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LS1 Pistons Ross Racing Pistons LS1 Stroker Piston Kits

Ross LS1 LS2 LS6 LS7 Pistons Logo

 

ROSS Chevy LS1 Pistons are used in high performance, street car, muscle car, hot rod, street rod and Chevrolet LS series racing engines by knowledgeable engine builders the world over. They combine light weight, high strength, precision machining and premium materials to build a superior forged LS1 piston set you can depend on for high horsepower, torque, efficiency and reliability.

ROSS Chevy LS1 pistons include forced pin oilers and double spirolox on all of their stocking part number sets. Each part is selected and boxed to provide you a matched set that is balanced to within plus or minus 2.5 grams. The valve intake and exhaust pockets are designed to handle most common camshaft applications. The skirt design allows for operation under intense heat and tremendous side loads without scuffing or splitting the cylinder walls. Most normally aspirated pistons are designed to run with approximately .004 skirt to wall clearance.

 

LS1 Racing Pistons Camaro

Ross Forged Chevy LS1 Pistons

All of the sets listed below feature:

  • Forged from 2618-T61 Aluminum for ultimate strength and fatigue resistance
  • Wrist pins and pin fitting included
  • Accumulator groove included
  • Double pin oilers are force fed from the oil ring
  • Large valve relief depths and diameters allow for high lift cams and oversized valves
  • Piston sets are weight matched
  • Pin lock removal grooves included to ease lock ring removal
  • Fully CNC Machined
  • Double spiral locks or wire locks included
  • Piston ring set is included

Ross Chevrolet LS Series Stock Stroke and Stroker Pistons

 

  • ross ls1 piston ls2 ls6 ls7 piston imageStock LS1 LS6 bore size is 3.898 | LS2 is 4.000 | LS7 is 4.125
  • Stock LS2 LS2 LS6 crankshaft stroke is 3.622 | Stock LS7 Stroke is 4.000
  • Block Height 9.240"
  • Stock Rod Length is 6.098 for LS1 LS2 LS6 | Stock LS7 Rod Length is 6.077
  • Stock LS1 LS2 LS7 piston pin size is .945 | Stock LS7 pin size is .9252
  • Most of these pistons are for use with aftermarket rod lengths of 6.125 with a .927 pin
  • Ring grooves are 1.5mm, 1.5mm, 3mm
  • Compression based on .050 piston to head clearance (deck and gasket combined)
  • The 4.000" stroker crankshaft with a 3.905 bore = 383 cubic inches
  • The 4.000" stroker crankshaft with a 4.125 bore = 427 cubic inches
  • The 4.000" stroker crankshaft with a 4.155 bore = 434 cubic inches
  • FT = Flat Top
  • RD=Reverse Dome Top
  • CH = Compression Height This is the measurement from the centerline of the piston pin bore to the top flat part of the piston
  • Wt= Piston weight in grams
Bore Size Crank Stroke Rod Length Pin Size CH Wt.
in
grams
ccs type Compression with
64cc head
Part #
3.905 3.622 6.125 .927 1.299 435 -15.8 RD

9.0-1 can be used
with forced induction

ross 99840


Add To Cart
 

3.905 3.622

6.098

.945 1.326 422 -4.0 FT

10.0-1

ross 99838


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3.905 3.622 6.125 .927 1.299 402 -4.0 FT

10.7-1

ross 99839


Add To Cart

3.905 4.000 6.125 .927 1.110 375 -9.0 RD

10.7-1

ross 99837


Add To Cart

4.125 4.000 6.125 .927 1.110 461 -2.6 FT  

ross 99171


Add To Cart

4.125 4.000 6.125 .927 1.110 445 -35 RD 8.8-1 can be used
with forced induction

ross 99173


Add To Cart

4.155 4.000 6.125 .927 1.110 467 -2.6 FT  

ross 99172


Add To Cart

4.155 4.000 6.125 .927 1.110 429 -36.5 RD 8.8-1 can be used
with forced induction

ross 99174


Add To Cart

If you do not find what you want listed here, we also sell CP Pistons brand forged LS1 LS2 LS7 Dish Top Pistons and LS Series Flat Top Pistons

Please feel free to use our compression ratio calculator

 

If you do not see the exact piston specs you want in the above list we offer parts from many other top quality manufacturers. If  no shelf stocking type sets are available we will be happy to help you with a custom LS1 piston. Custom sets can be made to your exact requirements. Please e-mail us and we will be happy to assist you with a custom order. We offer discounted pricing, even on custom pistons so please contact us and we will be happy to help.

 

Links to related performance parts sections of our website:

 

 

 

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