TTi step vs. 340 manifolds

For your application, I like that cam.
It has 50* of overlap, 6 more than the factory 340 hydro.
IDK if you remember the 70s but when the 340 came out, I was in highschool. Quite a few of us had 340 cars.
They were fun lil cars, but we found out real quick that those logs were only good to about 85 mph then the power started falling off fast. To beat other cars, both you and your car, had to be quick off the line; and I always specified a shutdown at 85.
Headers changed all that.
Log manifolds kill the overlap. And mess up the intake manifold. 50 degrees ain't too bad, and a hi-stall will get you past the worst of it.
Assuming your 73 is still at or near 8/1 compression ratio;
>At 111* of power extraction(in at 106), that cam has the potential to make great hi-way fuel economy, once the Rs get up. But around town the overlap will mess things up. >In an 8/1 engine, with an Ica of 61* (in at 106) the bottom end is gonna be pretty soggy; so, with 3.23s I think you will be shopping for a higher stall.
Happy Hotrodding