[Turbo Downer]

I could be wrong here but I was wondering if I'm able to manifold swap from my spider fuel injection to maybe a fuel rail type from a newer model 4.3L. I've got a 97' GMC Jimmy 2dr and I would just love to squeeze some more power and fuel economy out of it.

 

[oldeerslayer]

When you say "newer model 4.3L" do you mean the 2012+ LV3 Eco Tec 4.3?
That engine was a clean sheet design and shares nothing with the LU3 or other earlier 4.3's.
The fact that it is the same 4.3L displacement was just a coincidence. It's a coil on plug ignition system and direct injection fuel system. It also makes about 50% more power.
There was a marine 4.3 intake with fuel rails for the S10 era engine, but they're rare, expensive, and far from a bolt on installation.

 

[Salty Crusty]

If it has a good many miles on it, you can replace the OEM junk pintle injectors with an upgrade, usually less than $200 on sleazebay. If the old ones are worn and clogged as most are, it'll wake it right up. 3.42 gears are ideal for the ratios of the 4L60E, chances are that's what you already have.

Power AND Economy - 5.3L swap. Problem is it'll cost more than the truck and a few years of fuel.

 

[DOINSND1]

I have this for sale. I had it on my 1996 Vortec V6 in my sand rail.

 

[Rhotpursuit]

If it's for sale, it should be in the Flea Market.

 

[DOINSND1]

If it's for sale, it should be in the Flea Market.

It Is

 

[Rhotpursuit]

It Is

I see you that you bumped an old thread that should have been deleted after 1 month....per the Rules..next time.

 

[oldeerslayer]

Got the fuel tails or injectors for it?

 

[GEOD998]

I see you that you bumped an old thread that should have been deleted after 1 month....per the Rules..next time.

Im cornfused

 

[Turbo Downer]

When you say "newer model 4.3L" do you mean the 2012+ LV3 Eco Tec 4.3?
That engine was a clean sheet design and shares nothing with the LU3 or other earlier 4.3's.
The fact that it is the same 4.3L displacement was just a coincidence. It's a coil on plug ignition system and direct injection fuel system. It also makes about 50% more power.
There was a marine 4.3 intake with fuel rails for the S10 era engine, but they're rare, expensive, and far from a bolt on installation.

I meant the last version of the TRUE 4.3, because I heard that they had fuel rails and individual injectors.

 

[Turbo Downer]

If it has a good many miles on it, you can replace the OEM junk pintle injectors with an upgrade, usually less than $200 on sleazebay. If the old ones are worn and clogged as most are, it'll wake it right up. 3.42 gears are ideal for the ratios of the 4L60E, chances are that's what you already have.

Power AND Economy - 5.3L swap. Problem is it'll cost more than the truck and a few years of fuel.

Yeah I’m thinking of some new injectors if I can’t do anything about the intake, and I would do a 5.3 LS swap but I’ve heard it’s a pain in the *** to swap it in and I live in California so I have to deal with a bunch of smog.

 

[manbearpig]

LOL, you must be young. We should go back to when smog made the skies hazy and we had to deal with acid rain.

 

[Turbo Downer]

LOL, you must be young. We should go back to when smog made the skies hazy and we had to deal with acid rain.

Oh what I would give to be able to be a car guy back then.