A small block chevy will run poorly longer than most engines will run

@@hyattbusbey3563 I picked 1989 for the van bc first year efi and a turbo 400 and corporate 10 bolt still...plus the 4.3 over the 305 for mileage.....

Theses motors are great in boats also reliable and great fuel economy

My Dad had a 302 like that. By the time we stopped driving it the compression was so bad that you couldn't park the truck on a hill. Amazingly it still started really easily even in Wisconsin winters.

@@hyattbusbey3563 bruh! I lost my shit at this!

Y E S ! I hope he snatches one in the near future and mod it to the Moon and back.

Testing of LV3 would likely be very close to the 4.2. However they are not yet at pick a part prices.

I'd like to see the new 4.3 tested

Sadly GM has now dropped the 4.3 V6 and made the 2.7T the std engine with 5.3/6.2 as options. So am LV3/LV1 will probably never get to pick a part prices, but they have a ton of potential as well!

I'm hoping as well. You can buy wrecked cars with them pretty cheap

Great combo. Look, anyone can build a stock engine or stick in an LS. I like the fact you're getting a little kinky with it and you're going to have a very fast/cool car when you're done. Keep grindin'!

Sounds like a truck. as it should.

Same

The L35 and L31 specs were the same, the LU3 is better, but you can look at afr or trickflow sbc vortec heads for ideas

I have a set of ported 4.3 96+ vortec heads with 2.00/1.570 valves and they flow 266/192. Brodix aluminum 4.3 -10 heads flow the same with 2.08/1.60 valves, but have a lot of material you can remove to port them well over 300 cfm!

@@SyTySpeedShop How much power are you making? Any more specs on that engine?

@@davidwitcher5443 275 cube 3.6 forged crank.030 over custom cam, twin Wynjammer centrifugal Superchargers. Just about done building it, but looking for ~450AWHP and it’s going in my 98 Bravada with a TBSS transfer case.

@@SyTySpeedShop WOW!!

GM still has some parts for the old small block V6 in their Performance Parts catalog. Back in the day, they had baby big block canted valve heads for it.

They used to about 20 years ago when the 4.3 was a popular circle track motor. All that support has just died over time. Hell, GM used to make an aluminum block with a 4.125 bore (small block 400 pistons).

Scat never had a stroker crank, it was a stoke stroke cast steel crank, eagle makes the only aftermarket h-beam rods available for the 4.3. There are still aftermarket parts available if you look around alittle harder and are willing to pay alittle more. There is a forged 3.60 stroke crank available, but again most aren’t willing to spend the money for it.

For all the support they had 20 years ago I couldn't find it. Pulled a 2.8 out of my 3rd gen and swapped in a 4.3. I was looking for aftermarket and only found the heads and cam. Which only did so much.

Yes

My next oil change in my Trailblazer will be right at 200,000. I do have to add a quart every thousand miles though. Not quite sure what's up with that, but I bought it with over 150,000 miles, so there's not much telling how the previous owner kept up with it. Still runs buttery smooth though!

I honestly don't think you can beat the reliability of the 4200! I always liked the jeep 4.0 and they are good engine's,but compared to the 4200 they ain't nothing! My trailblazer now has just over 300,000 miles and runs absolutely like new! Mine loses a court of oil here and there, don't know why or where it goes? It doesn't burn oil, it has no leaks I can see? But just an amazing engine, transmission as well! I tow my Camaro with it all over the place, no problem! Just an amazing engine!!!

@@docsmallblock6584 You're giving me hope for my Trailblazer! I just rolled over 200,000 miles on it and it runs like a champ! I've been very proactive in changing out ALL of the fluids (including transmission, diff, t-case, etc), so hopefully that will keep things running strong for several more years!

