Talk:Vortec L31 cylinder head
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| + | ==Photo dump== | ||
File:Vortec spring measurements.jpg | File:Vortec spring measurements.jpg | ||
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| + | ==Head similarities== | ||
| + | Does anybody know if these heads are exactly the same as the 1993 and 1994 and higher 4.3l V6 "Vortec" heads? | ||
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| + | All the parameters match. The valve sizes 1.94 I vs. 1.50 E, the "ski ramp" swirl on the roof of the intake, the eccentric location of the spark plug hole. | ||
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| + | I still have to cc the chambers but it starts to look like these heads are the same. Must be a reason that these engines produce 300 NM torque at only 2'800 rpm in stock trim. | ||
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| + | As I'm in the middle of a build it would be great to have that confirmed. --[[User:Error 401|Error 401]] 15:25, 18 February 2016 (MST) | ||
| + | :The 4.3L Chevy 90 degree V6 heads you're referring to are more closely related to the casting number 14102191 [[Swirl port SBC heads]]. --[[User:Cobalt327|Cobalt327]] 22:27, 18 February 2016 (MST) | ||
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