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Small Block Ford GT40 4.030 Bore Flat Top Piston View

Small Block Ford Flat Top -4.7cc GT40 4.030 Bore, 3.500 stroke, 6.200 rod 11.2 to 1 Comp with 58cc head (CP Bullets BFRS6070-030)

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CP Bullets Standard Small Block Ford Flat Top Performance Piston

Small Block Ford Flat Top -6.6cc All 20 Deg.4.000 bore, 3.000 stroke, 5.090 rod 60cc head 8.9 to 1 comp (CP Bullets BF6000-STD)

Small Block Ford Flat Top -4.7cc GT40 4.045 Bore, 3.500 stroke, 6.200 rod 11.2 to 1 Comp with 58cc head (CP Bullets BFRS6070-045)

These Pistons are not held in stock in Australia. We ship every Friday from CP Carrillo so please allow up to 2 weeks for delivery to you.
AUD$1,740.91
SKU
BFRS6070-045
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Make

Ford

Engine Type

Small Block

Part Number

BFRS6070-045

Bore (in)

4.045

Stroke (in)

3.5

Rod Length (in)

6.2

Comp Height

1.53

Head Type

GT40/ 351W

Head CC

58

Dome / Dish Height

FT

Dom/Dish CC

-4.7

Compression Ratio

11.2

Pin

.927 x 2.250

Ring Thickness

1.2 x 1.2 x 3.0mm

VR Depth

-.285 / SP

Cubic Inch

360

Piston Weight

428

Style

FT

Valve Reliefs

2 VR's

Gas Port

No

More Information
Product Name Small Block Ford Flat Top -4.7cc GT40 4.045 Bore, 3.500 stroke, 6.200 rod 11.2 to 1 Comp with 58cc head (CP Bullets BFRS6070-045)
Brands CP Carrillo
Engine Ford V8, Small Block Ford
Make Ford

Delivery & Freight

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If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).

What information do I need to match these pistons to my engine?

You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.

How should ring gaps be set for these pistons?

Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.

Are forged pistons suitable for street engines?

Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.

What is the ideal application for the BFRS6070-045 pistons?

The BFRS6070-045 pistons are designed for Small Block Ford engines, particularly those using GT40 or 351W heads. They are suitable for high-performance applications aiming for a compression ratio of 11.2:1, making them ideal for street or mild race setups.

What machining considerations should I keep in mind when using these pistons?

When installing the BFRS6070-045 pistons, ensure that the bore clearance is set correctly as per your engine's specifications. Additionally, verify that the ring gaps are adjusted for your specific application, as this can affect performance and reliability.

What is the weight of the BFRS6070-045 pistons and how does it affect performance?

The BFRS6070-045 pistons weigh 428 grams each. While this weight is typical for performance pistons, it’s important to balance the entire rotating assembly to minimise vibration and ensure optimal engine performance.

Do I need to modify my engine to fit these pistons?

Depending on your specific engine setup, you may need to perform some modifications, such as ensuring adequate clearance for the valve reliefs and checking for proper fitment with the connecting rods. Always consult with your engine builder for precise requirements.

What type of fuel is recommended for engines using these pistons?

For optimal performance with the BFRS6070-045 pistons, it is recommended to use high-octane fuel, especially given the 11.2:1 compression ratio. This will help prevent detonation and ensure reliable operation under load.