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Messages - opelitis1

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1
Decoding/Numbers / Re: Rochester 7029207 4 bbl date coding is??
« on: September 06, 2020, 01:07:24 PM »
Good morning gentlemen -  Kurt S and Gary
I would hope this question does not spoil your morning but, what dah heck eh??  No question is a stupid question... as the saying goes.

Why would GM date code the 1969 unit to either a 74 or 84 year?  Were they (GM) storing 69 Rochester carbs in hopes that someone in future  would want to purchase the carburetor, and at that  time,  the current codes such as line, numerical day, and abbreviated year would be applied to the '69 Rochester??

Have a good day laddies.  Up here in Montreal it is sunny and 57 degrees F.

Take care!
Ted   



 

2
Decoding/Numbers / Rochester 7029207 4 bbl date coding is??
« on: September 05, 2020, 08:06:06 PM »
Good afternoon gentlemen!!

Can you figure out for me the date coding on the above 1969 Carb??   Coding near the above number reads   1494.  I was Googling around re. the carb number and I came across the same carb number with a date code of 2794.  Company selling - describing unit  7029207 is saying that the date code
breaks down as (279th day of 1969.  Where does the number 4 come into play on the coding of 279 4   ??

If this was a Holley,  the coded date would break down as,   279th day of either 1974 or 1984.

This is a big carb re-building company with a 99.5 positive feedback rate with many Rochesters up on Ebay and I really do not think they would make a mistake
in the production year..
 
What does the number 4 in the date coding mean to you guys??

Thanks in advance
Ted

3
Decoding/Numbers / Re: Rochester 4bbl numbers
« on: September 05, 2020, 06:45:12 PM »
Good afternoon gentlemen!    Cannot see any Carter reference markings on the 2902 at all.    I do see ' Rochester Quadrajet'   then to the left vertically is
2902  DH  0989 .   Again I do not see Carter on the unit but, I do see Rochester with Quadrajet below it.
Ted

4
Decoding/Numbers / Re: Rochester 4bbl numbers
« on: August 02, 2020, 07:23:05 PM »
Looks like Oldsmobile in the late 60s - specifically 69' also had 5 numbered Rochester 4 bbl carbs during the 1st quarter of 1969.  Wonder why they had to step up production and bring in the Carter corporation who normally produced carbies for Chryco ?  Maybe because of the ongoing VietNam war ???
Ted

5
Decoding/Numbers / Re: Rochester 4bbl numbers
« on: August 02, 2020, 11:42:47 AM »
Good morning gentlemen!!
I have a few of these 5 numbered carbs.  Why were some of them 5 numbers and the rest  the usual seven number 4 bbl carbs?  Are the 5 numbered units
more valuable or are they all of equal value to the 7 numbered carbs?
From what I have here, it is the 1967 to 1969 Rochester 4 barrel units. Nothing after '69 as far as I can see.
Thanks in advance!
Ted

6
Decoding/Numbers / Rochester 4bbl numbers
« on: July 31, 2020, 10:33:18 PM »
7029202  vs  29202 carburetor numbers.     Why the missing numerics ( 70 ) on the second carb??
Thanks gentlemen.
Ted 

7
Originality / L79 SBC 0riginal 327 valve covers
« on: July 14, 2020, 10:51:16 AM »
Good morning gentlemen!!
I have 2 sets of the above valve covers with an  "0"   punched horizontally on the lower edge of the covers.  One set is definitely heavier than the other.
Can someone give me a bit of history on these covers?? What did the " 0 " signify??
One Googles and so much new non-vintage GM  stuff comes up with the response(s). 
Thanks in advance.
Ted


8
Originality / Re: 1967 302 small journal connecting rods
« on: July 06, 2020, 03:53:06 PM »
Will do from now on!
Merci encore / Thanks again  Byron
Ted

9
Originality / Re: 1967 302 small journal connecting rods
« on: July 05, 2020, 11:07:26 AM »
Thanks a lot Gary W  and  bcmiller for helping out on my  302 small journal  connecting rod identification.  One should remember that with only 3 - 4 light runs in a 3600 +
Firebird, that there was not time to wear the yellowish fogging from my rods vis-a-vis the pink rod that Mr. BCM put up for us. 
I was Googling the  Tracy Performance   site and the info on there with  pictures was very interesting to say the least.  I am sure the connecting rods on there are called
1967 302 SJ  "Floater"  Rods.   I believe the information was found under Vintage Parts > then Crankshafts > then look for the various early First Gen. connecting rods.
Great clear photos on this Tracy site.
I will post pics up when I get the TRW 060 Powerforged slugs from the 302 SJ rods for your interest showing the small ends of the connecting rods.
Anybody else want to chime in, I would appreciate it.
Have a great Sunday gentlemen!!
Ted

10
Originality / Re: 1967 302 small journal connecting rods
« on: June 24, 2020, 10:39:03 AM »
Good morning!!
Will take some pics tonight.  Big holiday up here,  St. Jean Baptiste and we a goin' up North to the Laurentians for the day.
Has been a wee bit warmish eh boys!? 

