Reply to ""L" engine"

George PAdmin.

quote:
Originally posted by Rapier:
...George, am I correct?...

The '70 - '71 M code motor was called a 351C 4V.

The late '71 - '72 Q code motor was called a 351 Cobra Jet

The '73 - '74 Q code motor was called a 351C 4V, even though in essence it was a Cobra Jet spec motor with tweeks for exhaust emissions.

The '73 - '74 motor was installed in all the US Panteras (the L models). Technically the motor in Dennis' L should have the small valves.

There are 3 explanations:

(1) Ford mixed and matched motor parts (installed 4V valves in the '73 casting, or installed '72 heads on a '73/'74 short block)
(2) A previous owner has swapped heads
(3) A previous machine shop installed larger valves during the course of a valve job (intentionally for performance, or unintentionally, not knowing the '73 heads actually required the smaller valves)

cowboy from hell

2/1/078:13 AM

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...