the cheyenne and cheyenne super packages did not exist in 1968. these two packages were new for 1971 and were simply interior deluxe appearance equipment packages, color keyed/matching interior pieces, and chrome trim pieces, cargo light, cigar lighter, etc.
in these trucks there was the 283 307 327 and 350
the 4 speed was just a big bulky top loaded CH465 or in rare examples a NP435 or NP435CR or a warner
these trannies= depending on the year exactly= were rpo codes M20 through M28
what are you doing to the poor truck ?
hope you are going to be good to it.,
have any pics ?
the metal canister type oil filter was what they used in these trucks. extremely common... they also had the ram horn exh manifolds through 72 yes. and they are the ordinary smogger crappy small 2" exit ones. not like the vette and hi-po 2.5" exit ones.
a 4bbl engine would be a 327 or 350 engine in these trucks.
there were no 4 bbl truck 307 or 283 engines
but apparently it doesnt matter because at least the entire top end of the engine is not original to the truck regardless.
if you look on the vin code plate on the door frame jamb it will be something like ce148j
the 5th digit of the vin code is the last digit of the year of the truck. the exmaple of the first part of the vin code i just gave you is a 1968 2wd pickup built in janesville wis.
if you lok in the glovebox on the door is the RPo sticker, it will list the engine as one of the L-codes,
such as LS1 or LM1 for example and will describe the engine, as a 350 etc.
1967 and 1968 trucks had a steel painted grille, either white, or body color and two long slot opening across ways. and a red or blue bowtie in the center, most were red however. blue was very uncommon.
the 69-72 were aluminum shiny grille years.
Last edited by fast68; 06-02-2009 at 12:15 AM.