how to swap engines from v6 to v8
how to swap engines from v6 to v8
hello kinda new here wanna know how to do an engine swap for my 90 camaro rs 3.1l v6 and where i can find a good 350 or maybe a 400 small block. really want my car to sound really good thanks in advance
Re: how to swap engines from v6 to v8
Im looking for the same info i have all wiring diagrams ihave the 350 and th350 trans i know i need the driveline, crossmember, fuel regulator with return, radiator, and i know how to wire the 350 i just have no idea what to save from the car and not im just trying to figure out. If i can remove the engine harness and ecu or what and if so will all my dash and lights and radio still work and whats better tap into the stock guages or just run aftermarket
Joined: Jul 2007
Posts: 358
Likes: 2
From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Supreme Member




Joined: Oct 2004
Posts: 4,527
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: how to swap engines from v6 to v8
No one ever reads the stickies
Supreme Member




Joined: Oct 2004
Posts: 4,527
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: how to swap engines from v6 to v8
In your wiring diagrams do the sensors for your gauges go through the ecu or are they sensor straight to the gauge pod?
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Re: how to swap engines from v6 to v8
Well the fuel pump goes through the ecm and speed scencor too as for the rest i dont know thats why im confused im going to run a hei dist and internal reg alt i know the tac will be about 10% off and i can buy a conversion for speedo cable to electric but it runs through the ecm? But if i run all aftermarket guages im just wondering if all my lights and radio and heater and dash will work and what is this passanger side harness i can remove and do i hard wire the fuel pump direct to the ignition or through the relay i have a 91 rs 3.1 v6 mpi
Supreme Member




Joined: Oct 2004
Posts: 4,527
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: how to swap engines from v6 to v8
I would probably save as much harness as you can to avoid headaches later. I know my 84 the temp, and oil are just sensor to gauge. I think for electric speedo there is just a sender then a buffer and finally the gauges. What is your final V8 plan, TPI, TBI, carb?
Supreme Member




Joined: Oct 2004
Posts: 4,527
Likes: 240
From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: how to swap engines from v6 to v8
Check the carb section there are some awesome stickies that may help such as this one
https://www.thirdgen.org/forums/carb...um-please.html
This might help with your fuel questions
https://www.thirdgen.org/forums/carb...nk-pickup.html
https://www.thirdgen.org/forums/carb...um-please.html
This might help with your fuel questions
https://www.thirdgen.org/forums/carb...nk-pickup.html
Joined: Jul 2007
Posts: 358
Likes: 2
From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: how to swap engines from v6 to v8
as far as I know, the guages have their own sensors. they are seperate from the computer. in the LT1/LS1 swap area, there are a few wiring diagrams for the 85/86. it is in the common LT1 swap questions.
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