GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

GM redesigned 4.3 v6 LSX based????

Old Dec 16, 2011 | 08:48 PM
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The current 4.3 is due for redesign. It needs all the help it can get.
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Old Dec 16, 2011 | 09:02 PM
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Well an OHC design from GM would be intresting but since they use the 4.3L in so many other applictions I would imagine they would stick with a pushrod design.

Only time will tell
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Old Dec 16, 2011 | 09:05 PM
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Originally Posted by EVILGMC
440hp out of 5 liters...I'm not a Ford fan...but that's damn respectable.
I’m not a fan either, but I have to agree the performance is admirable to say the least for such a small engine. I like GM’s full-size trucks in general, but Ford and Dodge have come a long ways in recent years with their trucks overall. The fit, finish, ride, interiors and even performance of their engines have taken quite a jump. I rode in a new Ford ˝ Ton 4WD the other day that bested most GM ˝ Ton 2WD’s and that’s a shame. Hopefully the new redesign of GM’s truck line will place them back on a level playing field.

I also agree push-rod design or not, I venture to guess DI is in the future of the up and coming engines and really should be.
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Old Dec 16, 2011 | 09:11 PM
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all we can do is wait but i do think gm is gonna play the following game with ford, and is going to make there version of the eco-boost. but who knows.
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Old Dec 16, 2011 | 09:17 PM
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Originally Posted by EVILGMC
440hp out of 5 liters...I'm not a Ford fan...but that's damn respectable.
Where does this come from? A visit to the F150 page shows this:

302 @ 6500 rpm (3.7L V6)
360 @ 5500 rpm (5.0L V8)
411 @ 5500 rpm (6.2L V8)
365 @ 5000 rpm (EcoBoost®)



After riding in a 4.3 equipped S-10 and fullsize trucks, I agree that they definitely suck and are turds.
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Old Dec 16, 2011 | 09:30 PM
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I had a 96 silverado 4x4 4.3l 5 speed and wasn't bad for a reg cab but it pulled 12 big round bails of hay on a 20ft trailer without a problem doin only 40, and pulled a 99 fullsize suburban with car trailer down the highway 55 mph struggled on hills but still pulled all day never showed signs of givn up, my opinon its not built for racing or pulling all the time but if ur in a pinch it will sufice just fine a lsx based 4.3 would be awesome even better if they put a turbo on it.
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Old Dec 16, 2011 | 09:34 PM
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Originally Posted by Coban
Where does this come from?
I’m sure he was referring to the output as installed in a Mustang, but never-the-less, even the output as installed in the truck is pretty darned decent.
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Old Dec 16, 2011 | 09:51 PM
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I have no complaints about the 4.3, especially the Vortec in my 93 S-10 blazer. It's a screamer! I have had my fair share of 4.0L and H.O. 4.0L Jeeps with their so called torquey 6 cylinder and my blazer blows the doors off them. 3,200 lb 21' wakeboard boat drug with no problems up and down the highway to the lake... Ford is not a comfortable vehicle to ride in (2010 platinum) or a good looking vehicle (any) GM powers majority if not all boats on the market today because their pushrod motors are the S**T!!!
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Old Dec 16, 2011 | 10:29 PM
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Originally Posted by Coban
Where does this come from? A visit to the F150 page shows this:

302 @ 6500 rpm (3.7L V6)
360 @ 5500 rpm (5.0L V8)
411 @ 5500 rpm (6.2L V8)
365 @ 5000 rpm (EcoBoost®)



After riding in a 4.3 equipped S-10 and fullsize trucks, I agree that they definitely suck and are turds.

The 2012 Boss Mustang...yes, it is a car, but still the same basic engine.
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Old Dec 16, 2011 | 10:31 PM
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I was talking to a master technician friend of mine and he was mentioning gasoline engines going away from traditional ignition systems....an initial spark to get things going, then rely on heat and pressure for combustion...yes...diesel style....controlled detonation chaos.
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