Vortec L31 cylinder head
m (→Using an early style intake on an aftermarket Vortec-type head: minor clean up) |
m (Minor clean up) |
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[[File:Vortec dome piston long rod.jpg|350px|left|thumb|KB domed piston for the Vortec head. This example uses a long rod]] <br style="clear:both"/> | [[File:Vortec dome piston long rod.jpg|350px|left|thumb|KB domed piston for the Vortec head. This example uses a long rod]] <br style="clear:both"/> | ||
| − | While using a domed piston in a SBC engine is generally avoided, there may be certain circumstances that require their use. One such example is the large port Bow Tie Vortec head; it can only be milled to about 51 cc. This will give about 12:1 CR using flat top pistons. So if a higher CR is required, domed pistons must be used unless the chambers are welded and machined smaller | + | While using a domed piston in a SBC engine is generally avoided, there may be certain circumstances that require their use. One such example is the large port Bow Tie Vortec head; it can only be milled to about 51 cc. This will give about 12:1 CR using flat top pistons. So if a higher CR is required (drag race/alcohol fuel, etc.), domed pistons must be used unless the chambers are welded and machined smaller. |
| − | + | For reference, an engine using ''unported'' large port Bow Tie heads built to Florida Association of Stock Car Racing, or ''FASCAR'' specifications, made over [http://www.chevyhiperformance.com/techarticles/148_0506_gm_bow_tie_vortec_small_block_engine/viewall.html 630 HP/500 ft/lb torque] with 12:1 CR. | |
==Recommended spark plugs== | ==Recommended spark plugs== | ||
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