Whatis a acceptable separation in weeks or days between heads to block intake to car?
Vin is 549401
Date code on the car is 11D
Date code on the block casting K 12 8
Stamping on the block is V1I19DZ

This is the orig block to my car I don't have any heads or intake.

Here is some info. on my Van Nuys car that you can use for comparison. They are all original to the car:
Date code on cowl tag: 02C
Block casting date code: B 5 9
Stamping on pad: V0211DZ
Passenger side "186" head dated A 30 9
Drivers side "186" head dated A 31 9
Intake dated 1-10-69

Hope that helps!!