Thread: 94 grand prix 3.1 engine to 3.8 supercharged

what ever the junk yard or ebay wants. $500-5k

Did a swap from a 99 gtp to a 93 cutlass. Basically a drop in, we had to cut some of the firewall because we did headers. Also moved the upper motor mounts. The wiring harness was the most expensive thing to get done. Also need gtp axles to combine with your stock ones, gtp inners, stock outers, but use the gtp shaft for the passenger side. It would be wise to upgrade the fuel pump. You will also need power steering lines from a n/a 3.8l. There's more to it, but it really aint that bad.

Originally Posted by FoSHO99

Did a swap from a 99 gtp to a 93 cutlass. Basically a drop in, we had to cut some of the firewall because we did headers. Also moved the upper motor mounts. The wiring harness was the most expensive thing to get done. Also need gtp axles to combine with your stock ones, gtp inners, stock outers, but use the gtp shaft for the passenger side. It would be wise to upgrade the fuel pump. You will also need power steering lines from a n/a 3.8l. There's more to it, but it really aint that bad.

im curious.... did the subframes match up?

Originally Posted by iroc2

im curious.... did the subframes match up?

subframes don't match, but the motor and trans will bolt up fine.