Chevy 4.3 performance
Moderator: John_Heard
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- Joined: Thu May 24, 2007 4:51 pm
- Location: Brighton, TN
Chevy 4.3 performance
could anybody help me on setups on a Chevy 4.3 v6 for max horsepower any info or parts websites would be great thanx...
'95 GMC Sierra 4.3 5 spd. 12.51@108
What is the current setup?Most internals are the same as a 350 like pistons,timing chain, lifters ,pushrods ,rocker arms (You need the narrow ones if you have the 95' heads.)The obvious difference :2 less cylinders and I think its an even fire engine with only 1 rod per journal. By the way if your running 12.51 @ 108 I think your making some good HP already.Check GM Performance for race parts.Any good cam company should have a variety to choose from.
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- Posts: 4
- Joined: Thu May 24, 2007 4:51 pm
- Location: Brighton, TN
its a stock block, stock crank, stock rods, 11-1 flattops, stock heads with a lil work done, edelbrock performer tbi intake, throttlebody and computer off a 454 thats chipped, cam was custom cut from comp cams (dont kno specs rite off hand but its good for more horsepower) it ran that time with 4:10 gears and lincoln locker on 255/70/15r street tires with original '95 clutch.
'95 GMC Sierra 4.3 5 spd. 12.51@108
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- Posts: 4
- Joined: Thu May 24, 2007 4:51 pm
- Location: Brighton, TN
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- Posts: 4
- Joined: Thu May 24, 2007 4:51 pm
- Location: Brighton, TN
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- Posts: 21
- Joined: Wed Jan 07, 2009 8:52 pm
Re: Chevy 4.3 performance
Brodix does make some nice heads for them, as does GMPP. Vortec heads are the best bang for you buck though. You can get them re-drilled for your current intake, but the ports wont match up that well. So you're better off runnng a vortec intake too.
I don't know how crazy you want to get with it, but there's a lot of old Busch series blocks and head floating around, and that's where the serious 4.3 power is at.
I don't know how crazy you want to get with it, but there's a lot of old Busch series blocks and head floating around, and that's where the serious 4.3 power is at.
2000 Sierra-More cubes...looking for more boost.
1992 Typhoon-almost, mostly, sort of, kind of stock
1969 Mullet-Mobile-too much work
1992 Typhoon-almost, mostly, sort of, kind of stock
1969 Mullet-Mobile-too much work
Re: Chevy 4.3 performance
For some reason I was thinking GM ran the Buick 231 v6 in the Busch cars. Maybe they went to the 4.3L later, beats me?
'87 S10 stock suspension, Caltracs, 9" rearend, 1.82 Glide, 383 SBC,
Brodix Track1 Heads, 14:1 compression, 180 shot plate,
2" tube Hussler Headers, 1.38 60ft., 6.20 ET 1/8th, 109 MPH,
Still Tuning, more to come.
Brodix Track1 Heads, 14:1 compression, 180 shot plate,
2" tube Hussler Headers, 1.38 60ft., 6.20 ET 1/8th, 109 MPH,
Still Tuning, more to come.
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- Posts: 21
- Joined: Wed Jan 07, 2009 8:52 pm
Re: Chevy 4.3 performance
I think they did for awhile, but somewhre along the line there were some 4.3 versions too. 3 blocks just surfaced around here not too long ago. Go figure.stroker1 wrote:For some reason I was thinking GM ran the Buick 231 v6 in the Busch cars. Maybe they went to the 4.3L later, beats me?
2000 Sierra-More cubes...looking for more boost.
1992 Typhoon-almost, mostly, sort of, kind of stock
1969 Mullet-Mobile-too much work
1992 Typhoon-almost, mostly, sort of, kind of stock
1969 Mullet-Mobile-too much work
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