no longer need
09-13-2016, 09:53 PM
#1
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Join Date: Jul 2016
Location: columbia tn
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Car: 91 GTA
Engine: 350
Transmission: 4 speed auto
Axle/Gears: 3.23 posi
no longer need
thanks for the info
Last edited by nzwcpn; 09-11-2017 at 04:49 PM.
09-14-2016, 05:48 AM
#2
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Location: Il
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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: tri-y header clarification for 91 GTA
I have only seen 1 92 firehawk with 1 3/4 tri Y headers (jet hot coated except the air tubes) so I know they were made but since no real records exist on what went where and when, it would be pure speculation.
09-14-2016, 05:11 PM
#5
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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: tri-y header clarification for 91 GTA
Put some dial calipers on the od of the outside of the header strait section.'
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09-18-2016, 06:47 AM
#19
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Join Date: Oct 2001
Location: Il
Posts: 11,896
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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: tri-y header clarification for 91 GTA
Ted, those are SLP 4n2-1 headers.
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