Trap door lid size?

[Revver]

I'm going to do at trap door for the fuel pump on a '94 Firebird that is not at my house. I want to purchase a piece of sheet metal to cover the hole before I go to the car's location.

What size should the lid be?

[FTA1995]

I cut about an 8 or 9 inch square hole, worked excellent, but this was with the fuel tank dropped down onto the rear axle for some added clearance.
Be careful if you aren't dropping the tank at all so as to not accidentally cut into it, it and all of the important components on the fuel tank are less than an inch from the rear deck.

[Revver]

I'm not cutting a square hole. I'll be cutting a suggested rectangle that provides 1" clearance from the left groove, 1-9/16" from the right groove, 1-1/2" from the the edge towards the front of the car & 9/16" from the rear per http://www.worldisround.com/articles/12533/photo14.html

No dropping of the tank as I'll be using a Dremel. I'm aware of the clearance issues.

[Joe 1320]

I'm going to do at trap door for the fuel pump on a '94 Firebird that is not at my house. I want to purchase a piece of sheet metal to cover the hole before I go to the car's location.

What size should the lid be?

larger than the hole you cut.

Sorry, couldn't resist. Go by the photo in the link inthe previous post. The cut is much quicker with a sheet metal cutting tool and an air hammer. Drill 4 holes and simply connect the dots. Takes less than 2 minutes vs an incredible amount of grinding with a dremel.

[Revver]

No air power or air powered cutting tool at the car's location. Just electricity.

Can someone provide the length & width measurements for the trap door lid? If so, what are they?

If not, don't reply.

[Injuneer]

http://www.cardomain.com/ride/348183/9

[FTA1995]

http://www.cardomain.com/ride/348183/9

Almost exactly what I did, minus bending back the forward metal, but again i was able to do it a little cleaner since the tank was dropped a bit.

[Revver]

Scaling the photo, the lid size might be 9" x 12" or slightly smaller.

[Joe 1320]

If mine weren't at the paint shop, I would measure it. Nothing wrong with larger. In fact.... the larger, the better as the reason GM chose not to put in a hatch was to maintain a rear firewall in case of fire. Nothing wrong with putting a hatch in place that has a larger overlap.

[Injuneer]

There's some good photos, stories, and maybe even some dimensions in this thread at CamaroZ28.com.

http://www.camaroz28.com/forums/showthread.php?t=619463