Ross Racing Pistons Forged Big Block Chevy Pistons Flat Top Dome Top

ROSS Racing Pistons are used in high performance and racing engines by knowledgeable engine builders the world over. They combine light weight, high strength, precision machining and premium materials to build a piston you can depend on for high horsepower, torque and reliability. We offer these superb pistons at very affordable prices.

Ross Racing Pistons offers pistons in both stocking and custom sets. In most cases you can find a stocking set to fit your needs. If you do not see the exact piston specs you want in a stocking piston, we will be happy to help you with a custom piston design. Custom pistons can be made for just about any type of engine. Please e-mail us and we will be happy to assist you with a custom piston order. We offer discounted pricing, even on custom pistons so please contact us for assistance with your custom piston needs and we will be happy to help you and give you a great price quote.

ROSS includes forced pin oilers and double spirolox on all of their stocking pistons. Pistons are balanced to plus or minus 2.5 grams throughout the set. You can buy replacement pistons one at a time as needed. The valve pockets are designed to handle most camshaft applications. The skirt design allows the pistons to work properly under intense heat and tremendous side loads without scuffing or splitting cylinder walls. Most normally aspirated pistons are designed to operate at .004 piston skirt to cylinder wall clearance. All ROSS stocking pistons include aircraft quality pins that are heat treated and end ground to work in full floated or press fit applications.

Please feel free to use our compression ratio calculator to help you decide on the piston specifications you want. Click here to go direct to our Compression Ratio Calculator or visit our Race Math Page.

Click on the part number in the list below for the item you are interested in for more information, pricing, or to order. You may also click the home button in the top right border to go to our home page. From there you can access our entire website. Search by part description or part number, browse through parts for your specific vehicle make, see news and special sale info and much more!

Scroll down to see all the available Ross Racing Pistons for Chevrolet Big Block engines.

CHEVY 409 PISTONS

ROSS 409 Chevrolet pistons are ideal for street or strip applications, and are suitable for nitrous systems of 250 horsepower or less. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality and are retained by double spirolox or can be press fitted into rods. Ring grooves are 5.64, 5/64, 3/16. They are a nominal 10.5-1 compression ratio piston.

454 and Stroker Flat Top Pistons Open and Closed Chamber

ROSS flat top Big Block pistons listed in this section feature special flat top forgings for maximum strength with minimum weight. Will work with open or closed chamber heads. Suitable for nitrous systems of 250 horsepower or less. Ideal for street and marine applications. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality, and are retained by double spirolox or can be press fitted into rods. Pin location (compression height) used on this piston will give .017 deck clearance in new (9.800 tall) block. Ring grooves are 1/16, 1/16, 3/16. Compression ratio shown in chart based on a head chamber volume of 118 cc.

9-1 Compression Open Chamber

ROSS 9 to 1 compression ratio Big Block pistons in this section feature special forgings for maximum strength. Will work with open chamber heads. Suitable for nitrous systems of 300 horsepower or less. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality, and are retained by double spirolox or can be press fitted into rods. Compression ratio is based on 118 cc heads and .050 piston to head clearance (deck and gasket combined). Ring grooves are 1/16, 1/16, 3/16.

Moderate Compression Open Chamber

ROSS moderate compression ratio Big Block pistons in this section feature special hollow dome forgings for maximum strength with minimum weight. Will work with open chamber heads. Suitable for nitrous systems of 250 horsepower or less. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality, and are retained by double spirolox or can be press fitted into rods. Compression ratio is based on 118 cc heads and .050 piston to head clearance (deck and gasket combined). Ring grooves are 1/16, 1/16, 3/16.

High Compression Open Chamber

ROSS 13-1 compression ratio big block pistons listed in this section feature special hollow dome forgings for maximum strength with minimum weight. Will work with open chamber heads. Suitable for nitrous systems of 250 horsepower or less. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality and are retained by double spiro lox or can be press fitted into rods. Compression ratio is based on 118cc heads and .050 piston to head clearance (deck and gasket combined). Ring grooves are 1/16, 1/16, 3/16

The * in the note field indicates that oil ring support rails are included with that set of pistons.

