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How much bigger is a 4.3 than a 3.8, external dimension wise. Just have a few ideas up my sleeve....

get em out! SC 3.8 is faster than a 4.3

They're probably about the same....they're both 90-degree V6s...one is a Chevy and the other is a Buick.

FYI: The LG3 (not to be confused with the 3.8L Buick V6 LG3) Vortec 4300 V6 produces 200 hp, 260 ft-lbs trq.

bonnevillain wrote:get em out! SC 3.8 is faster than a 4.3

What about the turbo 4.3's that came in cyclones and typhoons? It gets those 4k+ lb bricks pretty far in the 1/4.

I do remember these 2 motors being compared a while back.. IIRC they share nothing in common other than the 90* v6 part.

the 4.3 Vortec in my buddy's blazer is REALLY short and looks tiny and it even has a smaller radiator than the Bonneville . I wouldn't be at all surprised if you could stuff one into a Bonne. Transmission and drivetrain would be a whole nother story though.

The only thing they have in common are the valve lifters. Literally.

You'd get more out of an L67 and the fit wouldn't be a problem.

01bonneSC wrote:How much bigger is a 4.3 than a 3.8, external dimension wise. Just have a few ideas up my sleeve....

It is wider, slighly longer in length, and heavier overall...also the bellhousing is the corp V8 pattern on most (if not all ) of the 90degree V6 Chevy blocks. Dimensions are due to freestanding 4" diameter bores...carried over from the SBC V8 block it is derrived from.

The Buick 3800 will be a better fit in most cases, just due to the accessory drive setup will make it more compact overall.

Dude just buy a Cyclone or Typhoon.

Allmachtige wrote:Dude just buy a Cyclone or Typhoon.

Oh, but this would be SO MUCH COOLER than a Cyclone or Typhoon....actually I'd prob try to make this work before before screwing around with a 4.3L..... ....http://www.gmperformanceparts.com/Engin ... engCat=rpo
I WILL FIND A WAY!!!!

If you really want an engine swap project, go for an LS4 swap.