I misread your original question. I didn't see the word "partial". I thought you were looking for the full v.i.n. by the heater on the firewall. I hope someone has an answer to your question. If there IS a partial v.i.n. located where you were told, one could compare that to the tag and see if they matched or not(those of us who have tags). If not, then the tag was probably removed from another body and attached to the current body. Not sure I'd want to know that info at this point....
Correct me if I'm wrong, but wasn't the v.i.n. stamped on top of the frame rail behind the drivers side rear tire? Or, am I thinking of something else? I guess if it is, it wouldn't necessarily match the body tho either... I see a potential headache in the making......
Originally Posted by Too Many Projects
Yes, there could be a partial VIN stamped into the top side of the frame rail behind the left rear tire. The issue with finding a partial VIN in either area is that it is partial. It DOES NOT include the prefix that would indicate what model it is. It would be in the format of 0 for 70 P, B, 1 etc for the plant code and then the 6 sequence number of the VIN. You can piece together the rest of it assuming it's a GTO as 24237 but if it comes up blank at PHS then you would need to submit another request using the LeMans prefix 37 for Sport, 35 for LeMans, and 33 for Tempest until they found it.
Changing disk brakes to drum brakes would require removing the axels from the rear and installing drum backing plates front and rear and would require a different brake line on the differential. Also, rear disk brake were not an option on the early GTO.
There is a partial VIN located on the left rear frame rail (on the outer side) just behind the rear drivers tire. If the last 6 digits on the VIN start with a 6 (6
00001) the car would be a 6 cylinder, V-8 cars started with a 1 (1
Look for evidence of dual exhaust pipe hangers which were standard for the GTO, also I believe the 70 GTO had boxed rear lower control arms with a sway bar, the 455cid Judge came standard with a type-c 12 bolt rear end and the left trunk torque rod was heavy duty to lift the added weight of the spoiler.
The first part of the frame vin is missing but you could run PHS using 242370 and the frame vin I believe includes the code for the production plant. GTO did not offer a b-pillar in 70, I believe the tempest did have the post option.
I'm not that familiar with the 2nd generation, my knowledge is from 64 thru 67, I don't believe the VIN was stamped anywhere on the firewall, the bodies should only be stamped with the GM or fisher part number.
Good luck and welcome to the forum,