Editing Chevy 409 engine
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The W's were big bore, short stroke engines (409 had a 4.3125" bore x 3.5" stroke, but only a 6" rod). They had their flaws, though. Among them were the heavy pistons, high rpm caused bearing and rod failures. The 348 could be considered a long rod engine- 4.125" bore x 3.25" stroke w/a 6.135" rod. Same whacked deck angle as the '09, though. Why they used the ~75 degree block deck and a flat head w/o a chamber is beyond me. Might have been because the heads were easier to make (basically no chamber), but the valve layout required two different pistons per side, so that makes the ease of head manufacturing about a wash, IMHO. <div align="center"> <br> </div> <div align="center"> <table style="border-collapse: collapse" border="0" width="750"> <tr> <td> <table style="border-collapse: collapse; border-color: #000000" border="1" width="750"> <tr> <td colspan="4" align="center" height="50"> <font color="#660000" size="5"> <strong></strong> <span class="style1"><span class="style14">348/409 CHEVROLET ENGINE BLOCK CASTING NUMBERS</span></span></font></td> </tr> <tr> <td colspan="4" align="center" height="35"><hr></td> </tr> <tr> <td class="style2" align="center" height="35" width="206"> CASTING #</td> <td class="style2" align="center" height="35" width="193"> YEAR</td> <td class="style2" align="center" height="35" width="106"> CID</td> <td class="style2" align="center" height="35" width="237"> NOTES</td> </tr> <tr> <td class="style2" align="center" width="206">3732755</td> <td class="style1" align="center" width="193">59-61</td> <td class="style1" align="center" width="106">348</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3732811</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 58</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 348</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3751872</td> <td class="style1" align="center" width="193">58</td> <td class="style1" align="center" width="106">348</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3755011</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 59-61</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 348</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3771705</td> <td class="style1" align="center" width="193">59-61</td> <td class="style1" align="center" width="106">348</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3782012</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 58-61</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 348</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3788068</td> <td class="style1" align="center" width="193">62-63</td> <td class="style1" align="center" width="106">409</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3795623</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 61</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 409</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3798962</td> <td class="style1" align="center" width="193">62-65</td> <td class="style1" align="center" width="106">348</td> <td class="style1" align="center" width="237">Truck Block</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3815707</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 58-61</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 348</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3830814</td> <td class="style1" align="center" width="193">63</td> <td class="style1" align="center" width="106">427</td> <td class="style1" align="center" width="237">AKA Z11</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3830814</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 63-64</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 409</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3839752</td> <td class="style1" align="center" width="193">62-63</td> <td class="style1" align="center" width="106">409</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3839754</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 65</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 409</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3844422</td> <td class="style1" align="center" width="193">65-65</td> <td class="style1" align="center" width="106">409</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3857655</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 62-65</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 348</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> Truck Block</td> </tr> <tr> <td class="style2" align="center" width="206">3857656</td> <td class="style1" align="center" width="193">64-65</td> <td class="style1" align="center" width="106">409</td> <td class="style1" align="center" width="237"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0" width="206"> 3860386</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="193"> 62-64</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="106"> 409</td> <td class="style1" align="center" bgcolor="#C0C0C0" width="237"> </td> </tr> <tr> <td class="style2" align="center" width="206">3860387</td> <td class="style1" align="center" width="193">58</td> <td class="style1" align="center" width="106">348</td> <td