85Z28 gets ls1 swap by tpi terror
Thread Starter
On Probation
iTrader: (9)
Joined: Feb 2005
Posts: 2,042
Likes: 2
From: So Cal
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.





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.





Last edited by TPI TERR; Aug 19, 2016 at 05:30 PM.
Joined: Jul 2008
Posts: 266
Likes: 2
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.
Thread Starter
On Probation
iTrader: (9)
Joined: Feb 2005
Posts: 2,042
Likes: 2
From: So Cal
Car: 87 IROC-Z
Engine: LsX
Transmission: MN12 6speed
Axle/Gears: 3:42
COTM Editor
iTrader: (11)
Joined: Mar 2006
Posts: 4,098
Likes: 13
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!











