Project Danny LVito: Turbo LV3 Dyno Dominance
If you dare utter “Chevy 4.3” at your local car meet, you’re not likely to spark many conversations about its performance. And if you do, it’s usually only about the rare all-wheel-drive turbo GMC Syclones and Typhons from the early 90s. However, back in 2014, GM introduced an all-new 4.3-liter V6, named the LV3, which borrows its architecture and technology from the Gen V LT V8 family. Companies like Scoggin Dickey recognized this potential and decided to push the limits on their in-house engine dyno with “Project Danny LVito”. The mission: to see how far the stock parts can be pushed through some brutal turbo LV3 dyno testing.
Old VS New
The only thing the old 4.3-liter V6 and the new LV3 V6 share is the general concept behind their design: take an existing V8 platform and remove two cylinders to make a reliable V6 utilizing the lowest development budget possible. The old iron 4.3 came out in 1985 and was based on the Gen 1 small-block Chevy, specifically the 5.7-liter (350 cubic inch) version, and is a copy of that design with two less cylinders. Other than the turbo LB4 4.3 in the 1991-1993 Syclones and Typhons, these are most known for being reliable, low-revving workhorses in trucks and vans.
The factory does not offer a turbo LV3 V6; it is available only available from GM in naturally aspirated form. The modern LV3 4.3-liter V6 draws its design inspiration from the 5.3-liter L83 Gen V V8 found in half-ton trucks. They share the same 90-degree “V” architecture, deck height, direct-injection EFI, all-aluminum construction, and even the cylinder heads are the same (minus two chambers, of course). The bore is a little bigger than the 5.3’s at 99.6mm (3.921 inches), while the 92mm stroke (3.622 inches) remains the same between them. Once tuners and hot rodders noticed the performance potential of the 5.3-liter Gen V V8, they began to look at the modern 4.3 as a potential compact performance platform.
LV3 Performance
One of the first to see what the modern LV3 could do was Dan Jost at Jost Boosted Performance, who took his Buick Grand National and swapped the turbo 3.8 V6 for an turbo LV3 with a custom ground camshaft and a big single turbo. The results were so impressive that they sparked interest across social media and from performance parts giants like Scoggin Dickey Parts Center (known as SDPC) and Brian Tooley Racing.
With the help of Nick Adams, Dane Arnold, Kurt Urban, and the team at SDPC Raceshop, Scoggin Dickey was able to develop and offer the very first DOD delete kits and off-the-shelf performance camshafts for the modern 4.3-liter LV3 V6. Nick, Dane, and Kurt decided to take their curiosity a step further and conducted dyno testing on SDPC Raceshop’s in-house engine dyno to see how the performance increased with their camshaft designs, including boosting the all-stock long block to see its capabilities for themselves.
Under Pressure
SDPC Raceshop’s first turbo LV3 dyno testing back in the summer of 2022 proved what they theorized: the modern 4.3 responded well to performance upgrades like its Gen V V8 big brothers. This 300-pound “buzzin’ half dozen” V6 churned out a respectable 360 horsepower and 365 lb-ft of torque in naturally aspirated form on pump gas with nothing more than their Stage 2 LV Cam and headers. Next, the headers were removed for a custom single turbo setup using the stock truck exhaust manifolds that Nick welded himself the night before to mount a single 61mm turbo to the LV3. At 14.5 PSI of boost pressure, the little 4.3 produced a final power number of 644 horsepower and 730 lb-ft of torque.
The goal of this project was to validate our forged piston and rod combo for the V6, which was based on the same setup we used in our 2000hp L8T –Dane Arnold, SDPC–
Keep in mind, this LV3 long block was completely stock, down to the head gaskets and head bolts, as well as the rod bearings, main bearings, oil pump, and piston ring gap. A truck V6 generating the same horsepower as a supercharged LT4 V8 from the Z06 and ZL1s, with just a cam swap and some boost, is very impressive. But Kurt wanted more. He knew this platform could handle a bigger turbo and more boost, but the rods and pistons were the weak link. This led to Urban developing a forged rod and piston combo so they could do more turbo LV3 dyno testing to see if the 4.3-liter V6 could hit the magical 1,000-horsepower number.
