LS1 f-body which negates the need for baffels.

Cam72aro

iTrader: (28)

Mine is the stock tank with a sump welded in the bottom, a walbro 255 external pump, corvette regulator, and return going in through the stock pickup. The return is only about 2 ft long as the regulator is mounted by the tank and pump, so I have one line going to the front of the car. Hope this helps, Josh