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**Accelo** · 06-08-2023, 01:51 AM

GM had a PVC system in 1963.
below is a picture of the set up.

The last year for the road draft tube was 1962. After that the 283's and 327's still had the tube hole in the back of the block up until '67.

06-08-2023, 01:51 AM	#6
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,183	Re: 283 PCV question GM had a PVC system in 1963. below is a picture of the set up. The last year for the road draft tube was 1962. After that the 283's and 327's still had the tube hole in the back of the block up until '67. Attached Images