Page 648 - 2021-22_EngineCatalogAP

COMPRESSION HEIGHT GUIDE
The following chart is designed to determine the required compression height when choosing cubic inch displacement, cyl- inder bore, stroke, and rod length. Often, identical displacement engines may be assembled in several variations, depend- ing on the chosen rod length and compression height. For example, a Small Block Chevy 383 CID engine may be assem- bled in three different rod length/compression height variations using a 5.565" rod/1.561" comp. ht., 5.700" rod/1.433" comp. ht., or a 6.000" rod/1.130" comp. ht. Many more engine variations may be created other than what is listed, howev- er, those listed are readily available using “off-the-shelf” pistons, connecting rods, and crankshafts.
Cubic Rod Inch Length
Chevy Small Block
283 5.700" 305 5.700" 305 6.000" 327 5.700" 327 6.000" 334 5.565" 334 5.700" 350 5.700" 350 6.000" 350 6.200" 353 6.000" 366 5.700" 377 5.700" 383 5.565" 383 5.700" 383 6.000" 400 5.565" 400 5.700" 400 6.000"
Chevy Big Block
396 6.135" 402 6.135" 427 6.135" 434 6.135" 454 6.135" 489 6.135" 489 6.385" 489 6.535" 502 6.135" 540 6.385"
Chrysler Small Block
318 6.123" 340 6.123" 360 6.123" 408 6.123"
Chrysler Big Block
383 6.358" 400 6.358" 426 6.860" 440 6.768" 450 6.358" 450 6.768" 498 6.768" 501 6.768"
Ford Small Block
289 5.155" 302 5.090" 302 5.400" 331 5.400" 347 5.400"
351W 5.956" 351W 6.580" 351W 5.956" 372W 6.200" 393W 5.956" 408W 6.000" 408W 6.125" 408W 6.200" 408W 6.250" 416W 6.123" 416W 6.200"
Ford Big Block
429 6.605"
460 6.605" 520 (SVO 514) 6.200"
Deck Bore Stroke Height
Compression Height
3.875" 3.000" 9.025" 1.805"
3.736" 3.480" 9.025" 3.736" 3.480" 9.025" 4.000" 3.250" 9.025" 4.000" 3.250" 9.025" 3.736" 3.750" 9.025" 3.736" 3.750" 9.025" 4.000" 3.480" 9.025" 4.000" 3.480" 9.025" 4.000" 3.480" 9.025" 4.125" 3.250" 9.025" 4.000" 3.600" 9.025" 4.125" 3.480" 9.025" 4.000" 3.750" 9.025" 4.000" 3.750" 9.025" 4.000" 3.750" 9.025" 4.125" 3.750" 9.025" 4.125" 3.750" 9.025" 4.125" 3.750" 9.025"
1.561" 1.261" 1.678" 1.385" 1.561" 1.433" 1.561" 1.265" 1.061" 1.380" 1.490" 1.261" 1.561" 1.433" 1.130" 1.561" 1.433" 1.130"
COMPRESSION HEIGHT GUIDE
4.094" 3.760" 9.800" 1.765"
4.125" 3.760" 9.800" 4.250" 3.760" 9.800" 4.125" 4.000" 9.800" 4.250" 4.000" 9.800" 4.250" 4.250" 9.800" 4.250" 4.250" 9.800" 4.250" 4.250" 10.200" 4.466" 4.000" 9.800" 4.466" 4.250" 9.800"
1.765" 1.765" 1.645" 1.645" 1.520" 1.270" 1.520" 1.645" 1.270"
3.910" 3.310" 9.578" 1.810"
4.040" 3.310" 9.599" 4.000" 3.580" 9.599" 4.000" 4.000" 9.599"
1.840" 1.675" 1.465"
4.250" 3.380" 9.980" 1.908"
4.342" 3.380" 9.980" 4.250" 3.750" 10.725" 4.320" 3.750" 10.725" 4.342" 3.750" 9.980" 4.342" 3.750" 9.980" 4.342" 4.150" 10.725" 4.342" 4.250" 10.725"
1.908" 1.949" 2.067" 1.722" 1.327" 1.722" 1.722"
4.000" 2.870" 8.206" 1.608"
4.000" 3.000" 8.206" 4.000" 3.000" 8.206" 4.000" 3.250" 8.206" 4.000" 3.400" 8.206" 4.000" 3.400" 9.500" 4.000" 3.500" 9.500" 4.000" 3.500" 9.500" 4.000" 3.640" 9.500" 4.000" 3.850" 9.500" 4.000" 4.000" 9.500" 4.000" 4.000" 9.500" 4.000" 4.000" 9.500" 4.000" 4.000" 9.500" 4.000" 4.075" 9.480" 4.000" 4.075" 9.500"
1.608" 1.298" 1.170" 1.090" 1.774" 1.160" 1.774" 1.440" 1.608" 1.490" 1.365" 1.280" 1.240" 1.310" 1.251"
4.360" 3.590" 10.320" 1.900"
521 521 545
6.700" 4.360" 6.800" 4.360" 6.700" 4.360"
4.300" 10.320" 4.300" 10.320" 4.500" 10.320"
4.360" 3.850" 10.320" 4.390" 4.300" 10.320"
1.772" 1.545" 1.450" 1.350" 1.350"
646 2021-22 ENGINE BUILDER CATALOG