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Ross Big Block Chevy High Compression Open Chamber Pistons

Ross Big Block Chevy Open Chamber Pistons

Forged high compression BBC dome top open chamber pistons from ROSS Racing Pistons are the favorite choice of many high performance and racing engine builders. The Ross BBC pistons listed on this page are made specifically for use with open chamber heads. Ross forged pistons incorporate unique design features to provide high strength and take advantage of precision machining and premium materials to build a forged piston you can depend on. Ross big block Chevy high compression open chamber pistons give improved torque, horsepower, efficiency and reliability. We offer discounted pricing, tech help if you need assistance, and fast shipping on the entire Ross Racing Pistons product line..

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.

Ross Racing Pistons Open Chamber BBC Dome Pistons

 

High Compression Big Block Chevy Pistons for use with Open Chamber Heads

High Compression BBC Dome Open Chamber Ross PistonROSS high compression BBC pistons listed in this section feature special hollow dome forgings for maximum strength with minimum weight. Designed for use with open chamber heads. These pistons are 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 5115 series straight wall .990 diameter, aircraft quality and are retained by double spiro lox or can be press fitted into rods. Compression ratio for these pistons is based on the cylinder head chamber volumes as listed in the chart below and .050 piston to head clearance (deck and gasket combined). Ring grooves are 1/16, 1/16, 3/16

  • BLOCK HEIGHT 9.800
  • COMPRESSION RATIO Based on .050 piston to head clearance (deck and gasket combined)
  • FORCED INDUCTION No
  • NITROUS Yes up to 250hp shot
  • Ring Grooves 1/16 1/16 3/16
  • APPLICATIONS Street, Drag Racing, Marine (optional taper bore pins recommended for high horsepower applications)
  • WHAT’S INCLUDED 8 forged pistons, 8 Wrist Pins ( .990 5115 Series steel straight wall) and 32 pin retention locks
  • PISTON RINGS Are sold separately Piston rings listed are plasma moly, file fit with standard tension oil rings

 

Bore Stroke Rod
Length
C.H. Dome
cc
Dome Ht

Compression Ratio with Head cc of:

Weight Piston Ring Set Piston Set
109 118 124
4.280 4.000 6.135 1.648 51 0.7 14.5 13 12.1 631 RS-9745-35
$147.08 $132.37

Add To Cart
83062

Add To Cart
4.280 4.000 6.385 1.398 51 0.7 14.5 13 12.1 595 83032

Add To Cart
4.280 4.000 6.535 1.245 51 0.7 14.5 13 12.1 561 99549 *

Add To Cart
4.280 4.250 6.135 1.523 51 0.7 15.4 13.7 12.8 593 83462

Add To Cart
4.280 4.250 6.385 1.273 51 0.7 15.4 13.7 12.8 566 83432 *

Add To Cart
4.280 4.250 6.535 1.12 51 0.7 15.4 13.7 12.8 529 99546 *

Add To Cart
4.310 4.000 6.135 1.635 51 0.7 14.7 13.1 12.3 647 RS-9745-65
$147.08 $132.37

Add To Cart
80001

Add To Cart
4.310 4.000 6.135 1.648 51 0.7 14.7 13.1 12.3 653 86062

Add To Cart
4.310 4.000 6.385 1.398 51 0.7 14.7 13.1 12.3 602 86032

Add To Cart
4.310 4.000 6.535 1.245 51 0.7 14.7 13.1 12.3 559 99550 *

Add To Cart
4.310 4.250 6.135 1.523 50 0.64 15.3 13.7 12.8 611 86462

Add To Cart
4.310 4.250 6.385 1.273 50 0.64 15.3 13.7 12.8 565 99510 *

Add To Cart
4.310 4.250 6.535 1.12 51 0.7 15.5 13.9 13 531 99547 *

Add To Cart
4.320 3.760 6.135 1.768 51 0.7 13.9 12.4 11.6 664 RS-9798-05
$166.55 $149.90