class="style1" align="center" width="237"> </td> </tr> </table> </td> </tr> </table> <p class="style1"> </p> </div> <div align="center"> <div align="center"> <table style="border-color:#000000; border-collapse: collapse" border="1" width="750"> <tr> <td colspan="5" height="50"> <p align="center"> <font class="style13" color="#660000" size="5"> <span class="style1">348/409 CHEVROLET CYLINDER HEAD CASTING NUMBERS</span></font></p> </td> </tr> <tr> <td colspan="5" height="35"><hr></td> </tr> <tr> <td class="style2" align="center" height="35">CASTING #</td> <td class="style2" align="center" height="35">YEAR</td> <td class="style2" align="center" height="35">CID</td> <td class="style2" align="center" height="35">VALVE SIZE</td> <td class="style2" align="center" height="35">NOTES</td> </tr> <tr> <td class="style2" align="center">3732791</td> <td class="style1" align="center">58-60</td> <td class="style1" align="center">348</td> <td class="style1" align="center"> </td> <td class="style1" align="center"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3758379</td> <td class="style1" align="center" bgcolor="#C0C0C0">59-61</td> <td class="style1" align="center" bgcolor="#C0C0C0">348</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> <td class="style1" align="center" bgcolor="#C0C0C0">250 HP</td> </tr> <tr> <td class="style2" align="center">3759256</td> <td class="style1" align="center">58</td> <td class="style1" align="center">348</td> <td class="style1" align="center"> </td> <td class="style1" align="center"> </td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3759332</td> <td class="style1" align="center" bgcolor="#C0C0C0">58-60</td> <td class="style1" align="center" bgcolor="#C0C0C0">348</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> </tr> <tr> <td class="style2" align="center">3764702</td> <td class="style1" align="center">60</td> <td class="style1" align="center">348</td> <td class="style1" align="center"> </td> <td class="style1" align="center">Truck</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3767738</td> <td class="style1" align="center" bgcolor="#C0C0C0">59-60</td> <td class="style1" align="center" bgcolor="#C0C0C0">348</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> <td class="style1" align="center" bgcolor="#C0C0C0">250 HP</td> </tr> <tr> <td class="style2" align="center">3781147</td> <td class="style1" align="center">60-61</td> <td class="style1" align="center">348</td> <td class="style1" align="center">2.06/1.72</td> <td class="style1" align="center">High Performance Head</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3781173</td> <td class="style1" align="center" bgcolor="#C0C0C0">60</td> <td class="style1" align="center" bgcolor="#C0C0C0">348</td> <td class="style1" align="center" bgcolor="#C0C0C0">1.94/1.66</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> </tr> <tr> <td class="style2" align="center">3795586</td> <td class="style1" align="center">61</td> <td class="style1" align="center">348/409</td> <td class="style1" align="center">2.06/1.72</td> <td class="style1" align="center">High Performance Head</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3814690</td> <td class="style1" align="center" bgcolor="#C0C0C0">62-63</td> <td class="style1" align="center" bgcolor="#C0C0C0">409</td> <td class="style1" align="center" bgcolor="#C0C0C0">2.19/1.72</td> <td class="style1" align="center" bgcolor="#C0C0C0">High Performance Head</td> </tr> <tr> <td class="style2" align="center">3815643</td> <td class="style1" align="center">58-62</td> <td class="style1" align="center">348/409</td> <td class="style1" align="center"> </td> <td class="style1" align="center">Truck</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3815857</td> <td class="style1" align="center" bgcolor="#C0C0C0">58-62</td> <td class="style1" align="center" bgcolor="#C0C0C0">348/409</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> <td class="style1" align="center" bgcolor="#C0C0C0">Truck</td> </tr> <tr> <td class="style2" align="center">3819333</td> <td class="style1" align="center">62-65</td> <td class="style1" align="center">348/409</td> <td class="style1" align="center"> </td> <td class="style1" align="center">HD Truck</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3830817</td> <td class="style1" align="center" bgcolor="#C0C0C0">63-65</td> <td class="style1" align="center" bgcolor="#C0C0C0">409</td> <td class="style1" align="center" bgcolor="#C0C0C0"> </td> <td class="style1" align="center" bgcolor="#C0C0C0">340 HP</td> </tr> <tr> <td class="style2" align="center">3837731</td> <td class="style1" align="center">63</td> <td class="style1" align="center">427</td> <td class="style1" align="center"> </td> <td class="style1" align="center">AKA Z11</td> </tr> <tr> <td class="style2" align="center" bgcolor="#C0C0C0">3852583</td> <td class="style1" align="center" bgcolor="#C0C0C0">63-65</td> <td class="style1" align="center" bgcolor="#C0C0C0">409</td> <td class="style1" align="center" bgcolor="#C0C0C0">2.19/1.72</td> <td class="style1" align="center" bgcolor="#C0C0C0">High Performance Head</td> </tr> </table>
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