​@@docsmallblock6584 I had an 09 TB with 346k miles on it when I was T-boned in a crash, and it was totaled. I drove that thing back and fourth to 7 or 8 different states every 2 weeks for work towing a 5x8 enclosed job trailer for 8 + years prior to that. It had 90+?k miles on it when I bought it. Parts replaced are... Fan clutch... Lol. Of course I did. Water pump Passenger wheel bearing 02 sensor (upstream I believe) Front sway bar links Both rear gate shocks on window Radiator The Water pump Fan clutch and Radiator were all the same incident. I spent so much road time in that thing I would have put another motor or trans in it if I ever had too. It had the cloth seats, and pos interior door handle trim pieces, and I would get busy, and let my oil change light run on for too long after sometimes, but I loved my TB and I trusted it to take me anywhere, because it always did. I even pulled my sons buddy's 4wd Duramax diesel out of a stuck in the mud situation. We gave that kid so much sht afterwards for quite a while after that little thing pulled that pretty damn heavy, and large truck out. Someone wrote "Duramax Towing $25 for 25 feet" on the dirty rear door of my TB to remind him I never did volunteer to him, the mechanics behind a kinetic snatch strap I bought a GMC sierra afterwards for a work vehicle. Last year I bought a 06 TB LZ? if i remember? It was a good deal and I didn't need it at all, but I wanted it. All leather, Bose stereo, rear DVD, heated 1 & 2 position memory seats, interior is almost perfect, it even still had the factory DVD remote control, with 164k miles for $1500 due to needing wheel bearing & cv shaft. I still had my old TB out back, will a fairly new front wheel bearing assy, and a CV axle, that was just fine. I decided to take it on a 1820 mile round trip for job, with same trailer, after driving it around home for a few hundred miles and trusting it. One of the guys who I took out with me was happy as hell when I did this, as he had several thousands of memories living in the old TB. The seats were MUCH better, and I was looking at a different color hood when staring at the road. It didn't smell like cigarette butts and old rear door carpet beer spills or fast food trash bags, smelly ass dudes who worked 12 hrs, bar room hook ups and / or regrets. But it was good enough. And very familiar.

@@Kcducttaper1How’s it going now? I just bought a 2002 w/100k miles. It runs as smooth as my 2019 Acura RDX. You guys are giving me hope I can stretch my $2900 to 150k miles or more.

Yeah but for what it would cost to do that you could just get a v8 and be in the 4 digits range.

@@SoulTouchMusic93 nope. All thats needed is a reground cam and have been proven to hold over 700whp. Thise engines are incredibly durable and can make a lot of power for cheap. The 4200s can make around 550whp completely bone stock with a turbo. Stock pistons, heads, cam, valvetrain, bottom end, everything.

they make a 3.5 inline 5

I WOULD LOVE THIS !!

I’ve heard it can make like 700 on the stock bottom end. I’ve got an envoy that I plan on putting twins on next summer

@@epicbuildzgarage4674 yep always heard the engine is good for 500hp daily

WELCOME ABOARD

Where do you find all those parts at? I can't find them anywhere

@@chrishansen7004 just got to know where to look!!

Power Block built one of those 292s up once with a turbo.

I remember reading an article in Hot Rod back in the 90s, where a guy built a turbo 292 for his '37 Coupe, and that beautiful folder-tan machine ran 10s!

Right on! I haven't yet seen another one with the miles like I had still going strong. Many 200k plus however. I had an 09 TB with 346k miles on it when I was T-boned in a crash, and it was totaled. I drove that thing back and fourth to 7 or 8 different states every 2 weeks for work towing a 5x8 enclosed job trailer for 8 + years prior to that, including Colorado on I-70 yanking that trailer up a 7 or 8% grade at 70 mph. It had 90+?k miles on it when I bought it. Parts that I replaced are... Fan clutch... Lol. Of course I did. Water pump Passenger wheel bearing Passenger CV axle 02 sensor (upstream I believe) Front sway bar links Both rear gate shocks on window Radiator The Water pump Fan clutch and Radiator were all the same incident. I spent so much road time in that thing I would have put another motor or trans in it if I ever had too. I never did question if that thing would get me there, because it never gave me a reason too. I was absolutely getting curious about how far that thing was going to go. No noticeable blow by. And what would make it the longest; = Motor or Trans. = Both factory stock. @346k. It had the cloth seats, and pos interior door handle trim pieces, and I would get busy, and let my oil change light run on for too long after sometimes, but I loved my TB and I trusted it to take me anywhere, because it always did. I even pulled my sons buddy's 4wd Duramax diesel out of a stuck in the mud situation. We gave that kid so much sht afterwards. lol I never did volunteer to him, the mechanics behind a kinetic snatch strap. HE... He.. he. I Replaced it with a 1500 sierra for work. 5.3 8 speed trans. Very nice. Last year I bought a 06 TB LZ? if i remember? It was a good deal and I didn't need it at all, but I wanted it. All leather, Bose stereo, rear DVD, heated 1 & 2 position memory seats, interior is almost perfect, it even still had the factory DVD remote control, with 164k miles for $1500 due to needing wheel bearing & cv shaft. I still had my old TB out back, will a fairly new front wheel bearing assy, and a CV axle, that was just fine. I just wanted it back. That's as close as I can get. We have been making friends with each other when I'm home.

