Install floors before engine and transmission?

[House Money]

I know the manual has the engine/trans being installed prior to the floors getting installed, but is there a reason for this? It seems to me that it would be easier to drill and rivet them without the engine/trans in the way. At the very least I think it would make sense to install the lower floor pieces first. Any thoughts on this?

Gary

[Furrman]

leave the floor out until you have installed the exhaust system.

[wallace18]

leave the floor out until you have installed the exhaust system.

What he said. There is reasons for the order.

[House Money]

What he said. There is reasons for the order.

Thanks for the replies. Interesting that the manual has the exhaust being installed way after the floors! Of course yesterday I ripped out the power steering motor and shafts so I could run the front brake lines....

Gary

[House Money]

leave the floor out until you have installed the exhaust system.

So OK to fit and drill the floor pieces and then install after the exhaust?

Gary

[VIRGIN MIKE]

I installed floor / pan first, didn't cause any issues - no conflict with 347/tko crate engine install. just did exhaust sitting on jack stands
much easier than I expected; laid everything out first then my son rolled under the frame and bolted everything together as fast as I could hand him the parts