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Comp Ratio base on: .050 piston to head clearance
(incl. deck & gasket)
Block Height: 9.025
Forced Induct: No
Nitrous: Yes
Up to 250HP
Pins: .927 dia. x 2.950 lgth
x .152 wall
Ring Grooves: 1/16, 1/16, 3/16
Tech Tip: Designed for DART, Brodix, or Chevy
Bow-Tie 17 or 18 degree heads

Ross Pistons
Chevy Small Block
Flat Top Pistons 17° or 18° Heads
 Included: Pistons, Pins, Spiro Lox (rings NOT included)
  • ROSS flat top pistons manufactured on XL forgings feature heavy duty design with light weight, and can be used with nitrous oxide systems of up to 250 horsepower.
  • Designed for Dart, Brodix or Chevrolet "Bow Tie" 17 or 18 degree heads.
  • Will work with 22 or 23 degree heads; however, valve pockets will be extra deep which will work with very high lift cams at a slight sacrifice in compression.
  • .927 x 2.950 standard pins are included.
  • All pistons listed on this page have 1/16, 1/16, 3/16 ring grooves.
  • Valve pockets displace 6 cc.
  • NOT RECOMMENDED FOR USE WITH FORCED INDUCTION SYSTEMS.
Bore Stroke Rod Length Comp Ratio
w/Head CC of:		C.H.  Weight Part # Price
48 52 64
4.040  3.750  5.700  12.9 12.2 10.1 1.420  471  99525 $545
4.125  3.750  6.000  13.3 12.6 10.9 1.120  439  99464 $589*
4.125  3.875  6.000  13.7 13.0 11.3 1.063  422  99465 $589*
4.125  4.000  6.000  14.1 13.4 11.6 1.000  412  99466 $589*
4.130  3.750  6.000  13.3 12.6 10.9 1.120  441  99467 $589*
4.130  3.875  6.000  13.7 13.0 11.3 1.063  420  99508 $589*
4.130  4.000  6.000  14.1 13.4 11.6 1.000  406  99468 $589*
4.145  3.750  6.000  13.4 12.7 11.0 1.120  448  99469 $589*
4.145  3.875  6.000  13.8 13.1 11.3 1.063  432  99470 $589*
4.145  4.000  6.000  14.2 13.5 11.7 1.000  420  99471 $589*
4.155  3.750  6.000  13.4 12.7 11.0 1.120  444  99472 $589*
4.155  3.875  6.000  13.8 13.0 11.4 1.063  436  99473 $589*
4.155  4.000  6.000  14.3 13.5 11.7 1.000  419  99474 $589*
4.165  3.750  6.000  13.5 12.8 11.0 1.120  450  99475 $589*
4.165  3.875  6.000  13.9 13.1 11.4 1.063  434  99476 $589*
4.165  4.000  6.000  14.3 13.6 11.8 1.000  428  99477 $589*
Notes: (when applicable)
  1. * Price includes Oil Ring Support Rails
 
 
 
 
 
 
 
 
 
Sales/Tech Line: (603) 378-0090
Email: tech@flatlanderracing.com

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*All prices on this site are subject to change without notice. Flatlander Racing™ disclaims responsibility for any printing or typographical errors, and does not guarantee that all information is accurate.

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