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ChadGresham 12-06-2012 06:10 PM

4.3 liter top speed
I'm looking at a 98 s10 ss, because I like 4.3 liters, and I'm wondering what the top speed possible is for these? Vin code w. I plan on open exhaust, cold air intake, throttle plate mod, and a programmer (hypertech). I know that particular programmer has a setting for 128 mph but will the motor actually do that with the mods listed?

Valkyrie5.7 12-06-2012 06:19 PM

First, I hope you don't plan on doing 128mph on the street. I also hope that when you do actually try to reach the vehicles top speed, you do so with the right tires. Not all are created equal.

Second, with the right tires and the speed limiter removed, I see no reason why that vehicle couldn't hit that speed in stock form. Might be a good idea to install a driveshaft loop as cheap security.

As far as the modifications you have planned, I don't think they're going to net you much in the horsepower department. Perhaps DoubleVision will see this post and comment, he seems to know quite a bit about making power with 4.3L's. I've heard it takes deep pockets to make one move.

ChadGresham 12-06-2012 07:10 PM

I don't want it to be a race truck, just to run faster than my friend's trucks. So the mods should be just fine for that. And tires will be H rated. Hopefully someone who has done something similar will chime in

ChadGresham 12-06-2012 07:12 PM

Is got a 4l60e and 3.73 posi read end

ChadGresham 12-06-2012 07:13 PM

It's an SS so it's 2in lower than stock s10s

ChadGresham 12-06-2012 07:28 PM

Still just curious about what kind of top speed it'll run. Mainly it'll be my daily driver but I want it to do over 115 as well

Valkyrie5.7 12-06-2012 08:15 PM

hcompton, my brain hurts after some of things you post. It's like automotive advice from Charles Manson: Hard to pick through whats there to find something that sounds logical. Anywho, it's a freaking 98 s-10. It's definitely not shaped like a brick and although 120mph probably hard for a 59 rambler to do - or maybe one of those 80's diesel Escorts - as long as nothing is limiting the computer to tell it to not pass a certain speed, it'll do 120mph.

Now I don't like shooting from the hip, so that's why I suggested that you wait till DoubleVision chimes in. Since you seem to need your answers now, I'll give them to you: Chances are your friends will probably have a faster car than you unless they drive a Buick Century or a base-model Civic. I think every V6 Camry made in the last 10 years could lay waste to most 4.3L-powered vehicles, with exception to the Syclone/Typhoon twins.

Let's not even mention that top speed is not going to win you any races that aren't on the autobahn or salt flats. If you want to be faster than your friends, buy an Ls1 F-body or something. Unless you really want to be different, I wouldn't waste my time with a 350 that had two cylinders chopped off.

...And I happen to like both 4.3L's and S-10s. But there's your answer. Like it or lump it.

ChadGresham 12-07-2012 07:00 AM

Seems like people have more negative than helpful answers on these forums anymore. Thanks for whatever info you gave though

bondo 12-07-2012 07:07 AM


Originally Posted by ChadGresham (Post 1620100)
Seems like people have more negative than helpful answers on these forums anymore. Thanks for whatever info you gave though

Ayuh,... It's more the content of yer questions, than the answers offered...:rolleyes:

ChadGresham 12-07-2012 07:49 AM

Thought that's what forums were for, people who have a car question and want to get it answered. I have a legitimate question and you have a useless answer. Way to be a helpful member of this forum.

1Gary 12-07-2012 08:20 AM

[QUOTE=hcompton;1619995] But you cando some crazy mods to the 4.3 v6 it will make a crap load of power with a bunch of different combos. Nascar had to limit theuseof v6 becasue they were going so fast made almost as much power as the v8 but with less weight.

The NASCAR 4.3's where/are the furthest thing from a stock OEM you could get.I bought one at the Indy Drag Racer's auction from RCR racing.They don't compare.

