"HEY GRUMPYVETTE? Ive got a 327 sbc in a 57 chevy with a muncie 4 speed, and I want to swap to a tunnel ram intake ,mostly for looks but want to make the car look and sound bad , any suggestions on cam to use?"
one reason a properly port matched tunnel ram intake flows efficiently is a strait path to the intake valve, in the cylinder head from the plenum
I doubt you can find many long term hot rod guys that have NOt at least thought about swapping to a tunnel ram or some multi carb or injected system, but you can,t just throw a tunnel ram on a low compression 327 without considering the drive train ,compression, ignition, headers, tire diam. cars weight trans gearing , piston to valve clearance, spring bind,etc.
and effect the larger cam will have.
a tunnel ram intakes designed to operate in the 4000-8000rpm power band on most sbc engines. a cam thats designed to operate in that same power band will require a minimum of 10.5:1 compression,
back in the day...1960-1970s
a common combo that kicked butt was
a car under 3200 lbs with a muncie 4 speed,
ported fuelie heads
11.0:1-11.5:1 compression
two 450 holleys
a vertex magneto or similar good ignition,
open long tube headers
26"-28" diam tires (slicks help)
a 4.11:1-4.56:1 rear gear
a CRANE 110921 cam
youll want to launch at about 4000rpm and shift at about 6700rpm with a 327, but ID also point out the same basic combo on a larger 383-406 works even better but youll be shifting at a lower 6300rpm-6400rpm with the larger displacement because the heads run out of flow capacity far sooner
a few minutes reading thru a few links can save you a great deal of time and money
viewtopic.php?f=52&t=181
viewtopic.php?f=50&t=1660&p=4554&hilit=bending+steel#p4554
viewtopic.php?f=52&t=1070
viewtopic.php?f=52&t=181
viewtopic.php?f=55&t=4381&p=16285&hilit=flex+fuel#p16285
viewtopic.php?f=55&t=1939
viewtopic.php?f=55&t=635
viewtopic.php?f=53&t=343&p=16772&hilit=redline#p16772
viewtopic.php?f=52&t=3613&p=12743&hilit=fuelie+heads#p12743
viewtopic.php?f=44&t=2099&p=17024&hilit=fuelie+heads#p17024
viewtopic.php?f=55&t=211
viewtopic.php?f=55&t=5175
viewtopic.php?f=52&t=5078
viewtopic.php?f=55&t=109
one reason a properly port matched tunnel ram intake flows efficiently is a strait path to the intake valve, in the cylinder head from the plenum
I doubt you can find many long term hot rod guys that have NOt at least thought about swapping to a tunnel ram or some multi carb or injected system, but you can,t just throw a tunnel ram on a low compression 327 without considering the drive train ,compression, ignition, headers, tire diam. cars weight trans gearing , piston to valve clearance, spring bind,etc.
and effect the larger cam will have.
a tunnel ram intakes designed to operate in the 4000-8000rpm power band on most sbc engines. a cam thats designed to operate in that same power band will require a minimum of 10.5:1 compression,
back in the day...1960-1970s
a common combo that kicked butt was
a car under 3200 lbs with a muncie 4 speed,
ported fuelie heads
11.0:1-11.5:1 compression
two 450 holleys
a vertex magneto or similar good ignition,
open long tube headers
26"-28" diam tires (slicks help)
a 4.11:1-4.56:1 rear gear
a CRANE 110921 cam
youll want to launch at about 4000rpm and shift at about 6700rpm with a 327, but ID also point out the same basic combo on a larger 383-406 works even better but youll be shifting at a lower 6300rpm-6400rpm with the larger displacement because the heads run out of flow capacity far sooner
a few minutes reading thru a few links can save you a great deal of time and money
viewtopic.php?f=52&t=181
viewtopic.php?f=50&t=1660&p=4554&hilit=bending+steel#p4554
viewtopic.php?f=52&t=1070
viewtopic.php?f=52&t=181
viewtopic.php?f=55&t=4381&p=16285&hilit=flex+fuel#p16285
viewtopic.php?f=55&t=1939
viewtopic.php?f=55&t=635
viewtopic.php?f=53&t=343&p=16772&hilit=redline#p16772
viewtopic.php?f=52&t=3613&p=12743&hilit=fuelie+heads#p12743
viewtopic.php?f=44&t=2099&p=17024&hilit=fuelie+heads#p17024
viewtopic.php?f=55&t=211
viewtopic.php?f=55&t=5175
viewtopic.php?f=52&t=5078
viewtopic.php?f=55&t=109