Id suggest you start by reading these linked threads,
keep in mind a tunnel ram intake is designed to run in the 3500 rpm-7000 plus rpm power band,
its an intake designed to maximize power and its generally not the best choice for a street car.
and that generally requires a cam with about a 240 @ .050 lift or greater duration, usually a reasonably tight 106-109 LSA,
open headers, at least 10.5:1 compression ratio,
and rear gears in the 3.73:1-4.56:1 range and a 3500 rpm stall speed or higher converter,
or a manual transmission to maximize the dual quad/tunnel ram intakes designed power curve potential.
yeah you can have a different basic combo, but the further you get from the design parameters,
the more difficult it becomes to tune and get it to run with a brisk crisp throttle responce, and no other issues.
and yes the larger the displacement , the higher the compression ratio, and closer the cam, duration,compression and exhaust header tune match
, the drive train gear ratios and the lighter the car is,
so the engine can maximize that intended upper rpm power band,
all the time the better that tunnel ram intake design, will tend to run
I have an Edelbrock 1406 carburetor (might need to be rebuilt), it came with the LM1 350 I bought for my 64 El Camino. The el camino originally came with a throttle rod lever that attaches to the carburetor from the gas pedal, it's not in good shape. I also have a bracket for a throttle cable...
garage.grumpysperformance.com
http://garage.grumpysperformance.com/index.php?threads/dual-quads.444/
http://garage.grumpysperformance.com/index.php?threads/tuning-a-tunnel-ram-intake.5175/
http://garage.grumpysperformance.com/index.php?threads/holley-accelerator-pumps-cams.1790/
http://garage.grumpysperformance.com/index.php?threads/holley-annular-vs-down-leg-boosters.5229/
http://garage.grumpysperformance.com/index.php?threads/carb-tuning-info-and-links.109/
http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/
http://garage.grumpysperformance.com/index.php?threads/holley-carb-power-valves.1639/
http://garage.grumpysperformance.co...cedure-step-by-step-guide-with-pictures.5378/
http://garage.grumpysperformance.com/index.php?threads/is-backpressure-hurting-your-combo.495/