Project Danny LVito
In his spare time, Kurt spent several months working on the LV3 to get it ready for its big day on the engine dyno. The high-mileage stock block was final honed to 3.925 inches to fit the custom Wiseco forged pistons and GFX rings in the SDPC rod and piston kit. The untouched stock crankshaft was rebalanced for the new reciprocating weight of the pistons and Molnar 6.125-inch H-beam Power Adder forged rods and reinstalled into the block with the stock main caps and ARP main studs.
The top end was reassembled with stock GM head gaskets, ARP head studs, and the stock heads. Even though companies like Frankenstein offer CNC porting on the stock castings, there is no cylinder head porting done for this turbo LV3 dyno project, just a simple refresh on the high-mileage used heads. Kurt and Dane are returning to the dyno to achieve a big number without a crazy amount of work, similar to how the DIY garage builder would do it with their project, not build a “spare no expense” dyno queen.
The camshaft is a custom-ground hydraulic roller by Cam Motion that Kurt spec’d himself. The current cam cores used for their shelf grinds are very limited, and we were told that this cam is not drastically bigger than the Stage 2 camshaft they currently offer. With only 212 degrees of duration on the intake lobe and 218 degrees on the exhaust, 0.564-inch intake and 0.558-inch exhaust lift, and a 113-degree LSA, Kurt stated, “it produces over 15 inches of vacuum and idles like a kitten”.
For lifters and pushrods, the choice was to step up to Johnson 2110R lifters and Manton pushrods to actuate the stock rocker arms. The factory rocker arms were upgraded with a CHE trunnion upgrade and PSI beehive valve springs hold the valves closed. The stock heads are topped off by a pair of billet aluminum anodized black Motion Raceworks valve covers. The valve covers are not necessary for turbo LV3 dyno testing, but they look drastically better than the stock ones and make routing the custom PCV system much easier.
A Little Fab Work Makes The Dream Work
The intake manifold is Kurt’s very own handiwork, taking a Holley high-ram LT1 intake base off the shelf and chopping it down to fit the six-cylinder LV3. Under the lid is a custom air-to-water intercooler built to handle the high intake charge temps while aiming for the 1,000-plus horsepower goal. The 102mm throttle body and ‘Y’ inlet is from Motion Raceworks as well.
Kurt’s own fabrication talents are further showcased with the custom tubular stainless lead pipes feeding a pair of mirror-image 6262 turbos from HPT. Connecting the exhaust ports to the lead pipes are a pair of chopped L8T take-off exhaust manifolds from a crate engine that the SDPC Raceshop had in the trash pile. If you haven’t caught on yet, the LV3’s design is so similar to the Gen V V8s that most V8 parts will bolt up with a little fab work and some ingenuity. GFB wastegates and blow-off valves control pressures on the hot and cold sides. While the stock LV3 is direct-injected, port injection controlled by Holley EFI was used to keep up with fuel demands fot this turbo LV3.
Turbo LV3 Dyno Numbers
Kurt started with just 8psi of boost right off the bat and immediately outdid his previous best from 2022 with 664 horsepower. But he was just letting the 4.3 stretch it legs a little to start. When we asked how much boost he expected to push through this little V6 by the time it was all said and done, he simply smirked and said, “All it will take.”
The 415 Horsepower C4 Corvette project on Stay Tuned takes everything people dismiss about cheap C4s and turns it into fuel. Host Tony Angelo and the crew set out to build a street-ripping C4 that can hang with, and arguably embarrass, a factory C4 ZR1, all while staying deep in budget territory.
At the heart of the build is a dirt-cheap roller small-block that has already proven itself on the engine dyno. With a budget-top-end kit totaling about ,850, the combo churned out 415 horsepower and 390 lb-ft of torque. That number alone already edges out the original C4 ZR1’s 405 horsepower, but the real trick is how they deliver it in the car with modern control and reliability.
