58mm throttle body question
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Junior Member
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Joined: Apr 2013
Posts: 64
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From: albany ny
Car: 1989 formula firebird
Engine: 305 tpi
Transmission: m5
Axle/Gears: 3.45
58mm throttle body question
Has anyone ever run a 58mm throttle body on a stock engine? If so how did it work for you. thanks for any info
Supreme Member
Joined: Aug 2003
Posts: 1,644
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From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Joined: Apr 2005
Posts: 7,736
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Joined: Oct 2001
Posts: 12,215
Likes: 1,140
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 58mm throttle body question
I have taken sooo many 58mm Tbodys off of cars with the plenum opening behind them not even port matched.....
Everyone is correct, don't waste your coin till your making big power.
Everyone is correct, don't waste your coin till your making big power.
Joined: Dec 2004
Posts: 16,751
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 58mm throttle body question
Supreme Member
Joined: Aug 2003
Posts: 1,644
Likes: 4
From: Long Island New York
Car: 89 Formula 350
Engine: Forged 385 H/C/I
Transmission: 700R4-4300 Stall-lockup
Axle/Gears: BW 9 Bolt 3:70
Re: 58mm throttle body question
I'm sure another guy with a 305 will buy it soon.
Supreme Member
Joined: Dec 2004
Posts: 1,204
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From: chicago IL
Car: 91 formula
Engine: 350 tuned port. bolt ons
Transmission: 700r4
Axle/Gears: 3.73
Re: 58mm throttle body question
I bought a 52mm only because my last T-body died. but yea I would have sticked with my stock one if it was alive and well.
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