[birdsandgoats]

I have been looking for a 9799068 intake for my June built 1970 trans am . i have found two intakes on Ebay that have a very early 69 casting date E289 and E279 could these be a screw up and be late 1970 casting https://www.ebay.com/itm/1970-Pontia...VZb6uK&vxp=mtr and https://www.ebay.com/itm/1970-70-Pon...hZ6Am4&vxp=mtr

['ol Pinion head]

No, very early '70 model usage "068" intakes were cast that early, I've had several. Will ck what date "068" intakes I have left, have around twenty '67-71 cast iron Pontiac Qjet intakes either here at new shop, or set aside and ready to be hauled over.

[John V.]

I can recall Fxx9 cast 455 blocks also so agree with OPH.

But will also note that the late production '69 Pontiacs got '69 engines (by Engine Manifest Code and EUN) that made use of some castings "intended" for '70 production that superseded the '69 specific castings. 400 blocks were one example of this.

This was especially true of the '69 Firebird engines as the '69 'bird continued in production until late Nov. '69 but was also true of other '69 Pontiacs produced at the tail end of the '69 model year.

Not certain, but the 9799068 intake may have also been used in these late '69 engines. Point is, these early castings may have gone into a late '69 engine but unlikely to have been made part of a late '70 engine.

[mlewisariz]

I have one with cast date A280. $225 plus shipping.

Mike

[poncho-mike]

I believe my 1970 Formula had E dates on the heads and intake. It was a July built car.

[FASTASSBIRD]

Oldest date I have is J089


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[unruhjonny]

interesting...

[poncho-mike]

The C and D dates were pretty common on the heads and intakes used on 70 Formulas and T/As. I've had three 70 Formulas and several 70 Trans Ams, and I don't think I had any that were shipped before April 1970. I might still have an April dated 068 intake. I know I have a JXX9, and I looked through my stash for a Jan/Feb intake for someone.

[mlewisariz]

My 70 has a D280 intake. Build date 06B. Heads are D290, and blockE200.

[unruhjonny]

/\ that date combination seems a little odd to me...
If you don't mind me asking, which engine?

[FASTASSBIRD]

Sounds about right. My April car has a March 10 intake and a End if Jan set of heads on a March date block. I did extensive research and found this to be about right for early built cars


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[poncho-mike]

I just looked at my old pictures. My 70 Formula was a very late production car. The cowl wall tag was 07C. I am pretty sure the heads were early to mid-May.

[unruhjonny]

what I was finding odd about mle's build date versus engine casting dates was the blocks casting date of may 20th;
second week of june build date;
late april intake and heads.

now, I really have only paid attention to WS, YZ, and WT engines (all use #12 heads);
Typically I have observed the block is the earliest cast part - I have never read of the block's cast date nearly a full month after the other parts.

I have observed that the intake is either very close to the block cast date, or later - not the reverse;
heads seem to be a different deal because they were made in larger(?) batches, and could preceed the block cast date by a decent margain.
I am by no means an expert, moreover I am posting this to help, and hopefully learn.

[unruhjonny]

Originally Posted by poncho-mike

I just looked at my old pictures. My 70 Formula was a very late production car. The cowl wall tag was 07C. I am pretty sure the heads were early to mid-May.

this seems to follow the "formula" I have been observing;
Your car was built five weeks after mle's, and you have cast dates BEFORE his block...

This has all lead me to searching for other cast date versus build date numbers I have recorded... one example in particular seems to be elluding me...

[mlewisariz]

My block is a WS RAIII w/12 heads and vin is correct on block. It is a Van Nuys car which was ordered to dealer stock(not customer ordered) by Bill Barry Pontiac in Santa Ana, Ca. I purchased the car in 1973 from the original owner. They told me they purchased it off the floor of the dealership as walk in customer.

Also,referencing Muscle Machines November 2016 issue,the featured 70 T/A was built in 3rd week of June(063) and sold on July 3rd at Bob Longpre Pontiac in Westminister Ca. The original California plate shown in the .article is 887 BQH. My cars original plate was xxx BZS. Plates were issued by DMV sequentially, according to sale date, and mailed to customer after delivery. Therefore, my car w/BZH wasn't sold till later, probably in September or October. In addition, I knew the original owner of the HMM car. we met in the eighties and discussed the difference in similar build dates and my later tags. Somewhere I should have a pic of both cars together.

[mlewisariz]

I/We seem to have hijacked birds post. I'l lstart a new thread about my T/A nos. Maybe someone could shed some light on the anomaly of build date/cast date .differences.

Mike

[unruhjonny]

Thanks Mike for replying;
I'm pretty confident 'birds got the answer he was looking for;
The question seemed reasonable once I stopped to understand it...
"May 1969" casting date for that intake;
which means that concievably many 1970 engine parts were cast in excess of twelve months... that is odd.