Forged small block Chevy heavy duty flat top pistons from ROSS are the favorite choice of many high performance and racing engine builders. Ross forged piston sets incorporate unique design features to provide high strength and take advantage of precision machining and premium materials to build a high performance part you can depend on. Ross Racing products improve torque, horsepower, efficiency and reliability in high performance and racing engines.
We offer discount pricing, personalized service, technical assistance if you need help and fast shipping on the entire Ross Racing Pistons product line. Order today to enjoy all the performance benefits premium performance parts provide.
Chevrolet Small Block Heavy Duty Flat Top Pistons for 22 and 23 Degree Heads
 ROSS heavy duty
flat top small block Chevy pistons feature heavy duty design with moderate weight and can be used with
nitrous oxide systems below 250 horsepower.
Will work with 22 or 23
degree valve pocket angle (stock Chevrolet), standard location or .060/.040 split heads.
Pins included are 2.500 length, .150 wall, 120 gram weight, aircraft quality and are
retained by double spirolox or can be press fitted into rods.
- BLOCK HEIGHT 9.025
- COMPRESSION RATIO Based on .050 piston to head clearance (deck and gasket combined)
- FORCED INDUCTION Yes; up to 8.5 psi (.55 BAR) of boost
- NITROUS Yes up to 250hp shot
- WHAT’S INCLUDED 8 forged pistons, 8 Wrist Pins ( .927 5115 Series steel straight wall) and 32 pin retention locks
- PISTON RINGS Are sold separately Piston rings listed are plasma moly, file fit (unless noted as std fit by the part number) with standard tension oil rings
|
| Bore |
Stroke |
Rod
Length |
C.H. |
Dome
cc |
Compression Ratio with Head cc of: |
Weight |
Ring Grooves |
Piston Set Part Number |
Piston Ring Set |
| 58 |
64 |
76 |
| 4.02 |
3.48 |
5.7 |
1.568 |
-4 |
10.8 |
10 |
8.9 |
505 |
1/16; 1/16; 3/16 |
94455
|
RS-9771-25
$199.95 $198.95
 |
|
| 4.03 |
3.48 |
5.7 |
1.568 |
-4 |
10.8 |
10 |
8.9 |
514 |
1/16; 1/16; 3/16 |
90455
|
RS-9771-35
$199.95 $198.95
|
|
| 4.03 |
3.48 |
6 |
1.268 |
-4 |
10.8 |
10 |
8.9 |
469 |
1/16; 1/16; 3/16 |
90465
|
| 4.03 |
3.75 |
5.7 |
1.433 |
-4 |
11.5 |
10.7 |
9.5 |
490 |
1/16; 1/16; 3/16 |
90755
|
| 4.03 |
3.75 |
6 |
1.133 |
-4 |
11.5 |
10.7 |
9.5 |
486 |
1/16; 1/16; 1/8 |
90765
|
RS-9342-35
$199.95 $198.95
|
|
| 4.035 |
3.48 |
5.7 |
1.568 |
-4 |
10.8 |
10 |
8.9 |
517 |
1/16; 1/16; 3/16 |
92455
|
RS-9771-35 (std fit )
$199.95 $198.95
|
|
| 4.035 |
3.75 |
6 |
1.133 |
-4 |
11.6 |
10.8 |
9.5 |
453 |
1/16; 1/16; 1/8 |
94765
|
RS-9342-35 (std fit)
$199.95 $198.95
|
|
| 4.04 |
3.48 |
5.7 |
1.568 |
-4 |
10.8 |
10.1 |
8.9 |
526 |
1/16; 1/16; 3/16 |
91455
|
RS-9771-45
$199.95 $198.95
|
|
| 4.04 |
3.48 |
6 |
1.268 |
-4 |
10.8 |
10.1 |
8.9 |
474 |
1/16; 1/16; 3/16 |
91465
|
| 4.04 |
3.75 |
5.7 |
1.42 |
-6 |
11.6 |
10.8 |
9.5 |
472 |
1/16; 1/16; 1/8 |
99525
|
RS-9342-45
$199.95 $198.95
|
|
| 4.06 |
3.48 |
5.7 |
1.568 |
-4 |
10.9 |
10.2 |
9 |
511 |
1/16; 1/16; 3/16 |
93455
|
RS-9771-65
$199.95 $198.95
|
|
| 4.06 |
3.48 |
6 |
1.268 |
-4 |
10.9 |
10.2 |
9 |
485 |
1/16; 1/16; 3/16 |
93465
|
| 4.125 |
3.75 |
5.7 |
1.433 |
-4 |
12 |
11.1 |
9.9 |
496 |
1/16; 1/16; 3/16 |
97755
|
RS-10248-05
$199.95 $198.95
|
|
| 4.125 |
3.75 |
6 |
1.133 |
-4 |
12 |
11.1 |
9.9 |
450 |
1/16; 1/16; 1/8 |
97765
|
RS-10202-05
$219.95 $218.85
|
|
| 4.125 |
3.75 |
6 |
1.12 |
-6 |
11.7 |
11 |
9.6 |
439 |
1/16; 1/16; 3/16 |
99464 *& |
RS-10248-05
$199.95 $198.95
|
|
| 4.125 |
3.875 |
6 |