In the future, I am going to try a  a sound idle clip of my old NHRA cheater cam by Cam Dynamics with  something like  .384 lifts both sides and  245 degrees duration.
This cam has to be from the late 70s.  All this in a 355 c.i. but, with 76 cc  early, heavy 882 heads.  Still pops a wee bit though.

Ted


11
Originality / Re: 1967 302 small journal connecting rods
« on: June 23, 2020, 10:53:03 PM »
Good evening gentlemen!!
I will take other pics of the rods.  I was concentrating on the pressed vs floating aspects.   I will take other photos later tonight of the rods big end / small end etc etc
If there are specific shots you'd like, just lemme know.
Ted

12
Originality / Re: 1967 302 small journal connecting rods
« on: June 23, 2020, 10:35:15 AM »
Good morning!!
Looks like the same "fogging" that the large journal pink rods have, only, these small journal beasties are adorned with a  white / creamy / yellowish fog type.  We
ran them on the fabled 3838495 crank for 3 - 4 runs at the very most in a heavy 75 Firebird Esprit  +  Turbo 350 trans. 

Toooo bad Mr. JohnZ isn't close by as he was the "wealth of GM knowledge" and was always very willing to share his General Motors experience(s) to all who had questions.
He has (had)  a scrapbook if I remember correctly, and if something kinda tickled his fancy and was not already in this book.  He would let you know that he was going to include whatever he was missing into his book of memoires.
Anyways... if anyone else wants to chime in on me  302 1967 Z28 SJ connecting  rods,  you are welcome.
Have a good day eh boys!!!
Ted

13
Originality / Re: 1967 302 small journal connecting rods
« on: June 23, 2020, 04:05:36 AM »
Good evening   firstgenaddict   !!
Can't spin the pin as requested.  I do not remember the engine builder suggesting "floating pin" usage.  I have a few old TRW catalogues still hanging around and I'll see if they suggest using the clips with a pressed in pin or, was it by choice of the engine builder?
I kinda wonder about the yellowish / creamy discoloration on all the rods.  It could be that I applied a white grease say 40 years ago to protect the rods or when the magnaflux process was done  did it leave any discoloration??
Thanks!
Ted

Checked an  L2248 piston / rod combo and lo n behold, it used the same retention system as the

14
Originality / Re: 1967 302 small journal connecting rods
« on: June 21, 2020, 11:39:39 AM »
Good morning Gentlemen!!
BCM pics of me '68 335 h.p.  REAL suffix - coded will be a coming up.  Sorry for the delay.   Still after the connecting rod / pin / TRW conversation.  Have heard from one lad that the pins are 'press fit'  but the engine builder at the time in the mid 70s  to very early 80s used pin retainers as the newly bought TRW pistons already had grooves in them from when purchased.
This is the latest so far and I do appreciate Stingr69 and bcmiller giving me inputs. 
Pics of the 68  Camaro engine coming soon.  Suffix coded:   TO911  MY
Sorry for delay but....
Ted

15
Originality / Re: 1967 302 small journal connecting rods
« on: June 17, 2020, 05:02:18 PM »
Good afternoon bcmiller and 69Z28-RS . .
I took a few pics and sent 'em  over to Stingr69 as we were conversing re. the rods.  I'd be indebted to you if you'd take a gander at the photos. 
Maybe Stingr69 could send them to you. If not, my wife'll be back later but I'd need an e-mail address to send them to. 
Apparently the rods were heat-treated - magnafluxed  etc. etc. from  GM.   Thing that is great is, we put 3 - 4 runs on 'em and then the number 4 main saddle cracked in the block putting the rods n pistons  on hold for many, many a year until I just spotted them on my inventory listing.

A question for Bryon, is your SS396  looking for a real  1968 396 / 335 h.p. engine  # 3916323 suffix coded TO911 MY  18N31 X X X X  ??? Casted in  H  67  !

Let me know re. the connecting rod pics.  I appreciate your help gentlemen.

Ted

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