Can I use B or C body manifolds fore better flow on my sleeper GTS?

If we were to have a stock stroke (gasp) 440 at +.04 with 10.5 comp and a .245 @ .05 / 108 sep cam and a good head (stealth) or better.
what is the "loss" of the manifold..?

Click to expand...

With a faster rate cam and heads that have had a little clean up, and a good intake manifold...... that’s an easy 500hp combo with headers.

I’d say 40-50 less with manifolds.

The better the motor is, the more the manifolds hurt it.