068 Questions

[Phalen409]

I have posted this as a short block several months ago with questions about the pistons. Decided to strip it down to the bare block along with another early cast date 068 block today. I'm getting them prepped for sale on our site, but have questions about the date of June 8, 1961. I have posted images of the block stamp as well as the casting date. Block appears to be standard bore. Questions: When did the 068 block replace the 623 block? Any chance this could have been one of the late produced runs of the 142 1961 409's? Likely not the case. When did the 1962 model year 409 hit the showroom? Pistons are GM that have been modified for ......?? Flame travel?? Any old school speculation. Crank is mint. Where are you Pat & Cecil??

 

[63 dream'n]

Doesn’t the production year start in August……..So my guess would be August of 61, for the 62 model year

 

[scott hall]

Cast in June but it wasn't assembled until Nov 22, 61 for 62 production. The 068 block came out before the end of 61 production.

This was another block another member was asking about.

 

[DIV1RACER-2]

I have an 068 w/ the same casting date ... Pretty early for the 62 cars ... Guess the were planning on selling lots of them !!

 

[1964SuperStocker]

Also, we have an idea of how many cars sold and about when they were made. Who has the production numbers/dates of the engines, Pat maybe? Could this be early 62' run or possibly late 61' replacement blocks? Not sure how they would have handled the transition with replacement blocks for the 409's in 61' being such a new option.

 

[Tom Kochtanek]

I know of an "068" casting that was dated "E 24 61". That's pretty dang early .

If i remember correctly it had a very bizarre stamping, not what one would expect (not QA or QB).

 

[BSL409]

Maybe they were using Z11 heads ?

 

[63impalass409]

Replacement blocks would not be stamped would they especially with a serial #?

 

[NCPOP]

I have this 409 crank in the 348 stroker. I wonder if it is a 61? I never found a complete number. The last 3 digits of a 61 are 072.

 

[409forever]

if the stamping # plays out by my research is T1107QB translates to Tonawanda Nov 07 QB would be 1962 since the block was cast in June of 61
IMO but hopefully someone will help out

 

[BSL409]

if the stamping # plays out by my research is T1107QB translates to Tonawanda Nov 07 QB would be 1962 since the block was cast in June of 61
IMO but hopefully someone will help out

Would be Nov 07 of 61 what is the build date of your car? rule of thumb is 3 months from engine build date

 

[rstreet]

I have posted this as a short block several months ago with questions about the pistons. Decided to strip it down to the bare block along with another early cast date 068 block today. I'm getting them prepped for sale on our site, but have questions about the date of June 8, 1961. I have posted images of the block stamp as well as the casting date. Block appears to be standard bore. Questions: When did the 068 block replace the 623 block? Any chance this could have been one of the late produced runs of the 142 1961 409's? Likely not the case. When did the 1962 model year 409 hit the showroom? Pistons are GM that have been modified for ......?? Flame travel?? Any old school speculation. Crank is mint. Where are you Pat & Cecil??View attachment 121390View attachment 121396View attachment 121395View attachment 121394View attachment 121393View attachment 121392View attachment 121391

My opinion is since your block has a sequence number it really didn’t have any connection to a 623 1961 block. Here is the stamp pad of my 1961 SS 409 and no sequence number