[MJN]

Originally Posted by 1970cstblazer

The Lime book is good, but some info is not 100 percent correct. For example, the engine code on my Blazer's 1970 350 4 speed is:

V0223TBC

V Flint

0223 February 23, 1970

TBC is listed in that book as a 1970 350/255BHP 4 barrel carb truck engine with a 3 speed manual trans.

Continuing to go off topic from the OP's original question..
Looks like https://www.nastyz28.com/gm-chevy-co...s-suffix-6.php is incorrect as well then even though it shows it as MT, 3 spd.
If there are better sources for this information feel free to post it up. The GM book simply shows Manual transmission, does not specify 3 speed or 4 speed. http://www.gmpartswiki.com/getpage?pageid=21050

The GM P&A catalog does not specify the change from F to V or addition of V to the engine plant identifier. The things I've seen that is common among these sources (Lime Book and nastyZ28) is F is Flint (Motor) and V is Flint (Engine). Also, the Lime Book is only V-8's, no mention of 6 cylinders and I guess I didn't say that applied to 6's either. Its possible the 6's kept the F prefix, we all know there are many other nuances with these trucks that don't seem to follow logic or are well documented.