Throttle body size for heavy modded car
 

Hey guys I know its been a while, college has been taking up all of my time. Also I haven't had money so no mods. But Christmas is coming, so I'm looking into throttle bodies. I can get a 68 mm for fairly cheap. So If I could go that big I'd be happy. Let me know what size you think. Also I have Crower 402s and a header on the way. so keep that in mind.



~Engine~
JE 12.7:1 Pistons
Eagle H rods
ACL bearings
bored out to 82mm
type r water pump
type r oil pump
Lightened and balanced crank
blox intake mani
blox cam gears
Bosch Platinum plus spark plugs
Resurfaced head
Complete valve job
CTR crank pulley
GS-R timing belt
Place Racing motor mounts
88-91 Sir rear bracket
ARP Headstuds
d16 throttle body
Aem Hybrid CAI
APEXi WS2 Cat-Back Exhaust

~Trans~
Fidanza 7.5 lb Flywheel
ACT heavy duty clutch
Innovative Mounts Custom length B-series Shift-Linkage
da clutch cable

~Electronics~
Swap Shop Racing Obd-0 to Obd-1 Harness
Obd-1 P75
Tuned on chrome

~Cooling~
12" slim fan
Mishimoto Aluminum Radiator

~Fuel~
Benen Fuel rail
Precision 880cc injectors Low Impedance
blox fp gauge
Walbro 255 LPH-HP Fuel Pump
blox fuel pressure regulator

Nice to see you back on the forums, john :D

Anyway, I really see no reason you couldn't step up to a 68mm TB. I mean, you have an intake, intake manifold, cams and a header on the way, raised CR, and a full cat-back. At this point, I'd say the d16 throttle body could definitely be a restriction in the system.

Ya I kinda ran out of money at the end of the build, but someone told me I couldn't go bigger than 65 so I'm extremely confused. But ya hopefully after this, header, cam and nos the car will dominate...