Home >> Pistons >> Ross >> Auto. Stocking >> SB Chevy Menu >> SBC Dome Top 17 or 18 degrees

Comp Ratio base on: .050 piston to head clearance (w/deck & gasket) Block Height: 9.025 Forced Induction: Yes - up to 250HP Nitrous: No Pins: .927 dia. x 2.950 length x .150 wall Ring Grooves: 1/16, 1/16, 3/16 Tech Tip: Can be re-machined to lower dome or flat top. Chevy Small Block Dome Top Pistons 17° or 18° Heads Included: Pistons, Pins, Spiro Lox (rings NOT included) ROSS dome top pistons are machined on our new XL series forging for minimum weight and maximum strength. Domes feature net effective dome cc as listed. Pistons can be re-machined to lower dome or flat top, if desired by customer. Pins are .927 dia., 2.950 length, .150 wall, 141 gram weight, aircraft quality, and are retained by double spiro lox or can be press fitted in rods. Ring grooves are 1/16, 1/16, 3/16. Compression ratio based on .050 piston to head clearance (deck and gasket combined). NOT RECOMMENDED FOR USE WITH FORCED INDUCTION SYSTEMS OR NITROUS ABOVE 250 HP.

Bore Stroke Rod Lgth Dome CC Comp Ratio w/Head CC of: C.H. Gram WT Part # Price Notes 48 52 64 4.003  3.480  6.000  6.000  15.3 14.2 11.8 1.255  439  99478 $629 1,2 4.020  3.480  6.000  6.000  15.4 14.3 11.9 1.255  444  99479 $629 1,2 4.030  3.480  6.000  6.000  15.4 14.4 11.9 1.255  451  99480 $629 1,2 4.035  3.480  6.000  6.000  15.4 14.4 12.0 1.255  454  99481 $629 1,2 4.040  3.480  6.000  6.000  15.5 14.4 12.0 1.255  457  99482 $629 1,2 4.125  3.750  6.000  6.000  16.2 15.2 12.7 1.120  458  99483 $629 1  4.125  3.800  6.000  6.000  16.4 15.4 12.9 1.095  462  99484 $629 1  4.130  3.750  6.000  6.000  16.3 15.2 12.8 1.120  469  99485 $629 1  4.130  3.800  6.000  6.000  16.5 15.4 12.9 1.095  462  99486 $629 1  4.145  3.750  6.000  6.000  16.3 15.3 12.8 1.120  476  99487 $629 1 4.145  3.800  6.000  6.000  16.5 15.5 13.0 1.095  471  99488 $629 1 4.155  3.300  6.000  6.000  14.6 13.6 11.5 1.345  526  99489 $589 1 4.155  3.750  6.000  6.000  16.4 15.3 12.9 1.120  481  99490 $629 1 4.155  3.800  6.000  6.000  16.6 15.5 13.0 1.095  473  99491 $629 1 4.165  3.750  6.000  6.000  16.5 15.4 12.9 1.120  485  99492 $629 1 4.165  3.800  6.000  6.000  16.7 15.6 13.1 1.095  478  99493 $629 1 Notes: Price includes Oil Ring Support Rails Will also work with 3.500 stroke

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