I think it would be useful for the O/P to understand the evolution of the various OEM 4.3's that where offered and see some of the good guy's stock parts. It's a long read,but you might find it is time well spent.

Rebuilding the New Chevy 262: Engine Builder

Hope this helps.................

runn141 12-07-2012 08:44 AM


Originally Posted by ChadGresham (Post 1620001)
It's an SS so it's 2in lower than stock s10s

no they arent, they just have the ZQ8 suspension package. which dont even have the 33mm sway bar. some extremes do along with a rear sway bar though.

ChadGresham 12-07-2012 09:22 AM

Thanks hcomton for a reasonable answer! Good info there and you are right there is only one way to find out, I'll get in that thing and drive it!

ChadGresham 12-07-2012 09:35 AM

Runn141 the definition of zq8 suspension , especially in 96 and newer s10s is lowered suspension (1.5-2in) big stabilizer bars and bilstein shocks, plus an anti hop shock in the rear.

1Gary 12-07-2012 12:23 PM


Originally Posted by Valkyrie5.7 (Post 1620027)
hcompton, my brain hurts after some of things you post. It's like automotive advice from Charles Manson: Hard to pick through whats there to find something that sounds logical.

Yeah me too!!.

QUOTE=hcompton;1620116]Well the 4.3 is a 350 with two cylinders loped off. and it works great. you can build the crap out of these engines. To say and stock camary would out run it is not really fair since its older. Put the camary engine in a truck and it would run like a turd. 4.3 is setup from the factory for good tq and will out tow and pull the camary engine any day of the week. Now put a cam that is a big as the camary cam with valve timing at high rpm range since they have variable valve timing. and the 4.3 would make north of 300 hp.

Camary engine is also about twice the cost of the s10 motor. car is also about 35 grand for a v6 camary new. s10 was low cost vehicle.

Now that being said take a look at these.
Here is a 1000+ hp 4.3 on the dyno.
Nelson Racing Engines-1073 hp 4.3L V6 - YouTube

And here is the truck with that motor in it.
GMC Typhoon : 1200hp Turbo V6 Drag Race Wheelie - YouTube

S10 is square so it is shaped like a brick. areodynamics is a big issue ask anyone that drags one. They all have bigger motors than low to the ground areodynaimc cars to run the same numbers. Now its not by much but your need more power to push that truck than a normal car.

These truck usally run pretty good most of the time you install a v8 becasue your truck didnt come with the v6. If you got the v6 already and wanted more power a simple bolt on super charger kit will make 300+ hp and that is not going to make anyoen unhappy in and s10.

i think i read that stock ls version with v6 could go 143 mph as far as gearing was concerned but I think those numbers were for 4x4 and of course it will not go that fast just has the gear to go that fast. air resistence will stop it around 125 to 135 for sure at 140 you kinda hit a wall if you dont have major hp to push past it. But like i said before if gearing is off it may not reach that top speed only one way to find out.

You take the most outlandish example in a twin turbo,that too being nothing that resembles a OEM engine,heck,likely not even a OEM block,where the only common thing about it is maybe the Chevy Bowtie on the valve covers and post it for what??Entertainment value??. That is so far removed from real street,Gezzz.

Chad-the provided link I posted will give you options of affordable OEM parts for what are the best heads to use as a example.If you understand how GM got to the highest hp ratings,you can use that to your advantage.Also what swaps and what doesn't.Is there room for improvement using OEM parts??. The answer is yes and all that isn't just in the vein of turbo's.

I got ten yrs invested into Astro/Safari vans.You want to talk about aero issues,those are akin to pushing a pc of plywood down the road.I wouldn't want to be caught dead in one over 100 mph or should I say if I was in one that fast,I would soon be found dead in one.Is your truck as bad as that??. Nope.Thing is,I too question speeds that fast on the street.I don't mind some occasional stop light racing as long as it isn't out of control and lifted long before the speeds are way out of line.Just let logic rain down on you,be safe,so we can read many posts from you in the yrs to come.:thumbup:

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