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

Special Price $1,190.78 Regular Price $1,337.95

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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
Price	$1,337.95
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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