Also my cowl flapper goes open when I shut the motor off.Is there some kind one way check valve in the system and is there any adjustment in the hood release.Mines a bitch to open.

The cowl flapper should go open when you shut the motor off originally.You should have a 1 way check valve installed in the rubber hose,that's hooked up to manifold vacuum.

First check your adjustable hood bumpers on the core support to make sure they are at the proper height so that your hood sits flush with your fenders when closed and latched. If it sits high, then these need to be adjusted down (i.e., turned in or tightened). If that's adjusted correctly, then adjust the hood striker "pin" on the underside of the hood by turning it counterclockwise half a turn and then test. Adjust further in or out as necessary. The hood release itself is meant to be fixed in place without adjustment, but it can be "tweaked," so to speak.

Great stuff.Big thanks to all who posted.

Hey Ziggy Congrats on the purchase, white actually looks great for an SS !!

Any Chevelle Built out of Oshawa and Shipped out to the USA had records from GM of Canada.
Also any SS ordered out of Canada but built in a USA plant also got into the GM of Canada records or Microfiche system.
For an Example an LS6 or L78 ordered out of Canada in 1970 all built in USA plants (Oshawa only built L34 or LS5 that year) also had GM of Canada Records.
Even L34 or LS5 SS's built in USA plants but imported new into Canada had the GM of Canada Records as sometimes Chevrolet would use a USA plant to fill an order instead of the Oshawa Canada Plant.
And we all know the common scenario that all Oshawa Built Cars had Records being ordered from a Canadian Customer.