How do you tell the difference between the 165HP and 200HP versions of the Chevy 4.3L V6? (the 200HP motor was offered as an option in the '94 Chevy Astro - I don't know about the S10 pickup although it shared the 4.3)

Thanks in advance!

Chevy also made a 4.3L V8, BTW, but it came in the Caprice only. It replaced the 305 as Chevrolet's "standard" V8 engine. It's a 265 cu.in. screamer!

Sorry can't help you with the V6 question. The S-10 4.3 V6 is a good engine, from what I understand. I'd get one of those, lots of aftermarket parts for them, including cams.

Eric

I own a 1992 Astro. On that year the 8th didgit of the VIN number is the engine code. The Z engine is the smaller horsepower engine. Also in 1992 the air filters are different. The low horse engine uses a traditional round filter. The high output engine used a flat filter. Hope this leads you in the right direction.

I think what he means is the difference between a regular 4.3 L and a "Vortec 4.3L". Its the vortec that is better, do some research on the internet im sure it has lots of crap on it.

The Dude is correct. That is what I meant.

there is a 4.3z and a 4.3w
the z engine is throttle body injection
the w is multi port fuel injection

Unbeatable, I have a '94 Safari with the Z engine. 165hp TBI. I believe it is a Vortec as it is cast into my valve covers. The 200hp is CPI & has the remote rectangular air filter. I think in '94 the CPI may have only been 185hp. Not sure. I don't know if there are other differences.