40805 Diamond Pistons BB Ford 429 Boss Forged Flat Top 4.390 Bore

Fits BB Ford 429 Boss, Bore 4.390, Stroke 3.850, Rod Length 6.605, Flat Top -7.0cc, Set of 8 Pistons, Made to order

$1,398.38

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

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Description

Diamond Pistons are some of the best aftermarket pistons on the market. Trust your new engine with a set of Diamond Pistons
Big Block Ford 429 FE Series Pistons are designed to fit OEM and Motorsport "Boss" heads: E2ZM & E3ZM and the new Kaase Hemi heads. Designed with pump gas friendly ratios as restoration/replacement pistons and can be used with small nitrous kits. Premium 8620 wrist pins are included. "O" ring volume=2.75cc for vintage engines. Top ring down from piston crown .375". Valve relief depth=.275" intake and .269" exhaust. Designed for 2.400" diameter intake valves and 1.900" exhaust valves. Standard 1/16 1/16 3/16 ring land

Compression Ratio with 84cc Heads 10.2:1
Compression Ratio with 90cc Heads 9.7:1
Advertised piston weight 699 grams
Made to order

Specifications

More Information
CNC Part Number	DRP-40805
Price	$1,398.38
Sold As	Set
Manufacturer's Part Number	40805
Brands	Diamond
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Ford BB
Bore Size	4.390
Crankshaft Stroke	3.850
Rod Length	6.605
Piston Type	Flat Top
Compression Height	1.785
Piston Material	2618 Forged
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	1.040
Custom Notices	⚠ PROP 65 WARNING

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