5.7 Short block Turbo that will fit in a 1985 Monte Carlo?
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If all you’re looking for is 310-330 hp then you don’t need a turbo. A healthy V-8 will easily produce that number.
Ford Motor Company’s 2.0 Eco boost is a stout little engine that has higher horsepower and torque specs than your old 4.3 V6. It will feel faster since torque is strong and it comes in fast.
I will never talk anyone out of putting a turbo on anything. There is so much talk of how poor the performance was of these cars and what is needed to wake them up.
Several things to keep in mind about boost, every motor made will handle 7-9 psi without grenading if you can tune. And 9 psi will increase your current motor's HP and performance by 50% - i.e. 200hp will become 300, 250 will become 375. So your truck motor program that is a 250ish hp motor will become close to 400. Next is the streetableness of boost. No need for big cams or fuel systems until you
start running 10+psi. A properly tuned stock motor will cruise as if there is no power adder, implying fuel economy will not suffer until the boost gauge starts reading positively (mostly.) And often you can improve fuel economy with a turbo when not in boost. Third, the motors that no one wants such as 260's, 305's can turn your rear tire into a smoke machine with the addition of a turbo.
If you already have a 350, then use it and keep the boost low and you'll be happy. But 300hp, pffffff, that will be a thing of the past lol.
Several things to keep in mind about boost, every motor made will handle 7-9 psi without grenading if you can tune. And 9 psi will increase your current motor's HP and performance by 50% - i.e. 200hp will become 300, 250 will become 375. So your truck motor program that is a 250ish hp motor will become close to 400. Next is the streetableness of boost. No need for big cams or fuel systems until you
start running 10+psi. A properly tuned stock motor will cruise as if there is no power adder, implying fuel economy will not suffer until the boost gauge starts reading positively (mostly.) And often you can improve fuel economy with a turbo when not in boost. Third, the motors that no one wants such as 260's, 305's can turn your rear tire into a smoke machine with the addition of a turbo.
If you already have a 350, then use it and keep the boost low and you'll be happy. But 300hp, pffffff, that will be a thing of the past lol.
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What I am swapping for is a 5.7l TBI, because apparently that's the easiest swap for this v6 in it now. If I could get away with putting a turbo on this 4.3 v6, I would, but nobody can tell me if Vortec heads will work on the current 4.3 I have.
I could make this v6 amazing with:
marine intake:
Performer Vortec V6 Marine Intake Manifold for GM 90 Deg V6 (4.3L)
Edelbrock Marine Vortec V6 4.3 Intake Manifold for Chevy 4.3L V6 Marine Engines w/Vortec Style Cylinder Heads. Cooling Water Passages are Lined with Brass to Prevent Corrosion. Accepts Q-jet or 4150-Style Square-Bore Marine Carbs. Non-EGR
www.edelbrock.com
Vortec head no one will confirm works on my engine:
CHEVROLET Chevrolet Performance 12691728 Chevrolet Performance Vortec Cylinder Heads | Summit Racing
Free Shipping - Chevrolet Performance Vortec Cylinder Heads with qualifying orders of $99. Shop Cylinder Heads at Summit Racing.
www.summitracing.com
this PCM:
12201281 2002 Chevrolet S10 4.3L VIN Programmed ECM PCM | 52369718
Each ARES Technologies ECM, PCM, BCM, or TCM module is rigorously tested, programmed to your VIN, and updated with the latest software version before shipment. Our customers benefit from free domestic shipping on all purchases and a 30-day hassle-free return policy, as well as extended lifetime...
arestechnologies.com
This wiring harness:
Painless Performance 60215 Painless Performance Fuel Injection Harnesses | Summit Racing
Free Shipping - Painless Performance Fuel Injection Harnesses with qualifying orders of $99. Shop Fuel Injection System Wiring Harnesses at Summit Racing.
www.summitracing.com
That's $1,200 bucks.
I can drop 650 bucks on top of that and have a Turbo 4.3 Vortec that I would keep at 7-8 boost. That would scream. The Vortec heads alone add 15-30HP. The turbo can add 100hp. And with a light v6 block in there... this would be a monster daily driver.
But nobody anywhere has been able to help me confirm I can upgrade my 4.3 to a Vortec 4.3.
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Check with the GMC Typhoon/Syclone guys for what's needed. As for heads, all SBC based V6's can swap heads so as long as you got the right intake (not sure if they had the same changes like it's big brother) to match the heads.
I can confirm that the 350 Vortec heads you linked will not fit your 4.3. Satisfied?
See? Two people, as far as I can tell, just said the exact opposite thing about the one thing I can't figure out.
"Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. Features include fast burn combustion chambers, and a high-velocity port design. They require the use of a Vortec-style intake and self-aligning rocker arms, and come complete with valves, springs, and retainers"
Dude, you’re not understanding the terminology.
Regarding the V6, heads are interchangeable in all 4.3’s but you have to you the correct style intake, and rockers for the heads you choose. Vortec is newer, but there are varying vortec V6 intakes.
Regarding the V8, all stock Gen 1 SBC heads are compatible on a 327 and larger displacement Gen 1 SBC. Again, you have to use the correct rockers for the head type. The Vortec intake is different than the non Vortec.
What was referenced above is a SBC (8 cylinder) based V6. The 4.3 V6 head they were referencing is a SBC head design minus one cylinder.
All Gen 1 SBC motor mounts are the same and have the same transmission bolt pattern.
As mentioned previously, you’re getting tangled up in terminology. The other posters know exactly what will and won’t work from what I’m reading.
If you have a SBC with TBI from a truck from the late 80’s to late 90’s, then you can use Vortec V8 heads. But you will need a different intake than what was on the truck originally. And if you want to use the stock cam and valvettain, then you will need the rockers from the Vortec heads as well. The Vortec rockers are referred to as self aligning. There is an option to use the older style rockers, but you will need to upgrade the heads to screw in rocker studs and buy pushrod guide plates.
Regarding the V6, heads are interchangeable in all 4.3’s but you have to you the correct style intake, and rockers for the heads you choose. Vortec is newer, but there are varying vortec V6 intakes.
Regarding the V8, all stock Gen 1 SBC heads are compatible on a 327 and larger displacement Gen 1 SBC. Again, you have to use the correct rockers for the head type. The Vortec intake is different than the non Vortec.
What was referenced above is a SBC (8 cylinder) based V6. The 4.3 V6 head they were referencing is a SBC head design minus one cylinder.
All Gen 1 SBC motor mounts are the same and have the same transmission bolt pattern.
As mentioned previously, you’re getting tangled up in terminology. The other posters know exactly what will and won’t work from what I’m reading.
If you have a SBC with TBI from a truck from the late 80’s to late 90’s, then you can use Vortec V8 heads. But you will need a different intake than what was on the truck originally. And if you want to use the stock cam and valvettain, then you will need the rockers from the Vortec heads as well. The Vortec rockers are referred to as self aligning. There is an option to use the older style rockers, but you will need to upgrade the heads to screw in rocker studs and buy pushrod guide plates.
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