Ford 347: torque-forward small-block power.
Built around a seasoned OE roller block with forged internals and a street-friendly hydraulic roller cam. Strong torque, clean drivability, and a combo designed to work.
347 is the “street torque” choice — more shove than a 302, still small-block packaging.
Read why 347 →Everything important is listed: block, bore/stroke, heads, cam, carb, balance, and supporting parts.
View build spec →Converter, timing, octane, and exhaust all matter. We’ll help confirm your full setup.
Confirm fitment →
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At a glance
A quick scan before you dive deeper.
Build specification
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Engine specifications (HP/TQ + hard parts)
- HP: 415
- TQ: 430
- Block: Seasoned OE Roller Block 1987–1995
- Bore/Stroke: 4.040 x 3.400
- Displacement: 347CI
- Crankshaft: Scat nodular iron external balance 28oz
- Rods: Scat 4340 forged I-beam with ARP 8740 bolts
- Pistons: Forged 10:1 compression
- Rings: Moly
- Camshaft: Hyd. Roller
- Cam Specs: 220/224 @50 .512in/.512ex 112LSA
- Timing Chain: Double roller
- Cylinder Heads: Dart aluminum 58cc/170cc 2.02/1.60
- Rocker Arms: Aluminum 1.6 roller rockers
- Oil Pan: Fox Body (Mustang Dual Sump)
- Oil Pump: Melling high volume
- Balancer: External balance 28oz (with Scat kit)
- Flexplate/Flywheel: External balance 28oz 164 tooth (with Scat kit)
- Intake Manifold: Edelbrock Performer RPM #7121
- Carburetor: Quick Fuel 680 CFM vacuum secondaries, electric choke #HR-680cfm
- Fuel Pump: Mechanical fuel pump
- Distributor: Pro billet (upgraded melonite gear)
- Spark Plugs: Autolite #3923
- Spark Plug Wires: MSD 8mm #5541
- Water Pump: OE reverse rotation LH inlet
Engine info (oil, timing, firing order, converter, exhaust)
- Oil: Conventional / Non-Synthetic 10W30
- Oil Filter: Wix or K&N
- Timing: 34–36 Degrees
- Spark Plug Gap: .035”
- Firing Order: 13726548
- Octane: 91+
- Stall Converter: 2400–2800
- Exhaust: 1 5/8
Warranty
Why a 347?
A 347 stroker is the sweet spot when you want a small-block Ford to feel stronger everywhere — especially midrange torque — without jumping to a physically larger platform.
The “right” reason to pick a 347
- You want a noticeable torque increase vs a 302, especially through the midrange.
- You want street-friendly drivability with a hydraulic roller cam setup.
- You’re building a Mustang / Fox-body style combo where converter + gearing are part of the plan.
When you might prefer a different Ford engine
- 302: classic baseline power and easy street manners.
- 351W: more cubic inches and broader torque feel.
- 408 / 427 stroker: when you want big torque presence and aggressive pull.
Ford 347 FAQ
Fast answers that keep customers moving.
What fuel does this 347 require?
What stall converter should I run?
Is this engine externally balanced?
What timing and plug gap should I start with?
What firing order does it use?
What warranty is included?
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