273 Engine _ Need ID of Intake

When using the thicker Felpro intake gaskets the bead of RTV needs to be larger also.
I got the block clean enough to mark where the sealant belongs with a sharpie.
My bead was about 3/8 wide and about 1/4 inch tall, applied from the end of the tube, no nozzle. The small amount the pushed outward was rubbed inward with a finger.
I hadn't used these thick gaskets before so I did a lot of research. Glad I did. Got it right the first time. Note ; I used 2 pieces of 3/8 allthread as guides. One 8 inches at right rearward and one 6 inches at right forward. didn't read that anywhere, just think of it. distributor must be removed to use the guides.
I let it sit for 12 hours before starting. Ran 15 minutes, let it cool then retorqued the intake to 45 ft lbs. Needed a distributer wrench to retourque the left rear bolt.
Hope this helps