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Longhorn Man · 02-02-2007, 09:48 PM

my longhorn had a Pontiac 350 in it when i got it, get some engine stands from a 73 - 87 2 wheel drive truck, that's the main part of the swap.
you'll need to re-route the fuel line, either run a new line on the other side of the frame, or just run it across the front cross member. Doing this can actually help cool the fuel
you'll want to locate a battery tray from a truck that has the Aux battery... this'll place it on the drivers side, like the pontiac starter. If you can't locate one, you could always get a much longer cable... go up a size or two due to the added length.
A BOP tranny, or adapter plate will be needed.

I would bolt the tranny in, acording to the shifter mounting brackets and stuff, then hang the engine in the frame rails, bolt the tranny in with 2 bolts, then install the motor mounts on the engine. (this is all much easier with the front clip removed) Now, you'll see where you need to install the engine stands. Some drilling may be needed. Mark the frame, remove the engine, and drill your holes.
After that, it's pretty much a nuts and bolts operation. Mine had no hammering done on the firewall, no cutting on anything.... nuts and bolts and a couple holes drilled.

02-02-2007, 09:48 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: pontiac 455? my longhorn had a Pontiac 350 in it when i got it, get some engine stands from a 73 - 87 2 wheel drive truck, that's the main part of the swap. you'll need to re-route the fuel line, either run a new line on the other side of the frame, or just run it across the front cross member. Doing this can actually help cool the fuel you'll want to locate a battery tray from a truck that has the Aux battery... this'll place it on the drivers side, like the pontiac starter. If you can't locate one, you could always get a much longer cable... go up a size or two due to the added length. A BOP tranny, or adapter plate will be needed. I would bolt the tranny in, acording to the shifter mounting brackets and stuff, then hang the engine in the frame rails, bolt the tranny in with 2 bolts, then install the motor mounts on the engine. (this is all much easier with the front clip removed) Now, you'll see where you need to install the engine stands. Some drilling may be needed. Mark the frame, remove the engine, and drill your holes. After that, it's pretty much a nuts and bolts operation. Mine had no hammering done on the firewall, no cutting on anything.... nuts and bolts and a couple holes drilled.