Vortec L31 cylinder head
From Crankshaft Coalition Wiki
(→Optional GMPP Vortec parts) |
(→Upgrading and compatibility) |
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There are some inherent costs associated in swapping from 1995-back heads to the L31 Vortec heads. Here is a list of items to be purchased and/or labor associated with the upgrade: | There are some inherent costs associated in swapping from 1995-back heads to the L31 Vortec heads. Here is a list of items to be purchased and/or labor associated with the upgrade: | ||
* L31 heads | * L31 heads | ||
| − | * Springs if the cam has a valve lift over about 0. | + | * Springs if the cam has a valve lift over about 0.440" |
* 1987 to present center bolt style valve covers if the heads used previously were perimeter style (1986 and earlier including the current production Goodwrench 350 crate motor) | * 1987 to present center bolt style valve covers if the heads used previously were perimeter style (1986 and earlier including the current production Goodwrench 350 crate motor) | ||
** Note: [http://www.crankshaftcoalition.com/wiki/Vortec_L31_cylinder_head#Small_port_Vortec_head_p.2Fn_25534351_.28bare.29_and_p.2Fn_25534421_.28assembled.29 GMPP small and large port Vortec heads] and other aftermarket Vortec heads accept either perimeter or center bolt valve covers [[File:Vortec valve-rocker.jpg|thumb|right|300px|Self aligning stamped steel rockers]] | ** Note: [http://www.crankshaftcoalition.com/wiki/Vortec_L31_cylinder_head#Small_port_Vortec_head_p.2Fn_25534351_.28bare.29_and_p.2Fn_25534421_.28assembled.29 GMPP small and large port Vortec heads] and other aftermarket Vortec heads accept either perimeter or center bolt valve covers [[File:Vortec valve-rocker.jpg|thumb|right|300px|Self aligning stamped steel rockers]] | ||
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<td class="wbg-blacktext" align="center" valign="top">Vsk4h53</td> | <td class="wbg-blacktext" align="center" valign="top">Vsk4h53</td> | ||
| − | <td class="wbg-blacktext" align="center" valign="top">Alex's Parts valve spring kit. Drop in fit, | + | <td class="wbg-blacktext" align="center" valign="top">Alex's Parts valve spring kit. Drop in fit, machine work not required up to .550" Lift, Hyd Roller.</td> |
</tr> | </tr> | ||
<tr class="wbg-blacktext" align="center" valign="top"> | <tr class="wbg-blacktext" align="center" valign="top"> | ||
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<td class="wbg-blacktext" align="center" valign="top">Vsk4h50</td> | <td class="wbg-blacktext" align="center" valign="top">Vsk4h50</td> | ||
| − | <td class="wbg-blacktext" align="center" valign="top">Alex's Parts valve spring kit. Drop in fit, | + | <td class="wbg-blacktext" align="center" valign="top">Alex's Parts valve spring kit. Drop in fit, machine work not required up to .550" Lift, Hyd Flat Tappet.</td> |
</tr> | </tr> | ||
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