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Bigger throttle body help me?

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Old Feb 22, 2001 | 02:39 PM
  #1  
theformula's Avatar
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Bigger throttle body help me?

If so, which size?

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91 Formula
305 TPI 5speed
1LE/G92/WS6

Paxton SN92 polished kit, SLP airfoil, ported/polished plenum, March pulleys, Crane AFPR(43psi),Crane Gold 1.6rrs,MSD coil,MSD6AL,MSD boost-master,Holley 9mm wires,Ac delco R43ts plugs,custom chip,Ford SVO 24# injectors,Bosch O2sensor, Bosch in-line pump(w/stock pump), SLP 1 5/8" headers,SLP catback,short shifter,3:73s w/Auburn posi,170* t-stat,JET 195* fan switch, Macewen white face gauges, Autometer gauges, Zoom hi-performance clutch.
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Old Feb 22, 2001 | 03:20 PM
  #2  
jimbo's Avatar
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Posts: 202
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From: Melbourne Beach, Florida, USA
Car: 1991 Formula Firehawk (Clone)
Engine: 350 with Firehawk Package
Transmission: 700R4
...what do have on it now...a 48?
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Old Feb 22, 2001 | 03:49 PM
  #3  
Dan87IROC-Z's Avatar
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From: Fort Collins, Colorado
With that supercharger on there, I'd go with at 58mm or maybe even a mono-blade throttle body.

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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)

7.5" 10 Bolt with 3.42s soon to come!
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Old Feb 22, 2001 | 05:29 PM
  #4  
85ZZ4TPI's Avatar
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From: Minnesota
Contact TPIS.com they can straighten you out
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Old Feb 22, 2001 | 06:41 PM
  #5  
IROCZTWENTYGR8's Avatar
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From: In a mint Third Gen!
Car: Red 87 IROC-Z28 T-Top
Engine: 5.7 Tuned Port Injection
Transmission: 700R4 Auto
Axle/Gears: BW 9-Bolt 3.27
With the S/C I'd say 52mm.

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Looking For:

87 IROC-Z 350 TPI
84 TRANS AM 305 H.O.
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