Holley Fuel Injection On A Classic Small Block
Instead of dropping the engine back in with a carb, the team converts the Corvette to full Holley EFI. A four-barrel style multi-point fuel injection intake goes on, topped with a 1050 cfm Holley throttle body that still works with the factory throttle cable. Underneath, short 42 lb injectors feed each cylinder, controlled by a Holley Terminator X and a dual sync distributor acting as cam and crank sensor.
They add a bronze distributor gear to play nice with the billet cam, wire in an MSD 6A box for spark, and run all fresh sensors and wiring through a custom bulkhead they 3D printed to replace the crusty factory harness pass-through. The engine bay keeps an old-school look with plug wires and a distributor, but it behaves like a modern EFI setup.
Underneath The Car: Headers, Fuel, And Drivetrain
Under the Corvette, the crew fights typical C4 packaging headaches to install ceramic-coated long tube Hedman headers, dealing with dipstick tube issues, tight plug access, and 80s GM compromises. Out back, a 340-liter-per-hour Holley in-tank pump, paired with a D Works install kit, gives the fuel system enough headroom for future power.
A fresh flywheel and Summit street strip clutch go in, backed by a rebuilt pivot ball and a solid Corvette-style power plant frame that ties the transmission and differential together to keep driveline slop in check.
Budget C4, ZR1 Attitude
By the end, the total sits around ,000, including the ,000 purchase price of the car, the top-end kit, and the Holley fuel injection setup. In freezing Pennsylvania weather, the open header 415 Horsepower C4 Corvette fires up, idles clean, and rips around snowy roads with the attitude of a budget C4 ZR1 killer. It is loud, responsive, and exactly the kind of home-built hot rod that makes a cheap C4 feel like a proper monster.
If this C4 ZR1 killer build hits close to home, it is worth diving into our own small-block Chevy project as well. We recently broke down our SBC 350 rebuild, covering top-end choices, budget realities, and the lessons learned along the way.
– Turbo LV3 Dyno Dominance: Project Danny LVito – Chevy 4.3 performance – GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost.” alt=”GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost. – C4 ZR1 Killer For A 1/4 The Price: Built By Stay Tuned – turbo LV3 – Car Junkie Mag” data-height=”1600″ data-id=”4865″ data-link=”https://carjunkiemag.com/?attachment_id=4865″ data-url=”https://carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-010-1024×683.jpg” data-width=”2400″ src=”https://i0.wp.com/carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-010-1024×683.jpg?ssl=1″ data-amp-layout=”responsive” />The 415 Horsepower C4 Corvette project on Stay Tuned takes everything people dismiss about cheap C4s and turns it into fuel. Host Tony Angelo and the crew set out to build a street-ripping C4 that can hang with, and arguably embarrass, a factory C4 ZR1, all while staying deep in budget territory.
At the heart of the build is a dirt-cheap roller small-block that has already proven itself on the engine dyno. With a budget-top-end kit totaling about ,850, the combo churned out 415 horsepower and 390 lb-ft of torque. That number alone already edges out the original C4 ZR1’s 405 horsepower, but the real trick is how they deliver it in the car with modern control and reliability.
Holley Fuel Injection On A Classic Small Block
Instead of dropping the engine back in with a carb, the team converts the Corvette to full Holley EFI. A four-barrel style multi-point fuel injection intake goes on, topped with a 1050 cfm Holley throttle body that still works with the factory throttle cable. Underneath, short 42 lb injectors feed each cylinder, controlled by a Holley Terminator X and a dual sync distributor acting as cam and crank sensor.
They add a bronze distributor gear to play nice with the billet cam, wire in an MSD 6A box for spark, and run all fresh sensors and wiring through a custom bulkhead they 3D printed to replace the crusty factory harness pass-through. The engine bay keeps an old-school look with plug wires and a distributor, but it behaves like a modern EFI setup.
Underneath The Car: Headers, Fuel, And Drivetrain
Under the Corvette, the crew fights typical C4 packaging headaches to install ceramic-coated long tube Hedman headers, dealing with dipstick tube issues, tight plug access, and 80s GM compromises. Out back, a 340-liter-per-hour Holley in-tank pump, paired with a D Works install kit, gives the fuel system enough headroom for future power.
