IMHO all these intakes need work before bolting on and going
T2 has Small runners that have their runner bend up near the plenum then a nice straight shot at the IV which for a Single Plane is one that will produce a Lot of Torque and decent top end with minimal low rpm loss, I Really Like the T2 if i can Do a Full Port Match all the way up the runners and some plenum work, Good Street Its capable of over 665hp on pump gas!
But it isn't capable of really tall intake ports i believe 2.3 is the tallest
The RPM is also a Good Intake and can be Port matched to a 2.4+ intake port and can flow 340-375+cfm
I built a 470 Pump gas motor with 87cc e-heads ported to 322 @ .650i 242e old faithfull
Ported RPM, 2" headers 10.23:1 made 568hp at 5600 and 588tq at 4300 and i heard of a guy making 580 with one on pump gas and 350cnc e-heads
The Tomahawk is a decent intake, Ive seen a Fuel Injected 467 with a Port Matched Tomahawk and 330cnc E-heads at mid 10's comp with a mid 240'si 250's ex hyd roller make 592hp near 6k and 575tq so all three can do the job
I'd use a Ported T2 though FWIW
Oh and if you use a Tomahawk They NEED at least a 1" spacer with Q-jet!
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D.S.R.E. Your NW Pontiac Street/Strip Engine Builder, Specializing in Cylinder Head,Intake Manifold,and Exhaust Manifold Porting services and Building the Most Efficient stock rebuilds to Hi HP Pump Gas and Race Combinations for Pontiac,Buicks,Olds,FE Fords,385 Series and HP Gen 3 and 4 LS engines!
2006 silvy Z71 4X4,383 LS 600+hp NA
Shared Toy-66 Lemans 470cid by me 537hp 580tq-manifolds, 570hp 590tq-2"headers,custom cam,rpm intake, mild e-heads, Looks stock ;-}
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