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TH350 swap kit? (is this the right one)

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Old Nov 30, 2008 | 07:31 PM
  #1  
88onfire's Avatar
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From: Lee's Summit, MO
Car: '88 Firebird
Engine: 350 (340 Est. HP)
Transmission: Turbo 350 (1800 Stall Convertor)
Axle/Gears: 3.42 Posi/28 Spline/Alum Diff Cover
TH350 swap kit? (is this the right one)

Hey, A th350 will be going into my 88 firebird, along with a 350. I found this kit on summit that says it has the torque arm relocator, new crossmember, ect.. i was wondering if this was the real deal ( only a hundred bucks!?), or if i needed to check out spohn. thanks

the link:
http://store.summitracing.com/egnsea...00213&D=300213
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Old Nov 30, 2008 | 10:23 PM
  #2  
AlkyIROC's Avatar
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: TH350 swap kit? (is this the right one)

All that kit has is a relocation bracket for the tranny mount and a bolt on mount for the factory style torque arm. The TH350 mount sits about 2" forward from where the 700R4 mount is.

Buying a Spohn kit includes a new tubular, adjustable torque arm, a new crossmember with integral driveshaft loop and a torque arm mount on the crossmember to move it off the transmission.

You need a long tailshaft TH350 to use the 700R4's driveshaft. If you have a short tailshaft TH350, you'll need the longer driveshaft from a 82-83 third gen that came with the 200c 3 speed automatic.
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Old Nov 30, 2008 | 11:21 PM
  #3  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I happen to know someone who has a crossmember and driveshaft for the shorter transmission. . .
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Old Dec 1, 2008 | 04:05 PM
  #4  
88onfire's Avatar
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Joined: Jun 2008
Posts: 30
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From: Lee's Summit, MO
Car: '88 Firebird
Engine: 350 (340 Est. HP)
Transmission: Turbo 350 (1800 Stall Convertor)
Axle/Gears: 3.42 Posi/28 Spline/Alum Diff Cover
Re: TH350 swap kit? (is this the right one)

so, even though not the greatest,for now it'll work? (i plan on the aftermarket in the future) I'm actuall replacing the 2.8/t-5. I would do a t-56 swap in the future, but we have the th350 sittin around, and it is better motivation for my grad present due to the fact it's cheaper(not having to drop 1200-1500 for a t-56).

five7kid: i might hit you up on that......i'm not sure how my dad wants to go about it yet....
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Old Aug 14, 2009 | 08:05 AM
  #5  
TA55's Avatar
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From: Texas
Car: '92 RS
Re: TH350 swap kit? (is this the right one)

Do you still have that cross member and driveshaft for the shorty 6" tailshaft?
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