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and the GM 3800 engine? like gas mileages,power,etc. The reason is I am test driving a 2003 chevrolet monte carlo and it has a 3400 SFI engine in it. I have owned a 1989 pontiac bonneville in the past that had a 3800 and I know that car got great gas mileage. I would appreciate hearing from a certified mechanic that is familar with the two engines or anyone that is famillar with the two engines.

2006-12-30 15:00:45 · 6 answers · asked by Papa WILL 6 in Cars & Transportation Car Makes Chevrolet

6 answers

The 3400 is a good engine. They tend to run for years without any significant problems. The fuel economy is good as well. The 3800 has a little more torgue than the 3400. The 3800 is a 90 degree V configuration. The 3400 is a 60 degree configuration. Both of these engines have been around for many years in one form or another. The 3400 engine is based on the 2.8 V6 that came out in the early 80s, so it's a proven design.

2006-12-30 15:13:28 · answer #1 · answered by Mr. Badwrench 6 · 1 0

There are a number of differences between the 3400 and the 3800 engines. First, the 3400 is a Chevrolet built engine while the 3800 is a Buick built engine. The roots of the 3800 engine go back several more years than the 3400. The 3800 has over the years been known by a few names. They started out as a 231 V6 rear wheel drive configuration. And to you Buick people reading this, yes, the 225 V6 was the first, but I'm sticking with the 231 here for explanation's sake. Up through '77 the 231 was an "odd fire" engine. Had to do with distributor configuration. Late '77s started the "even fire" configuration. Then in '80 when cars like the Olds Omega, Buick Skylark, etc. came out, they changed the engine mounting configuration to FWD body style. This continued through '98 or so in the full size FWD GM body styles of Pontiac, Oldsmobile and Buick. The 3400 started out as a 3.1 litre engine in cars such as the Lumina, and grew to a 3.4 or 3400cc size later. Power? You are going to find the 3400 to be a little dissapointing if you are used to the 3800. Mileage, it will be close to the same as you are used to with the 3800. There is a possibility that the 3400 in a Monte Carlo body might NOT get as good as your Bonneville. The reason for this is that you have a smaller engine in as heavy if not heavier body as the Bonneville. I currently own a '98 Olds Intrigue with the 3800, 3.8, 231, or any way you might want to say it. I get around 23 to 25 country/city combo driving, and am not afraid to get up and drive it when "necessary". There is more that I could say, but I hope you get the picture from what I've told you so far.

2006-12-30 17:35:33 · answer #2 · answered by pygmybilly 3 · 3 0

This Site Might Help You.

RE:
I need to know some information about the GM 3400 engine and the big differences between it......?
and the GM 3800 engine? like gas mileages,power,etc. The reason is I am test driving a 2003 chevrolet monte carlo and it has a 3400 SFI engine in it. I have owned a 1989 pontiac bonneville in the past that had a 3800 and I know that car got great gas mileage. I would appreciate hearing from a...

2015-08-19 01:17:45 · answer #3 · answered by Lanny 1 · 0 0

They are two designs for engine blocks. One is smaller than the other. Back in the day, technology permitted the size of a small block to about 350 cubic inches. Now, they can bore out the block further by making a stronger block, and using more exotic metals like titanium. The difference between a small bock and a big one is the distance between the dead center of each bore. Chances are, a 427 vette with a small block will be lighter, have more horsepower, but have a narrower power band with a little less torque. It will also be capable of significantly higher rpms because of the stronger metals; and the fact that they get the larger displacement from added stroke, instead of bore. The old school big block will have a wider powerband, but will be a lot bigger. Assuming both cars have the same overall specs (including weight, which will almost never be the case), the big block will win off of the line, but the small block will gain that back at higher speeds.

2016-03-22 19:00:44 · answer #4 · answered by Anonymous · 0 0

3400 Engine

2016-09-29 02:17:18 · answer #5 · answered by ? 4 · 0 0

My husband is a assisant manger and head tech. He says there about the same but the intake gasket on the 3400 go bad often. 3800's don't.

2006-12-30 15:10:21 · answer #6 · answered by Marina 3 · 1 0

the 3.4 will get a little better gas mileage than the 3800, but if i were you, id find another gm with a 3800 because 3800 are cheap to fix and so reliable. i know this do to the fact that i have 3 3800's sitting in my garage right now.

2006-12-30 15:11:49 · answer #7 · answered by Lg 4 · 1 0

both engines are very reliable, but i'd go with the 3800 if i were you. more power for not much more fuel at all.

2006-12-30 16:31:08 · answer #8 · answered by Anonymous · 1 0

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