A fresh flywheel and Summit street strip clutch go in, backed by a rebuilt pivot ball and a solid Corvette-style power plant frame that ties the transmission and differential together to keep driveline slop in check.
Budget C4, ZR1 Attitude
By the end, the total sits around ,000, including the ,000 purchase price of the car, the top-end kit, and the Holley fuel injection setup. In freezing Pennsylvania weather, the open header 415 Horsepower C4 Corvette fires up, idles clean, and rips around snowy roads with the attitude of a budget C4 ZR1 killer. It is loud, responsive, and exactly the kind of home-built hot rod that makes a cheap C4 feel like a proper monster.
If this C4 ZR1 killer build hits close to home, it is worth diving into our own small-block Chevy project as well. We recently broke down our SBC 350 rebuild, covering top-end choices, budget realities, and the lessons learned along the way.
– Turbo LV3 Dyno Dominance: Project Danny LVito – Chevy 4.3 performance – GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost.” alt=”GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost. – C4 ZR1 Killer For A 1/4 The Price: Built By Stay Tuned – turbo LV3 – Car Junkie Mag” data-height=”1600″ data-id=”4868″ data-link=”https://carjunkiemag.com/?attachment_id=4868″ data-url=”https://carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-013-1024×683.jpg” data-width=”2400″ src=”https://i0.wp.com/carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-013-1024×683.jpg?ssl=1″ data-amp-layout=”responsive” />The 415 Horsepower C4 Corvette project on Stay Tuned takes everything people dismiss about cheap C4s and turns it into fuel. Host Tony Angelo and the crew set out to build a street-ripping C4 that can hang with, and arguably embarrass, a factory C4 ZR1, all while staying deep in budget territory.
At the heart of the build is a dirt-cheap roller small-block that has already proven itself on the engine dyno. With a budget-top-end kit totaling about ,850, the combo churned out 415 horsepower and 390 lb-ft of torque. That number alone already edges out the original C4 ZR1’s 405 horsepower, but the real trick is how they deliver it in the car with modern control and reliability.
Holley Fuel Injection On A Classic Small Block
Instead of dropping the engine back in with a carb, the team converts the Corvette to full Holley EFI. A four-barrel style multi-point fuel injection intake goes on, topped with a 1050 cfm Holley throttle body that still works with the factory throttle cable. Underneath, short 42 lb injectors feed each cylinder, controlled by a Holley Terminator X and a dual sync distributor acting as cam and crank sensor.
They add a bronze distributor gear to play nice with the billet cam, wire in an MSD 6A box for spark, and run all fresh sensors and wiring through a custom bulkhead they 3D printed to replace the crusty factory harness pass-through. The engine bay keeps an old-school look with plug wires and a distributor, but it behaves like a modern EFI setup.
Underneath The Car: Headers, Fuel, And Drivetrain
Under the Corvette, the crew fights typical C4 packaging headaches to install ceramic-coated long tube Hedman headers, dealing with dipstick tube issues, tight plug access, and 80s GM compromises. Out back, a 340-liter-per-hour Holley in-tank pump, paired with a D Works install kit, gives the fuel system enough headroom for future power.
A fresh flywheel and Summit street strip clutch go in, backed by a rebuilt pivot ball and a solid Corvette-style power plant frame that ties the transmission and differential together to keep driveline slop in check.
Budget C4, ZR1 Attitude
By the end, the total sits around ,000, including the ,000 purchase price of the car, the top-end kit, and the Holley fuel injection setup. In freezing Pennsylvania weather, the open header 415 Horsepower C4 Corvette fires up, idles clean, and rips around snowy roads with the attitude of a budget C4 ZR1 killer. It is loud, responsive, and exactly the kind of home-built hot rod that makes a cheap C4 feel like a proper monster.
If this C4 ZR1 killer build hits close to home, it is worth diving into our own small-block Chevy project as well. We recently broke down our SBC 350 rebuild, covering top-end choices, budget realities, and the lessons learned along the way.
