1971 Z28 Evap Canister pics needed?

I would assume that the equipment was left over form the 70 run and used until it was gone at the beginning of 71. If the left fender accommodates the washer tank that would also be a 70 fender. There are several variations on inner fenders in the move from the frame mounted canister to the one mounted to the inner fender behind the light.

If you have all the parts I wouldn't sweat it. Most of that stuff ended up in the garbage back in the day so it would be highly unlikely that smog was reinterduced at a latter date and with the low parts production of the 70 design what are the odds?

I would say LA was using up the left over stock on the line JMO

Check on in the original drive train topic category thats where dates change overs etc are discussed and original build topics

 

^^ I really don’t see a D built car using left over 70 parts for a 71 year change. That’s just too late in the game. The washer bottle mount on the fender is not a 70 only. All 70-77 production fenders have that sheet metal. I suspect someone added it or possibly a frame swap. In 71 the inner fender is stamped for the canister. I would put it where it belongs if it’s a correct restoration

 

That's interesting. The last page of the 70 assembly manual I posted is for RPO Z28 and it shows the canister.

 

It looks correct on configuration of sheet metal for 71 - here is a pick of 70 and another of 71




For reference

 

As far as parts go I do think that there were carryover situations with remaining parts into the 71 model year, the one piece spoiler being an example, maybe its an Van Nuys vs Norwood thing

 

The canister is NA-9 only....so in 1970, it was mandatory on cars sold into CA. The rest were 49 state compliant and did not get the NA-9 emissions.

Back to the location issue on the 71Z....interesting, as we do know changes occurred during the 1970 model year in preparation for the evap cannister. For example, the driver's side inner fender well received the depression for the cannister, but no hole in April 1970. Is it possible early (and yes, an 08D car is early for the 1971 production run), cars used the 70 evap arrangement?....sure, but I am not aware of any other 71 cars that early to use as a benchmark.

 

Oh yes if we are talking Aug of 1970 lol

 

Does the subframe date match your car's date? Look on the drivers side frame rail at the rear - post a pic of the stamp. It may be possible the subframe was replaced in the past. It seems I've read in the past the canisters are date coded as well - have you checked that?

Gary

 

I still would think that it would be unlikely that even if a sub-frame swap was done that anyone would carry the 70 evap if the car originally had the 71 config. A subframe swap would most likely indicate that severe damage was done the car at one time. For a long time evap parts would have been readily available from chevy so why.

 

In the end, it really doesn’t matter. Question is what config the OP is going to use? I would make it 71 correct unless you can undoubtably prove it was a carry over 70 build.