V 0910: Flint, Mi September 10
THP: 71 307 Truck 200hp manual trans, L14 RPO, 1 2bbl carb C20/C30 application
Looks like GM may have reused this code later on too according to my suffix code book but The Lime Book doesn't list THP for anything but the '71 307.
https://www.ncrs.org/ok/LIME_BOOK_2018.pdf
1985 350 Truck 165 hp manual trans LS9 RPO 1 4bbl carb C/K 10-30 application
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'51 South Bend Model "9A"
'56 Chevy 3600 NAPCO
'74 Chevy Cheyenne Super K20-restored on 37's
'72 GMC Sierra Custom K2500- in progress
'08 GMC Envoy Denali
'12 GMC Sierra 2500HD Denali
'17 GMC Yukon XL
VCCA member #58596
http://www.nohrco.com