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Old 05-31-2009, 11:41 PM
Old'n'young
 
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373 1539

hey guys i havent been on for awhile. I recently bought a truck though. Its a sixty eight chevy cheyeene super sport with a muncie four speed. I really like it. Anyways the guy I bought it from said the motor was a 350. Well I knew that wasnt the real deal cause it had the rectangles on the heads with the the single point. i know thats a power pack head.

Well I pulled the valve covers and the numbers are the same and their both 3731539. The engine has a point distributorand also a blow off valve behind the ditributor. The engine block cast is the same as the head. The thing that gets me is that the suffix code. its T225D and that doesnt make any sense to me.

So if any one has any info please let me know. Im pulling the motor out this week to rebuild it. It runs like a top, but I would really like to go through it. Its pretty neat, the oil filter is in a metal canister and the oil plug is in front of the oil pan not on the sides. It has the ram horn headers too. I dont know if this engine is great for performance, so just let me know what you think.

oh and something else, the carburator on it is a holley but looks like a elderbrok or a carter. I have never scene before. Thanks.

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Old 06-01-2009, 12:16 AM
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Quote:
Originally Posted by NaythanOldskool
I pulled the valve covers and the numbers are the same and their both 3731539. The engine has a point distributorand also a blow off valve behind the ditributor. The engine block cast is the same as the head. The thing that gets me is that the suffix code. its T225D and that doesnt make any sense to me.
You most likely have a 283. I see no blocks w/the same cast number as the one for your heads, some are close- you might want to double check the block c/n.

HEADS
3731539....57......283..........283 HP

SUFFIX CODE "D"
D 56 265 Truck 205 HP RPO 410 w/Manual 4-Brl
D 58 283 Impala 185 HP Base Power glide 2-Brl
D 59 283 Impala 185 HP Base Power glide 2-Brl
D 60 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 61 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 62 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 63 283 Impala 195 HP Base Power glide 2-Brl Hyd Cam
D 64 283 Impala 195 HP Base Power glide 2-Brl Hyd Cam

Quote:
the carburator on it is a holley but looks like a elderbrok or a carter.
There's a Rochester 4G from that era that looks a little like a Carter/Eddy, but I'm not familiar w/a Holley that looks like that.
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Old 06-01-2009, 09:53 PM
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thanks

well you were right about theenine number, i double checked it today and its 3756519, and that i guess is a 283 from 58 2 62. Now if this is the case why are 57 fulie heads on it. Im sorry Im so enquisitive and sloppy, but I ve been out in the feild all day wrestling horses.

And if you have anyway of decifiring the suffix code that would be great. Ive been trying for three days no luck. its T522D

It seems to me its missing a letter or a number.

Oh and as for the holley, the number is L 7454 and looks just like the carter. I orderd a carb kit and all the applications on the box says for carters and rochesters. I have never scene one and no one I have talked to has evre scene or heard of one.

If youd like to see any pictures to help me out let me know and Ill up load some. Thanks for your time greatly. I wish i had more time to be one here, but its summer and I run a 2000 acre ranch in southwest wisconsin. Alot of work. i actually used to come on here alot in the winter.

okay sorry for runnin on and thanks again. I havent pulled the engine yet, but since its so old of a block, is the steel in the block pretty good like a high ten or tweenty?

Nathan
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Old 06-01-2009, 11:50 PM
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hi there

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.
good luck!

Last edited by fast68; 06-02-2009 at 12:15 AM.
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Old 06-02-2009, 06:57 AM
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Quote:
Originally Posted by NaythanOldskool
And if you have anyway of decifiring the suffix code that would be great. Ive been trying for three days no luck. its T522D
"T" is Tonawannda (sp) manufacturing plant
"522" is a date code
Suffix "D" is listed below (and previously):

SUFFIX CODE "D"
D 56 265 Truck 205 HP RPO 410 w/Manual 4-Brl
D 58 283 Impala 185 HP Base Power glide 2-Brl
D 59 283 Impala 185 HP Base Power glide 2-Brl
D 60 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 61 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 62 283 Impala 170 HP Base Power glide 2-Brl Hyd Cam
D 63 283 Impala 195 HP Base Power glide 2-Brl Hyd Cam
D 64 283 Impala 195 HP Base Power glide 2-Brl Hyd Cam
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