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My 89 formula 350 ASC vert

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Old 01-26-2023, 01:09 PM
  #151  
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Re: My 89 formula 350 ASC vert

Hey Tony.

I had planned on Alston "inner" SFCs for my car (T-top). Just curious what these DID and DID NOT do for you compared to your hopes and expectations (understanding that this is a convertible, which adds some additional challenges).
Old 01-26-2023, 03:57 PM
  #152  
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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: My 89 formula 350 ASC vert

I think they were Alston style inner that i welded on. they did help a little, maybe i had higher expectations that they would work as well as the outters i liked to use back in the day.
Old 01-26-2023, 06:56 PM
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Car: 1989 IROC-Z 305 LB9 AT Convertible
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Re: My 89 formula 350 ASC vert

Originally Posted by TTOP350
I think they were Alston style inner that i welded on. they did help a little, maybe i had higher expectations that they would work as well as the outters i liked to use back in the day.

Spohn make outers specifically for the Verts. Some on TGO have used both. I bet that would really get the Unibody closer to modern rigidity!
Old 11-25-2023, 11:32 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: My 89 formula 350 ASC vert





Haven't had a lot of time to drive it this year, plus the old cats rattling and the weird front suspension pop and clunk when turning have really kept me out of it. Thanks to "gotopless", the
"new" cats came the otherday, so there's 1 fix. Have bilstein struts for the front and new frontend rebuild parts, now i just need the time!
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Old 11-26-2023, 02:59 AM
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Re: My 89 formula 350 ASC vert

Nice looking Dual Cat setup, TTOP350 ! What brand? :Like N10 or even better?
Old 11-26-2023, 03:09 AM
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Car: 89 IROC/89 Vert/87 Vert/89 GTA Vert
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Re: My 89 formula 350 ASC vert

DANG, those are pretty. Nice score.
Originally Posted by TTOP350




Haven't had a lot of time to drive it this year, plus the old cats rattling and the weird front suspension pop and clunk when turning have really kept me out of it. Thanks to "gotopless", the
"new" cats came the otherday, so there's 1 fix. Have bilstein struts for the front and new frontend rebuild parts, now i just need the time!
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Old 11-26-2023, 07:03 AM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: My 89 formula 350 ASC vert

Originally Posted by mikeceli
Nice looking Dual Cat setup, TTOP350 ! What brand? :Like N10 or even better?
They are the original AC brand GM used for RPO code N10, but since these don't have the after cats Y pipe part, they are probably over the counter replacements or even maybe for the ZZ crate motor kit for Fbody.
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Old 11-26-2023, 10:16 AM
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Re: My 89 formula 350 ASC vert

Originally Posted by TTOP350
They are the original AC brand GM used for RPO code N10, but since these don't have the after cats Y pipe part, they are probably over the counter replacements or even maybe for the ZZ crate motor kit for Fbody.

Thanks!
Old 02-09-2024, 06:16 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Re: My 89 formula 350 ASC vert


Should i swap it? 🤔
Old 02-09-2024, 08:19 PM
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Re: My 89 formula 350 ASC vert

Have have a LT5 engine laying around?
Old 02-09-2024, 09:08 PM
  #161  
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: My 89 formula 350 ASC vert

Originally Posted by Airwolfe
Have have a LT5 engine laying around?
I certainly could!
Old 02-11-2024, 06:02 PM
  #162  
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Re: My 89 formula 350 ASC vert

the 90's LT5 is a wonderful engine in many respects including its looks... i have a ~12K mile '90 ZR-1 and it is quite nice... the engine can have some quirks with the complexity of the injectors, induction system control, starter, etc... also the ECMs are reliable and your typical chip burning, but spare ECMs are pricey

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Old 05-01-2024, 08:46 AM
  #163  
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Car: 1989-92 FORMULA350 305 92 Hawkclone
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Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: My 89 formula 350 ASC vert




When you find a nos bumper without front plate holes drilled, you buy it.
Pretty nice surprise to find 2 more dirty but nos parts inside the bumper cover.. score
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Old 05-01-2024, 09:07 AM
  #164  
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Re: My 89 formula 350 ASC vert

Thats a hell of a score! Getting extra nuggest at Mcdonalds
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