318 Build

Intsall that cam into your low compression engine, against all better judgement. If it's a super slow rate of lift as that, this is what it will like;
Static compression ratio of 8.0:1.
Effective stroke is 2.52 inches.
Your dynamic compression ratio is 6.32:1 .
Your dynamic cranking pressure is 117.18 PSI.
V/P (Volume to Pressure Index) is 85........................................................85
A VP of 85 is absolutely miserably sucked out.

This is a "race cam". And it will forever be a race cam in a teener. This cam requires
Static compression ratio of 10.3:1.
Effective stroke is 2.52 inches.
Your dynamic compression ratio is 8.07:1 .
Your dynamic cranking pressure is 161.70 PSI.
V/P (Volume to Pressure Index) is 117.................................................117VP
Notice the VP, a measure of low-rpm performance is still way less than the stock cammed 318 with pumped up compression, which was 122.

nm9 has the right idea. If you want a tire fryer, AND comfortable hiway cruising, AND some midrange, And some top-end, from a 318; then you are gonna have to pump it up.
Or get a bigger engine,lol. You're trying to cover too many bases with too much of a weight penalty in the chassis. Kick 400 pounds out of that chassis, then the teener has a fighting chance of covering all the bases.
I see a big decision on your horizon.
Which cam spec, intake, head, and carb combo would you recommend for a just a hot rodded small block with a ldb4. Having power around 35-5500 and a lopey idle. I'd put the 4 barrel on the stock but I don't think it can use it.