CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: 9T4Z on March 06, 2011, 02:47:44 PM

Title: Acid wash reveals vin on engine block
Post by: 9T4Z on March 06, 2011, 02:47:44 PM

Hey all.... when I purchased my 69, the previous owner told me there was no vin on the block.  A couple of years ago I spent some time with some Muriatic acid and washed the rough casting beside the oil filter...

The Vin showed up and I got several photo's before it 'disappeared' again....   the vin plate is for comparison you can make out most numbers..


https://picasaweb.google.com/115099132089091609481/DropBox?authkey=Gv1sRgCMzo8peymq26mwE&pli=1&gsessionid=eGfiHMbGqRPNA3iyNh0tCQ#5580976497379671810 (https://picasaweb.google.com/115099132089091609481/DropBox?authkey=Gv1sRgCMzo8peymq26mwE&pli=1&gsessionid=eGfiHMbGqRPNA3iyNh0tCQ#5580976497379671810)

Title: Re: Acid wash reveals vin on engine block
Post by: sd1968z28 on March 06, 2011, 09:21:23 PM

cool, now you know for sure.

Title: Re: Acid wash reveals vin on engine block
Post by: IZRSSS on March 06, 2011, 10:21:52 PM

What are you plans? Are you going to leave it alone or have it decked and restamped? Or...are you going to restamp as is?

Title: Re: Acid wash reveals vin on engine block
Post by: 9T4Z on March 06, 2011, 10:39:34 PM

Its on the rough cast area by the oil filter... so put some clear coat and just left it covered with that.... nice find though.  :D
Not sure who to give credit to... read about acid lifting vin some where before I tried it....

Title: Re: Acid wash reveals vin on engine block
Post by: lasereye on March 07, 2011, 01:51:02 AM

No wonder I can't read mine...I can barely see yours. ;D But then mine is still in the car, 41 years of grime....yada yada....
Glad to see there is hope for when I finally pull the motor. Nice job and pics.

Title: Re: Acid wash reveals vin on engine block
Post by: sixt9x33rs on March 19, 2011, 11:35:30 PM

Probably a stupid question, but can you acid was it while in the car?

Title: Re: Acid wash reveals vin on engine block
Post by: 9T4Z on April 02, 2011, 02:21:09 PM

No such thing as stupid questions.  Yes I did it in the car.  Took off the oil filter and just kept running a paint brush dipped in Muriatic acid on it.  Kept taking photo's on Macro mode before I could tell where the numbers were.... fairly high up on the cast area.