97 Mark 8 fuel tank in a 97 tbird - TCCoA Forums
 
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post #1 of 10 (permalink) Old 07-11-2016, 07:05 AM Thread Starter
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97 Mark 8 fuel tank in a 97 tbird

At the local salvage yard is a 1997 mark 8.
Will the tank work and fit into a 1997 tbird?

Last edited by thatglockguy; 07-11-2016 at 07:06 AM. Reason: wrong year mark 8
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post #2 of 10 (permalink) Old 07-11-2016, 07:41 AM
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Yes it will fit, if you get the exhaust off the car too, since the exhaust path is slightly different on the MarkVIII, and your tbird exhaust would end up hitting the MarkVIII tank. There is really no benefit to the MarkVIII tank though, so unless there is something wrong with yours, I would leave it alone.

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post #3 of 10 (permalink) Old 07-11-2016, 07:45 AM Thread Starter
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Yes mine has a patched hole in it. lol
I am installing a 2.5" dual exhaust in the tbird. If I got the 97 fuel tank would it clear?
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post #4 of 10 (permalink) Old 07-11-2016, 09:49 AM
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No, the mandrel kit doesn't fit around it right.

-Matt
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post #5 of 10 (permalink) Old 07-11-2016, 12:42 PM
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You could get the mark tank and just get the mandrel kit for a mark as well...

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post #6 of 10 (permalink) Old 07-11-2016, 01:51 PM
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Quote:
Originally Posted by Thunderstruck95 View Post
You could get the mark tank and just get the mandrel kit for a mark as well...
Here's the thing, Mandrel's website lists their system for 93-98 Mark VIIIs, which is a problem since the 93-96 Marks use the same tank as the 92-97 Tbirds, while the 97-98 Marks switched to steel tanks with slightly different routing.

-Matt
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post #7 of 10 (permalink) Old 07-11-2016, 06:29 PM Thread Starter
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Ok, so stay with the plastic tbird tank and forget the mark.
Thanks guys
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post #8 of 10 (permalink) Old 07-13-2016, 12:17 PM
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Quote:
Originally Posted by XR7-4.6 View Post
Here's the thing, Mandrel's website lists their system for 93-98 Mark VIIIs, which is a problem since the 93-96 Marks use the same tank as the 92-97 Tbirds, while the 97-98 Marks switched to steel tanks with slightly different routing.
Well, this is news to me and possibly a problem. I grabbed a set of dual pipes from a 97-98 LSC a while back and plan to use them on my bird. Are they 'close enough' or it just won't work? I'll have to get them under the car and see how it lays out. This sucks because I'm about ready to install them. Now I may have to buy more parts.

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post #9 of 10 (permalink) Old 07-13-2016, 02:06 PM
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Putting the stock MarkVIII dual pipes in with a tbird gas tank will be fine. The difference is where the pipes turn out of the tunnel toward the driver's side the MarkVIII pipes turn a little earlier to give it a shallower bend. The pipes may hit the bottom part of the heat shield, but nothing you can't fix with some tweaking and bending of the heat shield. In the case of trying to put the mandrelexhaustsystems.com pipes on the MarkVIII though, the pipes hit the tank.

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post #10 of 10 (permalink) Old 07-13-2016, 02:26 PM
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Yep, I think Dan is running LSC pipes as well. The routing is basically the same but the jigs used to make the mandrel kits are based around the plastic tank to tightly hug it with a 2.5" pipe diameter, and that's the problem with the Mark VIII tank which has tighter transitions than the Tbird/Gen I tanks.

Here's how DLF installed mandrels on his Mark - you can see the extra seams where it had to be cut and modified for clearance around the steel tank.

-Matt
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