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SBF FORD 347 PROBE FORGED PISTONS & RINGS FLAT TOP 4.040 BORE P8471F-040

Available

$429.00



Product Information

UPC372893108725
Product TypeShipped Product
Shipping Cost $16
Number of reviews 0

FORD SBF 347 PROBE FORGED PISTONS & RINGS 4.040 BORE SIZE FOR SBF FORD 347 ENGINES, FLAT TOP FOR USE WITH 5.4 BUSHED OR PRESS FIT RODS. .040 OVER.

These pistons do have the third (eyebrow) valve relief. These will accommodate the twisted wedge heads on the market.

Our PROBE Forged pistons are custom designed with an increase in compression height. This has many advantages. Here are a few facts about compression height and deck height.

Our custom made Probe pistons have a compression height that is .012 taller than nearly all catalog pistons on the market. We find this to be a very valuable feature. Since our pistons sit at a taller than normal compression height, you will only have to remove approx. .010 off the deck surface of a virgin block to achieve a zero deck. This also allows for future deck re-surfacing and still not ending too far below stock deck height.


Leaving the deck on your block thick makes for a stronger block that resists flexing and also runs cooler, as the deck thickness has a lot to do with the dissipation of heat. Blocks with decks cut down to any great amount are also prone to cracking. This is why our pistons are designed to sit flush, (zero deck) at .010 below stock deck height.

Another good feature about our pistons having a taller compression height is that the ring land above the top ring is much stronger by being .015 thicker. When pistons encounter the effects of detonation, it is not uncommon to see pistons with the ring land above the top ring broken off. The thicker ring land also makes a better heat sink.

Our custom made Probe forged pistons are made from 2618 aircraft alloy. We find this alloy to be much more suitable for high performance engines than the common 4032 forged alloy. You will usually see the higher end pistons on the market using 2618 aircraft alloy.

Why go with 2618 forged pistons? If you encounter certain tuning issues, detonation is highly probable, and its effects can cause severe damage to your engine. The 2618 forged piston is able to withstand the damaging effects from detonation to a higher degree than the lower cost 4032 forged pistons, especially non-forged hypereutectic pistons such as Speed Pro or Keith Black, and many others.

Our Probe forged pistons will clear most any valve size on the market with ease even with the use of large lift cams.

These pistons are also suitable for use with nitrous systems up to approx. 250hp and superchargers up to approx. 15 to 17lb.s of boost. For the slight increase in cost, this is the best value on the market.

PROBE FULLY FORGED REVERSE DOME DISH TOP PISTONS RATED AT 700+ HP. THIS SALE IS FOR A FULL SET OF PISTONS AND RINGS. PROBE PISTONS ARE 100% MANUFACTURED IN THE USA. THEY ARE ONE OF THE HIGHEST RATED PISTONS IN THE COUNTRY.

These pistons are for use with full floating bushed rods, or press fit. The compression height is 1.102 3 valve reliefs. Ring groove size 5/64 5/64 3/16. File fit Rings included. See full piston specs below


Item Code

P8471F-040

Vendor Name

PROBE

Product Type

PISTONS, CUSTOM MADE.

Product Model

RACING STREET/STRIP

Engine Displacement (cu.in.)

347

Engine Family

FORD - Small Block V8

Material

2618 Forged Aluminum

Base Bore (in)

4.000 + .040 = 4.040

Stroke (in)

3.4"

Rod Length (in)

5.4"

Compression Height (in)

1.102

Top Type

FLAT TOP

Net Head Volume (cc)

-5cc Has three valve reliefs.

Deck Thickness (in)


Wrist Pin Diameter (in)

.927

Wrist Pin Length (in)

2.500

Wrist Pin Weight (g)

Piston Weight


Pin Lock Type

Spiral

Ring Set #

DROP IN.

Top Ring Groove Size

5/64

Second Ring Groove Size

5/64 in.

Oil Ring Groove Size

3/16 in.

Top Ring Land (in)


Second Ring Land (in)


Bottom Ring Land (in)


Quantity

Sold in sets of 8.


Very Important Note!

Our sales staff has limited technical knowledge on this product and may not be able to answer many of the questions asked. Many of the questions asked are if we have pistons for certain applications. Please check our wide variety of pistons to see if what you need is listed. Be absolutely sure that you select the correct bore size and piston volume before purchasing. It is also important that you know what rod length you have. The rod length required is clearly stated in the ads. When searching for various size pistons, you can simplify your search by using common key words in the search bar. We update the technical information in our listings on a regular basis.

We are not responsible for collateral damage caused by the use of this product.


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