63 MM Throttle Bodies - ZR-1 Net Registry Forums

LGAFF · 06-28-2021

I have three throttle bodies and enough blades to do all three to 63MM... looking at interest. I was thinking $700 outright or $400 with your core.

Let me know

efnfast · 06-28-2021

Expected gains Lee?
I'm fully ported with cams.

LGAFF · 06-28-2021

Probably 8-12 HP and better throttle response... most of the big builders did them back in the day Rippie, Lingenfelter I believe.. others might chime in

XfireZ51 · 06-28-2021

Quote:

Originally Posted by efnfast

Expected gains Lee?
I'm fully ported with cams.

I?m have been using a 63mm TB for quite some time. Mods include Pete?s Stage 2 cams w full porting, headers, and my tune.

rush91 · 06-29-2021

I would be interested, would it be ok to do on an all stock motor? Or not worth it unless upgrades were done?

LGAFF · 06-29-2021

You would need mods to take advantage; need to match the plenum openings to 63mm

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scottskill · 06-29-2021

What is the stock plenum diameter?

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LGAFF · 06-29-2021

TB opening is around 58

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mhobtr · 07-01-2021

Does the intake horn have to be modified as well?

LGAFF · 07-01-2021

Yes the air horn mist be matched

06-28-2021	#1
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	63 MM Throttle Bodies I have three throttle bodies and enough blades to do all three to 63MM... looking at interest. I was thinking $700 outright or $400 with your core. Let me know __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-28-2021	#2
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,579	Re: 63 MM Throttle Bodies Expected gains Lee? I'm fully ported with cams.

06-28-2021	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 63 MM Throttle Bodies Probably 8-12 HP and better throttle response... most of the big builders did them back in the day Rippie, Lingenfelter I believe.. others might chime in __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-29-2021	#5
rush91 Join Date: Feb 2016 Location: Carterville Illinois Posts: 854	Re: 63 MM Throttle Bodies I would be interested, would it be ok to do on an all stock motor? Or not worth it unless upgrades were done?

06-29-2021	#6
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 63 MM Throttle Bodies You would need mods to take advantage; need to match the plenum openings to 63mm Sent from my iPhone using ZR-1 Net Registry __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

06-29-2021	#7
scottskill Join Date: Aug 2014 Location: Maple Park, Il. Posts: 54	Re: 63 MM Throttle Bodies What is the stock plenum diameter? Sent from my SM-G781U using ZR-1 Net Registry mobile app

06-29-2021	#8
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 63 MM Throttle Bodies TB opening is around 58 Sent from my iPhone using ZR-1 Net Registry __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

07-01-2021	#9
mhobtr Join Date: Apr 2016 Location: Birmingham, Alabama Posts: 60	Re: 63 MM Throttle Bodies Does the intake horn have to be modified as well?

07-01-2021	#10
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: 63 MM Throttle Bodies Yes the air horn mist be matched __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359