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Old 02-26-2021, 08:09 AM
SD455DJ SD455DJ is offline
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Join Date: Aug 2009
Location: Grand Rapids, MI
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Quote:
Originally Posted by 'ol Pinion head View Post
The lack of factory installed frame braces on Mikes prev 455HO HD 3spd GT-37 does follow a small trend. As mentioned previously, have yet to run across a '71 233 series M13 factory build that had them but nearly all of those were 350 2bbl M13 builds. The factory '71 Pontiac A-body Assembly Manual notes the frame braces were used with the L78 & LS5 engines without M40, but there is no notation of thwithout being installed with the L78 & LS5 with the HD 3spd M13. Not the first instance of how these '71's were actually built versus what many could infer from the Assembly Manual.
My guess is if the assembly line ran out of brackets they moved the car on down the line...or since they saw the GT-37 was equipped with the M-13 3-speed trans they assumed it didn't need them like any plain old 350 2-bbl car.

Dennis