Pistons Listing
Part #	Notes	Bore	Stroke	Rod Length	Dome CC	Comp	Dome Height	Grams	C.H.
ros83062		4.280	4.000	6.135	51	13.0	0.700	621	1.648
ros83032		4.280	4.000	6.385	51	13.0	0.700	595	1.398
ros99549	*	4.280	4.000	6.535	51	13.0	0.700	561	1.245
ros83462		4.280	4.250	6.135	51	13.7	0.700	593	1.523
ros83432	*	4.280	4.250	6.385	51	13.7	0.700	566	1.273
ros99546	*	4.280	4.250	6.535	51	13.7	0.700	529	1.120
ros80001		4.310	4.000	6.135	51	13.1	0.700	657	1.635
ros86062		4.310	4.000	6.135	51	13.1	0.700	653	1.648
ros86032		4.310	4.000	6.385	51	13.1	0.600	602	1.398
ros99550	*	4.310	4.000	6.535	51	13.1	0.700	529	1.245
ros86462		4.310	4.250	6.135	50	13.7	0.700	650	1.523
ros99510	*	4.310	4.250	6.385	50	13.7	0.640	565	1.273
ros86432	*	4.310	4.250	6.385	51	13.9	0.700	564	1.273
ros99547	*	4.310	4.250	6.535	51	13.9	0.700	574	1.120
ros99554		4.320	3.760	6.135	51	12.4	0.700	656	1.768
ros99551	*	4.320	4.000	6.535	51	13.2	0.700	536	1.245
ros99548	*	4.320	4.250	6.535	51	13.9	0.700	513	1.120
ros99555		4.350	3.760	6.135	51	12.6	0.700	674	1.768
ros87062		4.350	4.000	6.135	51	13.3	0.700	656	1.648
ros87432		4.350	4.000	6.385	51	13.3	0.700	593	1.398
ros99552	*	4.350	4.000	6.535	51	13.3	0.700	544	1.245
ros99509	*	4.350	4.250	6.385	51	14.1	0.700	602	1.273
ros99553	*	4.350	4.250	6.535	51	14.1	0.700	545	1.120
ros99611		4.375	4.000	6.135	51	13.4	0.700	630	1.648
ros88062		4.375	4.000	6.135	51	13.4	0.700	639	1.648
ros88032		4.375	4.000	6.385	51	13.4	0.700	621	1.398
ros99623		4.375	4.000	6.385	51	13.4	0.700	604	1.398
ros99622		4.375	4.250	6.135	49	13.9	0.600	622	1.523
ros88432	*	4.375	4.250	6.385	49	13.9	0.600	568	1.273
ros99624	*	4.375	4.250	6.385	49	13.9	0.600	564	1.273
ros85062		4.500	4.000	6.135	51	14.0	0.700	656	1.648
ros85032		4.500	4.000	6.385	51	14.0	0.700	627	1.398
ros85462		4.500	4.250	6.135	49	14.5	0.600	717	1.523
ros99512	*	4.500	4.250	6.385	45	13.9	0.500	558	1.273
ros85432	*	4.500	4.250	6.385	49	14.5	0.600	580	1.273
ros82014		4.530	4.000	6.135	51	14.2	0.700	670	1.648
ros82015		4.530	4.000	6.385	46.5	13.5	0.700	642	1.398
ros99513	*	4.530	4.250	6.385	45	14.0	0.500	560	1.273
ros88766		4.560	4.000	6.385	49	14.0	0.700	631	1.398
ros99776		4.560	4.000	6.535	45	13.4	0.500	594	1.245
ros99514	*	4.560	4.250	6.385	45.0	14.2	0.500	572	1.273
ros88765	*	4.560	4.250	6.385	49	14.8	0.600	696	1.273
ros99775	*	4.560	4.250	6.535	40.5	13.5	0.500	552	1.120
ros99778		4.600	4.000	6.535	45	13.6	0.500	607	1.245
ros99777		4.600	4.250	6.535	45	14.4	0.500	580	1.120
ros99779		4.625	4.000	6.535	45	13.7	0.500	618	1.245
ros99781		4.625	4.250	6.535	45	14.5	0.500	592	1.120

High Compression Closed Chamber

ROSS high compression ratio Big Block pistons in this section feature special hollow dome forgings for maximum strength with minimum weight. Will work with closed chamber heads. Designed for intake valves up to 2.300" diameter and exhaust valves up to 2.050" diameter. Suitable for nitrous systems of 250 horsepower or less. Pins included are .990 diameter, 2.930 length, .150 wall, 149 gram weight, aircraft quality, and are retained by double spirolox or can be press fitted into rods. Compression ratio is based on 106 cc heads and .050 piston to head clearance (deck and gasket combined). Ring grooves are 1/16, 1/16, 3/16.

Pistons Listing
Part #	Bore	Stroke	Rod Length	Dome CC	Comp	Dome Height	Grams	C.H.
ros83764	4.280	3.760	6.135	36	11.8	0.700	637	1.768
ros83064	4.280	4.000	6.135	36	12.5	0.700	607	1.648
ros82011	4.280	4.000	6.385	36	12.5	0.700	563	1.398
ros86764	4.310	3.760	6.135	36	12.0	0.700	644	1.768
ros86064	4.310	4.000	6.135	36	12.7	0.700	605	1.648
ros82012	4.310	4.000	6.385	36	12.7	0.700	559	1.398
ros99556	4.320	4.000	6.135	36	12.7	0.700	613	1.648
ros99557	4.350	4.000	6.135	36	12.9	0.700	618	1.648
ros88764	4.375	3.760	6.135	36	12.3	0.700	673	1.768
ros88064	4.375	4.000	6.135	36	13.0	0.700	646	1.648

Open and Closed Chamber for use with Blowers and Turbochargers

ROSS pistons listed in this section were designed for blown and turbocharged engines, and have thicker ring lands, more massive pin bosses and larger internal radii to withstand the additional cylinder pressure that forced induction engines put out. Ideal for street and marine applications, as well as drag racing. Big Block Chevrolet pins are .990 diameter, 2.930 length, .150 wall and weigh 149 grams. All pins supplied are aircraft quality are are retained by double spirolox, or can be press fitted into rods. In extremely high horsepower applications, ROSS tapered bore pins BBC part # 990-04-29, are recommended. Lower compression ratio is achieved by utilizing more deck clearance then normal (flat top "down in the hole").