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85Z28 gets ls1 swap by tpi terror

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Old Aug 19, 2016 | 05:26 PM
  #1  
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Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
85Z28 gets ls1 swap by tpi terror

this summer i finished up a ls1 swap on this 85z. Ive done several ls swapped thirdgens with t56, and this was my first 4l60e so wiring was a bit more time consuming.

We ditched the 355 cammed. w/ carburetor / 700r4 and went with a 02 ls1 and 4l60e

Cam, supporting mods, a stall, racing inn. headers, and going with a nice exhaust set up. Has c5z brakes and suspension goodies.

interior we ditched the 3g interior and went with a 4g camaro dash, functional hvac for heater and 4g cluster all functional. tcc switch, hooked up . 3g shifterunder the 4g center console. parking neutral switch wired up !

4g fuel tank with aero pump n fuel access door, 4g fuel lines,

i always use spohn motor mounts and hawks double hump transmission member for optimum exhaust clearance. it looks like its going to be a tight fit on passenger side and driver side by the 4g ls1auto shifter selector. (needs to be bent for better clearance)

oil pan clearance was tight we did a notch on the original k member, used 4g fbody pan.

i have a total of 10 days minimum 6-10 hour working days. now we need a tune by ryne cms in murrieta and exhaust.

truck trans dipstick was a fail so ill be looking for a fbody dipstick .
the hawks tranny member needs a new hole slot to position the trans properly and centered.


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Last edited by TPI TERR; Aug 19, 2016 at 05:30 PM.
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Old Aug 19, 2016 | 05:27 PM
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: 85Z28 gets ls1 swap by tpi terror

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few others 3gs completed
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Old Aug 19, 2016 | 09:32 PM
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From: Long Island NY
Car: 84 Z28......99 TA
Engine: Lq9 6.0... Ls1
Transmission: 4L60E X's 2
Axle/Gears: 3.73 on both
Re: 85Z28 gets ls1 swap by tpi terror

Looks great. Yeah those long tubes make the rest of the exhaust a pain in the dick. I moved my o2's further down a bit to clear the trans shift bracket.
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Old Aug 22, 2016 | 10:01 AM
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From: Marietta, GA
Car: 92 Z28
Engine: LS1
Transmission: T56
Axle/Gears: 3.73 10 bolt
Re: 85Z28 gets ls1 swap by tpi terror

Lookin good dude
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Old Aug 22, 2016 | 01:07 PM
  #5  
TPI TERR's Avatar
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From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
Re: 85Z28 gets ls1 swap by tpi terror

Originally Posted by RockJay81
Looks great. Yeah those long tubes make the rest of the exhaust a pain in the dick. I moved my o2's further down a bit to clear the trans shift bracket.
yeah. welder should take care of that for us.
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Old Aug 22, 2016 | 03:04 PM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: 85Z28 gets ls1 swap by tpi terror

Its gona be a beast!
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Old Aug 22, 2016 | 05:40 PM
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From: WINDSOR, CO
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
Re: 85Z28 gets ls1 swap by tpi terror

Nice work buddy!
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Old Aug 24, 2016 | 05:24 PM
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Re: 85Z28 gets ls1 swap by tpi terror

Looks great!! Engine bay is clean looking. 10 days, nice. I'm learning, just get out there and start wrenching.
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