The "quad 4" Used in Sunfire GT, Chev Cavalier 2.4 etc. Also used in Beretta GT and others.

@@rdallas81 if I had recommended the 2.3, I'd have written "Quad 4"

That new 4.3 is garbage it's got direct injection its not as reliable. ND it doesn't sound as good as the earlier 4.3

Plus this comparison had the old vortec 4.3 with an 80's style carb+blow-thru which made power, but would have rather seen it done with EFI to which I'm sure most here would have thought it might have been tested prior to watching.

@@jackdaniels2657 That is a matter of Subjective Opinion. And I know of several that are in Fleet Trucks that seem to be reliable. What was actually "Trash" was the Atlas engine, many known Failures with that engine...Too Bad GM rushed it to market...

@@misters2837 those atlas otors are junk. If gm was smart they would've fixed the flaws instead redesigning a new engine with cost much more money. 4. 3 eco tec is junk trust me. Direct injection is garbage it always has a misfire u gotta constantly add injector cleaner. The only good thing bout that motor is nobody buys them

@@misters2837 the worst part is it has cylinder deactivation ND vvt that's just as bad as the lt4. Funny thing is the lt4 has all the new technology but still makes roughly the same. I mean if I took an ls motor nd got rid of powersteering pump I could gain 30 hp if I bumped the compression to the same as lt4 I'll get just as much power. The difference is longevity. The lsx motor was manufactured to go 500,000 the lt4 was manufactured for 250,000 that's why warranties now for power train are only good for 3 years or 36,000 miles where the lsx was good for 10 years or 100,000. Same thing with the 4.3 early model VS generation v 4.3

3.8 buick and 3.9 high value engine would be a good comparison

@@PtheeGoon2011 Richard could easily make these comparisons as he has already pulled and ran the 3800 SC. Which even the 3800 SC bone stock only matches the NA High Value 3.9 in power. It would be cool if he got cams and a set of ZZ heads for the 3800 just to see how good the 3800 could be.

I was surprised to see that the new Supra can come with a straight 6. Purdy cool

@@spacepope-1 it come with a bmw i6

The lu3 is a stout block

The engine was not built for power. It is already in it's home. Maybe later on he can pick one up and big bang it.

I still see more 4300s on the road, reliable engine. You forget the Syclone/Typhoon

@@shadowopsairman1583 I did not forget. I had a brand new 1988 S10 4.3 I bought in Sept 1988. Drove it 8 years. Kicked ass. Beat a lot of Mustang GTs with it.

turbo

@@richardholdener1727 Yeeeess 😁 It's the only answer. I could use a limited slip and the traction control is a bit...aggressive, but 70 more hp to the ground would be beautiful

All good

Evidently 310 cid seems to be the target size For these things. 650-675 horse is not out of the realm of possibility for a properly prepped race engine. I would expect that the off-road guys would de-tune for longer desert races.

91 pump gas, AF and timing was optimized for each (no more hp to be had), all specs are available on line-the engine size is not estimated

3.7 is a very good engine. Seen those with 400,000 miles and burn no oil.

Promax makes heads

And like he said anything that will bolt to the front of a SBC will bolt right up to the 4.3. Just need more head and intake options.

@@treenutz360 they're no better than stock vortec

@@fastnasty6627 head and intake are the biggest hurdles. Also no affordable aftermarket crank..