– Turbo LV3 Dyno Dominance: Project Danny LVito – Chevy 4.3 performance – GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost.” alt=”GM’s modern 4.3-liter LV3 V6 rarely gets respect in performance circles, but SDPC set out to change that with boost. – C4 ZR1 Killer For A 1/4 The Price: Built By Stay Tuned – turbo LV3 – Car Junkie Mag” data-height=”1600″ data-id=”4867″ data-link=”https://carjunkiemag.com/?attachment_id=4867″ data-url=”https://carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-012-1024×683.jpg” data-width=”2400″ src=”https://i0.wp.com/carjunkiemag.com/wp-content/uploads/2026/02/Turbo-LV3-012-1024×683.jpg?ssl=1″ data-amp-layout=”responsive” />.
Since this session of turbo LV3 dyno testing with project Danny LVito is done with VP Racing MS109, Kurt jumped to 13psi of boost for the second run and made a seemingly effortless 817 horsepower and 697 lb-ft of torque. Keep in mind, SDPC isn’t here to paint the dyno room walls with oil and engine guts just for kicks; they want to see if GM’s fleet-duty V6 can handle big power with minimal mods like its Gen V V8 big brothers have proven to do. Kurt and Dane are doing this session of turbo LV3 dyno testing still utilizing the stock block, crankshaft, untouched cylinder heads and valves, oil pump, and head gaskets. Just their own off-the-shelf forged rod and piston kit and valvetrain to help handle the lofty four-digit horsepower goal.
The push to that 1,000-plus horsepower goal can come with its own set of challenges. As Kurt gradually increased the boost while testing the turbo LV3, the welds on the custom sheet-metal upper intake split at around 19 psi, where it was creeping past 900 horsepower. And no, we aren’t joking or making a Fast and Furious reference; they really “blew the welds on the intake”. The upper plenum was quickly removed and rewelded back together, with some extra bracing, to continue taking the punishment.
The split pin crankshaft was our biggest concern for durability as we pushed it. Kurt softened the boost down low so we weren’t loading the engine up with crank destroying torque. –Dane Arnold, SDPC–
Now that the induction won’t crack under pressure, Kurt upped the boost to almost 23psi, where the turbo LV3 produced 1,071 horsepower and 859 lb-ft of torque. The four-digit horsepower goal was met, and the little 4.3 wasn’t even breaking a sweat! HPT turbos said that at that power level, the 6262 turbos weren’t even in the most efficient area of their boost map and had room left for more.
The first pull to crack 1,000 horsepower took over 20psi, but the next pull at 31psi delivered the first four-digit torque number at 1,048 lb-ft and 1,305 horsepower. Torque is what kills connecting rods and crankshafts, and this testing was prove if the stock split-pin crankshaft could handle horsepower and torque at four-digit levels.
It was time to see what this modern V6 could do for the final dyno run, do or die; it was time for Kurt to give it all it could handle. The result was 1,403 horsepower at 6,800rpm and 1,125 lb-ft of torque at 6,400rpm! Peak horsepower came in at 31.6psi before peaking at 33.2psi at the 7,000rpm cutoff. With nothing more than a custom hydraulic roller cam and Scoggin Dickey’s forged rod and piston kit to go along with the boost, SDPC’s turbo LV3 dyno testing showed the world that you don’t need deep pockets, big cubes, or even eight cylinders to make some serious horsepower.
Six Cylinder Dominance
Will Scoggin Dickey offer turbo kits, custom intakes, and custom cams for the LV3? Most likely, not. But they will offer a bulk of the parts you need to build your very own turbo V6 that can easily handle over 1,000 horsepower. This dyno session wasn’t about new product development; this was simply a fun exercise to showcase the capabilities of the modern 4.3-liter V6 and the knowledge and ingenuity of the SDPC Raceshop team. While their expertise is quarter-mile-dominating big blocks, small blocks, LS, and LT V8s, Scoggin Dickey’s turbo LV3 dyno testing shows that they aren’t afraid to let their hair down and have some fun now and then with GM’s undersung engines. Makes us wonder: What will they do next?
