Dan87IROC-Z

I am looking at the port CC, like 180cc or 190cc ect. Accel, TPIS, Edlebrock, MiniRam, ect. I know they can be ported out to be larger, but what are the sizes out of the box?

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

Dan87IROC-Z

btt

GregWestphal

iTrader: (1)

I think you're confusing to different terms. The cylinder head intake port size is measured in cubic centimeters and (of course) is just the volume of the port. Intake manifold ports are measured by their area where it meets the cylinder head, like 1.99" X 1.25". You want the intake manifold port size to be the same as the head's intake port size (height X width). If they don't match up pretty closely, you can port out the intake's openings (aka: gasket matching).

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Greg Westphal
'87 IROC 305TPI/A4