Let me get your opinion guys...... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Zumo · 04-09-2004, 03:26 PM

This is just a thought. Do you think it would be feesable(sp) to go with a 4.3L Vortec V6 setup in these trucks? My reasoning is because of the rising gas prices. Do they get better gas mileage? Just curios, they sale a 4.3l V6 crate motor don't they?

diggin69 · 04-09-2004, 03:49 PM

yes it can be done, I dont think anything would have to be changed, and www.paceparts.com has your engine long or short I think.

Mudder · 04-09-2004, 04:26 PM

I have a 4.3 in a 2001 S10, auto, and I get 20-21 highway.

71402BB · 04-09-2004, 06:58 PM

I really like the 4.3's. Tough little suckers! But I also like the origanal inlines! I personally would go with a 250 or 292 and just back it up with an O/D trans, weather it's manual or auto. I know that there are atleast half a dozen other guys on here that run an origanal inline with an O/D trans and get 20mpg or better! JMO

72 CustomCamper · 04-10-2004, 01:34 AM

The 4.3's are tough motors. Basicly they are 350's minus 2 cylinders...

Chuck

Mudder · 04-10-2004, 01:35 AM

I know the one I got screams.........but then you are talking a lot more weight in a full size than in a little S10.

Jeepster376 · 04-10-2004, 02:21 AM

I wouldn't count on getting much better mileage to make it worthwhile. It still takes the same amount of energy to motivate your truck down the road, with a V6 as it would with a V8. I have gotten better mileage before with a bigger engine in the same vehicle, I think because the bigger engine didn't need to work as hard as the underpowered smaller engine.

Tuning up as best you can and taming your driving habits would probably have better effect. And before going to such an extreme of downsizing the whole motor, I think I would try a 2 barrel carb on the V8 first.

68lwb · 04-10-2004, 06:25 AM

I used to have a 2000 Silverado (4x4) with the 4.3 V6 and automatic with overdrive. Got about the same mileage with it as the guys with the V8's got. Had plenty of power.

Blue Beard · 04-10-2004, 09:24 AM

What would be needed to do a complete install...?

Do these have the computer and injection...?

Jeepster376 · 04-10-2004, 01:59 PM

It should be practically a drop in replacement for a Small Block V-8. It is as 72 Custom Camper said a 350 without 2 cylinders. Same Water pump, timing cover, brackets, just shorter block heads and manifold. I think the Motor mount location is even the same as a 350. Correct? They have both carb models and injected, depending on what you pull it from.

04-09-2004, 03:26 PM	#1
Zumo Hot Rods For Life Join Date: Sep 2001 Location: Waxahachie, TX Posts: 3,305	Let me get your opinion guys...... This is just a thought. Do you think it would be feesable(sp) to go with a 4.3L Vortec V6 setup in these trucks? My reasoning is because of the rising gas prices. Do they get better gas mileage? Just curios, they sale a 4.3l V6 crate motor don't they? __________________ 1968 C10 LWB **SOLD* Andy Viva Los Bicicletas! Los Muertos Custom Bicycles

04-09-2004, 03:49 PM	#2
diggin69 Southern but in Ohio!!!! Join Date: Jan 2002 Location: Eaton,Oh. 45320 Posts: 467	yes it can be done, I dont think anything would have to be changed, and www.paceparts.com has your engine long or short I think. __________________ 1969 C/10 3/4 ton 4x4 longbed custom, frame made from a 79 1972 custom-10 half/ton longbed 1980 1/2 ton 4x4 all original 350/350/205 with air Eaton,Oh rebelryder@hotmail.com

04-09-2004, 06:58 PM	#4
71402BB now thats a true COON DOG Join Date: Nov 2000 Location: Franconia, NH Posts: 1,977	I really like the 4.3's. Tough little suckers! But I also like the origanal inlines! I personally would go with a 250 or 292 and just back it up with an O/D trans, weather it's manual or auto. I know that there are atleast half a dozen other guys on here that run an origanal inline with an O/D trans and get 20mpg or better! JMO __________________ current project 67 402BB stout th350 3.08's with a locker. Plan on tubs 18.5's out back! (thanks Burnsman!) 71 SWB Stepside, was a 250, now is a 402 Big Block with 4 speed and 3.73's ( was crushed by a tree, bed sold, motor pulled) was my first truck!... oh well... 72 LWB 4x4 350 4-speed 3.08's posi wearing army olive drab green (SOLD!) 68 BURB 50TH LOOKALIKE work in progress, soon to have 250-I6 with a 3-speed on the tree 4.11's and posi ( currently sitting in back yard tarped awaiting time, $$$, and lots of love!) 67 1 TON- work truck 396 sm 420 4-speed, flat bed 4.57 gears "big red" (my first landscape truck, very rusty and crusty! but still gets the job done when needed!)

04-10-2004, 01:34 AM	#5
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,368	The 4.3's are tough motors. Basicly they are 350's minus 2 cylinders... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

04-10-2004, 02:21 AM	#7
Jeepster376 Registered User Join Date: Feb 2004 Location: Massachusetts Posts: 269	I wouldn't count on getting much better mileage to make it worthwhile. It still takes the same amount of energy to motivate your truck down the road, with a V6 as it would with a V8. I have gotten better mileage before with a bigger engine in the same vehicle, I think because the bigger engine didn't need to work as hard as the underpowered smaller engine. Tuning up as best you can and taming your driving habits would probably have better effect. And before going to such an extreme of downsizing the whole motor, I think I would try a 2 barrel carb on the V8 first. __________________ 72 Cheyenne Super 4x4 SWB

04-09-2004, 04:26 PM	#3
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	I have a 4.3 in a 2001 S10, auto, and I get 20-21 highway.

04-10-2004, 01:35 AM	#6
Mudder Registered User Join Date: Feb 2001 Location: East Central, MO Posts: 11,336	I know the one I got screams.........but then you are talking a lot more weight in a full size than in a little S10.

04-10-2004, 06:25 AM	#8
68lwb Registered User Join Date: Dec 2003 Location: Northern Indiana Posts: 85	I used to have a 2000 Silverado (4x4) with the 4.3 V6 and automatic with overdrive. Got about the same mileage with it as the guys with the V8's got. Had plenty of power.

04-10-2004, 09:24 AM	#9
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,831	What would be needed to do a complete install...? Do these have the computer and injection...? __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

04-10-2004, 01:59 PM	#10
Jeepster376 Registered User Join Date: Feb 2004 Location: Massachusetts Posts: 269	It should be practically a drop in replacement for a Small Block V-8. It is as 72 Custom Camper said a 350 without 2 cylinders. Same Water pump, timing cover, brackets, just shorter block heads and manifold. I think the Motor mount location is even the same as a 350. Correct? They have both carb models and injected, depending on what you pull it from. __________________ 72 Cheyenne Super 4x4 SWB



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