Ross Racing Pistons Big Block Chevy Pistons
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
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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.
NOT RECOMMENDED FOR USE WITH FORCED INDUCTION SYSTEMS.
409 Piston Listing |
Part # |
Bore |
Stroke |
Rod Length |
Dome CC |
Dome Height |
Grams |
C.H. |
ros83561 |
4.342 |
3.500 |
6.010 |
10.5 |
450 |
817 |
1.823 |
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.
NOT FOR USE WITH FORCED
INDUCTION SYSTEMS.
Pistons Listing |
Part # |
Bore |
Stroke |
Rod Length |
Dome CC |
Comp |
Grams |
C.H. |
ros83066 |
4.280 |
4.000 |
6.135 |
-3 |
8.5 |
603 |
1.648 |
ros86066 |
4.310 |
4.000 |
6.135 |
-3 |
8.6 |
611 |
1.648 |
ros85066 |
4.500 |
4.000 |
6.135 |
-3 |
9.2 |
643 |
1.648 |
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.
NOT RECOMMENDED FOR USE
WITH FORCED INDUCTION SYSTEMS.
Pistons Listing |
Part # |
Bore |
Stroke |
Rod Length |
Dome CC |
Grams |
C.H. |
ros83069 |
4.280 |
4.000 |
6.135 |
22 |
688 |
1.648 |
ros88767 |
4.310 |
4.000 |
6.135 |
22 |
699 |
1.648 |
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.
NOT RECOMMENDED FOR USE
WITH FORCED INDUCTION SYSTEMS.
Pistons Listing |
Part # |
Bore |
Stroke |
Rod
Length |
Dome
CC |
Comp |
Dome
Height |
Grams |
C.H. |
| ros83762 |
4.280 |
3.760 |
6.135 |
51.0 |
11.7 |
.700 |
648 |
1.768 |
| ros83064 |
4.280 |
4.000 |
6.135 |
36.0 |
10.7 |
.700 |
615 |
1.648 |
| ros83063 |
<4.280 |
4.000 |
6.135 |
41 |
11.2 |
.500 |
607 |
1.648 |
| ros86762 |
4.310 |
3.760 |
6.135 |
51.0 |
11.9 |
.700 |
661 |
1.768 |
| ros86064 |
4.310 |
4.000 |
6.135 |
36.0 |
10.8 |
.700 |
625 |
1.648 |
| ros86063 |
4.310 |
4.000 |
6.135 |
41 |
11.4 |
<.500 |
603 |
1.648 |
| ros99556 |
4.320 |
4.000 |
6.135 |
36.0 |
10.8 |
.700 |
628 |
1.648 |
| ros99557 |
4.350 |
4.000 |
6.135 |
36.0 |
11.0 |
.700 |
630 |
1.648 |
| ros88764 |
4.375 |
3.760 |
6.135 |
36.0 |
10.5 |
.700 |
685 |
1.768 |
| ros88064 |
4.375 |
4.000 |
6.135 |
36.0 |
11.1 |
.700 |
661 |
1.648 |
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
NOT FOR USE WITH FORCED
INDUCTION SYSTEMS.
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.
NOT RECOMMENDED FOR USE
WITH FORCED INDUCTION SYSTEMS.
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").
* in the note field means that this piston set includes
oil ring support rails.
Pistons Listing |
Part # |
Note |
Bore |
Stroke |
Rod
Length |
C.R. |
Grams |
C.H. |
Pin Dia. |
Rings |
ros83068 |
|
4.280 |
4.000 |
6.135 |
8 |
620 |
1.614 |
0.990 |
"5/64,5/64,3/16" |
ros82016 |
* |
4.280 |
4.000 |
6.385 |
8 |
565 |
1.365 |
0.990 |
"5/64,5/64,3/16" |
ros86068 |
|
4.310 |
4.000 |
6.135 |
8 |
638 |
1.609 |
0.990 |
"5/64,5/64,3/16" |
ros82017 |
* |
4.310 |
4.000 |
6.385 |
8 |
580 |
1.365 |
0.990 |
"5/64,5/64,3/16" |
ros85065 |
|
4.500 |
4.000 |
6.135 |
8.5 |
685 |
1.648 |
0.990 |
"5/64,5/64,3/16" |
ros85365 |
|
4.500 |
4.000 |
6.385 |
8.5 |
655 |
1.398 |
0.990 |
"1/16,1/16,3/16" |