1.063 |
-6 |
12 |
11.2 |
9.9 |
422 |
1/16; 1/16; 3/16 |
99465 *& |
| 4.125 |
4 |
6 |
1.000 |
-6 |
12.4 |
11.6 |
10.2 |
412 |
1/16; 1/16; 3/16 |
99466 *& |
| 4.13 |
3.75 |
6 |
1.12 |
-6 |
11.7 |
10.9 |
9.7 |
441 |
1/16; 1/16; 3/16 |
99467 *& |
RS-10248-05 (std fit)
$199.95 $198.95
|
|
| 4.13 |
4 |
6 |
1 |
-6 |
12.4 |
11.6 |
10.2 |
406 |
1/16; 1/16; 3/16 |
99468 *& |
| 4.145 |
3.75 |
6 |
1.12 |
-6 |
11.8 |
11 |
9.7 |
448 |
1/16; 1/16; 3/16 |
99469 *& |
RS-10248-25
$199.95 $198.95
|
|
| 4.145 |
3.875 |
6 |
1.063 |
-6 |
12.1 |
11.3 |
10 |
432 |
1/16; 1/16; 3/16 |
99470 *& |
| 4.145 |
4 |
6 |
1 |
-6 |
12.5 |
11.6 |
10.3 |
420 |
1/16; 1/16; 3/16 |
99471 *& |
| 4.155 |
3.48 |
5.7 |
1.568 |
-4 |
11.3 |
10.5 |
9.3 |
530 |
1/16; 1/16; 3/16 |
95455
|
RS-10248-35
$199.95 $198.95
|
|
| 4.155 |
3.48 |
6 |
1.268 |
-4 |
11.3 |
10.5 |
9.3 |
492 |
1/16; 1/16; 3/16 |
95465
|
| 4.155 |
3.75 |
5.565 |
1.568 |
-4 |
12.1 |
11.3 |
10 |
530 |
1/16; 1/16; 3/16 |
95455
|
| 4.155 |
3.75 |
5.7 |
1.42 |
-4 |
12.1 |
11.3 |
10 |
455 |
1/16; 1/16; 3/16 |
90008
|
| 4.155 |
3.75 |
5.7 |
1.433 |
-4 |
12.1 |
11.3 |
10 |
516 |
1/16; 1/16; 3/16 |
95755
|
| 4.155 |
3.75 |
6 |
1.12 |
-4 |
12.1 |
11.3 |
10 |
411 |
1/16; 1/16; 1/8 |
90007
|
RS-10202-35
$219.95 $218.85
|
|
| 4.155 |
3.75 |
6 |
1.12 |
-6 |
12.1 |
11.3 |
10 |
444 |
1/16; 1/16; 3/16 |
99472 *
|
RS-10248-35
$199.95 $198.95
|
|
| 4.155 |
3.75 |
6 |
1.133 |
-4 |
12.1 |
11.3 |
10 |
471 |
1/16; 1/16; 1/8 |
95765
|
RS-10202-35
$219.95 $218.85
|
|
| 4.155 |
3.875 |
6 |
1.063 |
-6 |
12.1 |
11.4 |
10 |
437 |
1/16; 1/16; 3/16 |
99473 *
|
RS-10248-35
$199.95 $198.95
|
|
| 4.155 |
4 |
6 |
1 |
-6 |
12.5 |
11.7 |
10.3 |
422 |
1/16; 1/16; 3/16 |
99474 *& |
| 4.165 |
3.75 |
5.7 |
1.433 |
-4 |
12.1 |
11.3 |
10 |
518 |
1/16; 1/16; 3/16 |
96755
|
RS-10248-45
$199.95 $198.95
|
|
| 4.165 |
3.75 |
6 |
1.133 |
-4 |
12.1 |
11.3 |
10 |
468 |
1/16; 1/16; 1/8 |
96765
|
RS-10202-45
$219.95 $218.85
|
|
| 4.165 |
3.75 |
6 |
1.12 |
-6 |
12.1 |
11 |
9.8 |
450 |
1/16; 1/16; 3/16 |
99475 *& |
RS-10248-45
$199.95 $198.95
|
|
| 4.165 |
3.875 |
6 |
1.063 |
-6 |
12.2 |
11.4 |
10.1 |
434 |
1/16; 1/16; 3/16 |
99476 *& |
| 4.165 |
4 |
6 |
1 |
-6 |
12.6 |
11.7 |
10.4 |
421 |
1/16; 1/16; 3/16 |
99477 *& |
NOTES:
* after the piston part number indicates that oil ring support rails are included in the piston set.
& after the piston part number indicates will also work with 17 and 18 degree heads. |
Our complete listing of all available Ross Pistons products is here > Ross Racing Pistons Catalog |
ROSS pistons feature forced pin oilers when applicable, anti detonation grooves, lock removal grooves and come complete with wrist pin retention lock rings. The pistons are pin fit and balanced to plus or minus 2.5 grams throughout the set. Intake and, or exhaust valve pockets are radius machined and designed to handle most common performance camshaft applications. The precision skirt design allows the pistons to work properly under intense combustion heat and tremendous side loads without scuffing or splitting cylinder walls.
If you do not see the flat top SBC pistons here with the specifications that you require we offer pistons from many other manufacturers as well as custom forged pistons for just about any engine project. Please contact us if you need help locating the pistons you need, or if you would like to discuss a set of customs and we will be happy to work with you to make sure you get exactly the parts you need.
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