Topic sums it up.


Thanks!

 

kinda, sorta, not really. While GM considered vortec engines to be 1987+, popular opionon has made them 1996+ since it was such a dramatic improvement. The Vortec engines 350(L31), and 305(L30) were not TBI. They have 8 poppet injectors.

 

lotsaballs, are you on LS1.com or any 4x4 boards? that sig looks familiar.

 

They had TBI up to '95 I believe, although as Tas mentioned they werent considered Vortec (only the 4.3 from '86 until now was). They didnt really get advertised as Vortec until they lost the TBI and got better heads.

 

So the heads on the 350 trucks arent Vortec?

I sometimes post on jeepaholics.com but I dont have the same sig.

 

1996-1998 vortec 350 (the L31) and 1996-1998 vortec 305 (the L30) did not have TBI. The 1987-1995 truck 350 (the L05) and 1987-1995 truck 305 (the L03) did have TBI.

 

Yeah what Tas said...LOL

And to point out to Iroc22 the 4.3 Vortec'z came out in 93 in the all S-10 Blazer'z and some S-10 trucks and in 94 all were Vortec.
You might be thinking of the 4-Tech 2.5(boat anchor)

Peace

 

Nope the 4.3 since it came out in '86 was advertised from GM as Vortec. You might be confused with the introduction of CPFI in the Blazers in '93 and it was considered a H.O. Vortec.

 

Another note to clear it up.....the confusion comes with all of these motors when you open the hood. Some say vortec and some don't. As a geneal rule, the ones that say it under the hood are the higher output engines despite the fact that all '87 and up were vortec. One example would be comparing an '89 4.3 TBI blazer to a '94 4.3 S10ss. The '94 had the 200hp engine that said vortec on the intake cover. The '89 TBI didn't. Also, the ever popular "vortec heads" are those off '96 and up pickups and SUV's that have a diffenent bolt pattern than a TBI intake manifold.

 

The folks at GM have told me that they consider all centerbolt heads to be vortec, but the public only refers to the 96 and newer as vortecs.

 

4.3 VIN W=Vortec 93 - up
4.3 VIN Z=TBI 93 - down



Checked my Delco book at work today..........

 

No aghhh they were advertised as 4.3 Vortec motors, the introduction of CPI in '93 was the reason why the VIN code changed. What Delco book is this?

 

That's what I was trying to say.

 

I looked in the Delco Ingition Nov 2001 and In the goodwrench motor catalog.............I sell a FULL line of delco partz

The Partz Man Peace

 

I am the parts man.

I work at an auto parts store here in Canada, and on the computer look-up, it says Vortec on every 4.3 liter. And, I have researched this topic before. Our store also sells a AC/Delco parts but not the Goodwrench engines.

 

We are the public, nobody here gives a **** what GM considers vortec. SO CALL ONLY THE 96 AND NEWER L31 AND L30 ENGINES VORTEC!
If all centerbolt heads are considered vortec then hell, my 305 L03 was a vortec motor HAHAHA, it just doesn't sound right.
In 95 trucks were still using TBI, when they switched to the newer design (vortec) heads, they went to a port injection system similar to the LS1s (plastic, very cool).
So in my opinion, there were no vortec engines with TBI, just plane Jane small blocks, some with and some without roller cams, all came stock with swirl port heads which made TBI look like a crappy induction system. Just like how a pitcher or goalie is usually accused of loosing a game, same thing goes for the intake systems on engines. Nobody bothers to call the LO3, it's TBI or 305. It's a shame so few people understand the differences between all the chevy motors yet they call themselves Chevy fans....why...maybe they just like the transmissions....NOT! Learn the motors, learn the trannys, people will listen

 

Hey Iroc22 I dont mean to dis ya, but Ive been sellin partz for 14 Yearz and you never go by what the computers sayz, Read the catalogs they dont lie. The computer only knows what the programer put in.
I work for O'Reilly's and we carry a FULL line of delco and motorcraft.
And to answer your other question better, I looked in the Delco 100A/21 catalog.

Peace

 

Seriously the 4.3 V6 motors were advertised from GM as Vortec V6's ever since 1986. You should know that in 93 they introduced CPI on them and that's the difference. I'm not gonna argue any more because I have researched into this stuff and I know GM advertised the 4.3 V6 as the Vortec motor in the Astro/Safari vans and 1/2 ton trucks since '86.

P.S. yes the computer example was a bad one. But why would catalogs not lie? do GM/Ford historians review the final publications?

 

In 86 you were 2 years old.
But whatever you say Jr.

I just know what the parts books tell me, and my wife's 93 Jimmy 4.3 VORTEC..............



P.S Im also on the S-10 board as TexasOutlaw...........look me up LOL

 

Hmm....GM's facts or someone's opinion on the internet...I think I'll take GM on this one. I do understand the differences in the chevy motors and trannies, it appears you don't. You can question me all you want, but I got this straight from the General.

 

Yeah I was two years old in 86..what does that have to do with it? I've been researching GM related material since I was 10.

So? you're wife owns a 93 Jimmy? Then you'll know that it has the CPI and the different VIN character. It doesnt change the fact that you dont believe the 86-92 Vortec motors were advertised as Vortec V6's

Ok annnnndddd?? So you're on an S10 board which one? there's a few.

 

S-Series.org

And my wifes Sayz Vortec right on the motor.
Dude I didnt mean to **** you off, just help you so chill out

Any way Im not into advertising and all I know are MY parts catalogs that I look at 55 hours a week.

Peace

 

Lol, and you'll also believe the General when they say it's for the best that they kill the f-body. Or how about when they tell you your oil filter is a PF25 when for the same price you could get a PF35 with more filtration...General didn't tell you that now did they.
Where is it that proves your statement about me not understanding the differences in chevy motors and trannies? Wanna quiz me?
I don't believe half the stuff GM spits out at us. I'm tired of listening to people say this and that can't be done when they never plunked their asses down to try it. BTW, who is the General anyways? I'm whiling to bet it's a group of people that have no idea what they're talking about. They just manipulate facts into idiot proof statements to cover up their you know what just incase somebody stupid does something out of context and sues.
Oh yeah, and don't listen to the guys on the internet...no no no, you should never do that! We're only going faster than the stock "General's design."

 

That's exactly what I think they are...a bunch of know-nothing Lawyers.

 

I don't want to interfere your discussion, I'm just curious.

What are these "Vortec" heads/engines?? First time I heard of them was in this board.

Andreas