Add To Cart
99554

Add To Cart
4.320 4.000 6.535 1.245 51 0.7 14.7 13.2 12.3 561 99551 *

Add To Cart
4.350 3.760 6.135 1.768 51 0.7 14 12.6 11.8 574 RS-9798-35
$166.55 $149.90

Add To Cart
99555

Add To Cart
4.350 4.000 6.135 1.648 51 0.7 14.9 13.3 12.4 665 87062

Add To Cart
4.350 4.000 6.385 1.398 51 0.7 14.9 13.3 12.4 611 87432

Add To Cart
4.350 4.000 6.535 1.245 51 0.7 14.9 13.3 12.4 571 99552 *

Add To Cart
4.350 4.250 6.385 1.273 51 0.7 15.7 14.1 13.2 595 99509 *

Add To Cart
4.350 4.250 6.535 1.12 51 0.7 15.7 14.1 13.2 545 99553 *

Add To Cart
4.375 4.000 6.135 1.648 51 0.7 15 13.4 12.6 641 RS-9799-05
$166.55 $149.90

Add To Cart
99611

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4.375 4.000 6.135 1.648 51 0.7 15 13.4 12.6 639 88062 Discontinued
4.375 4.000 6.385 1.398 51 0.7 15 13.4 12.6 604 99623

Add To Cart
4.375 4.250 6.135 1.523 49 0.6 15.5 13.9 13 621 99622

Add To Cart
4.375 4.250 6.385 1.273 49 0.6 15.5 13.9 13 580 99624 *

Add To Cart
4.500 4.000 6.135 1.648 51 0.7 15.7 14 13.1 643 RS-10451-05
$194.55 $175.10

Add To Cart
85062

Add To Cart
4.500 4.000 6.385 1.398 51 0.7 15.7 14 13.1 628 85032

Add To Cart
4.500 4.250 6.135 1.523 49 0.6 16.2 14.5 13.6 628 85462

Add To Cart
4.500 4.250 6.385 1.273 45 0.5 15.4 13.9 13 577 99512

Add To Cart
4.500 4.250 6.385 1.273 49 0.6 16.2 14.5 13.6 589 85432 *

Add To Cart
4.530 4.000 6.135 1.648 51 0.7 15.8 14.2 13.3 670 RS-10451-35
$194.55 $175.10

Add To Cart
82014

Add To Cart
4.530 4.000 6.385 1.398 46.5 0.7 15 13.5 12.6 642 82015

Add To Cart
4.530 4.250 6.385 1.273 45 0.5 15.5 14 13.2 565 99513

Add To Cart
4.560 4.000 6.385 1.398 49 0.7 15.6 14 13.1 631 RS-10441-05
$194.55 $175.10

Add To Cart
88766

Add To Cart
4.560 4.000 6.535 1.245 45 0.5 14.8 13.4 12.6 594 99776 *

Add To Cart
4.560 4.250 6.385 1.273 45 0.5 15.7 14.2 13.3 572 99514

Add To Cart
4.560 4.250 6.385 1.273 49 0.6 16.5 14.8 13.9 592 88765 *

Add To Cart
4.560 4.250 6.535 1.12 45 0.5 14.9 13.5 12.7 552 99775 *

Add To Cart
4.600 4.000 6.535 1.245 45 0.5 15 13.6 12.8 607   99778 *

Add To Cart
4.600 4.250 6.535 1.12 45 0.5 15.9 14.4 13.5 594 99777 *

Add To Cart
4.625 4.000 6.535 1.245 45 0.5 15.2 13.7 12.9 618   99779 *

Add To Cart
4.625 4.250 6.535 1.12 45 0.5 16 14.5 13.6 592 99781*

Add To Cart
* after the piston part number indicates that oil ring support rails are included in the piston set.

 

Custom BBC Open Chamber Pistons

If you do not see a set of pistons here that meet your needs, we also offer custom forged pistons for most any engine project. Please contact us if you would like to discuss a set of custom pistons and we will be happy to work with you to make sure you get exactly the pistons you need for your engine.

 

 

Ross Forged Racing Pistons Catalog Index

 

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