Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks - Page 3 - Chevelle Tech
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post #31 of 69 (permalink) Old Nov 3rd, 18, 2:23 PM Thread Starter
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

What year are you putting it in?
Quote:
Originally Posted by petey1549 View Post
I decided to try one of these tanks as well. It's a nice piece, but I'm finding that the fuel fitting area isn't recessed anywhere close to enough to let the tank fit up close to the floor. Even without the fuel lines connected the fittings are hitting the trunk floor long before the tank is fully raised. All the fancy features in the world are pretty much useless if the damn thing doesn't fit properly in the car. Looks like either fashioning some spacers for the tank to rest up against or beat a cavity in the front of my freshly painted trunk floor (the latter isn't really an option that's on the table).
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1969 Chevelle SS --- 468 FTI Level 4 TH400 AFR 290cc's
1997 S10 SS ---LQ9/4l65e
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post #32 of 69 (permalink) Old Nov 3rd, 18, 5:43 PM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

Putting it in a 70 Chevelle (or at least trying to). Looks like it's all coming down to about a 1/2 inch. No way to lower the fuel fittings on the tank and no way to raise that area of the floor pan, so it looks like the tank is gonna have to sit about a 1/2" low in the front on some urethane spacers. At least for a little evaluation and until I speak with the folks at Aeromotive on Monday.
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post #33 of 69 (permalink) Old Nov 3rd, 18, 7:43 PM Thread Starter
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

@petey1549 ,

Please let us know what they say.

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post #34 of 69 (permalink) Old Nov 3rd, 18, 8:24 PM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

I am going to try one of these. I have their Gen 1 nice but can see advantages of the Gen 2. They indicated on mine (1965 Chevelle) that the outlet was located in the front just like the factory. I can see from the above there is not a lot of room for the fittings. We shall see how far in the front mine is.
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post #35 of 69 (permalink) Old Nov 6th, 18, 6:01 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

I spoke with tech support at Aeromotive yesterday about the fuel fitting clearance issue I have. I'm not sure if I should call out anyone by name so I'll just say that the gentleman I spoke with was friendly and genuinely concerned about my issue. In the end, it was determined that no similar issues have been reported by other customers and the issue is likely unique to my project. As much as I'd like to say that's a canned response used for everyone, I do have a knack for encountering unique problems

All kidding aside, this tank seems like a nice piece so far. I'm sure if anyone else runs into any problems with one, the folks at Aeromotive will absolutely help resolve it.
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post #36 of 69 (permalink) Old Nov 6th, 18, 10:22 AM Thread Starter
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

@petey1549 , does your car have the original trunk pan?

1969 Chevelle SS --- 468 FTI Level 4 TH400 AFR 290cc's
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post #37 of 69 (permalink) Old Nov 6th, 18, 6:15 PM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

I called Aeromotive also concerning @petey1549 issues since I am preparing to install my tank within the next week. The tech indicated that they actually test fitted the tank to a 1970 Chevelle and had no problem with fitment. He did mention there was one call earlier inquiring about the same topic. Good question regarding the floor pan.
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post #38 of 69 (permalink) Old Nov 8th, 18, 10:13 AM
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Yes, all original trunk pan, braces, etc. In excellent condition as well so no warps, dents or other deviations.
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post #39 of 69 (permalink) Old Nov 8th, 18, 11:20 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

Are your body mount bushings collapsed?

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post #40 of 69 (permalink) Old Nov 9th, 18, 7:43 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

Since the tank fastens only to features of the trunk floor, body mount bushing condition is irrelevant to clearance between the tank/floor. That being said, all bushings are new. This car is a full restoration build. The only work required on features related to tank installation/trunk floor was new body mount cage nuts welded in to the trunk floor outer braces. The inner braces (which the tank actually rests against) were flawless.
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post #41 of 69 (permalink) Old Nov 9th, 18, 8:09 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

The tech at Aeromotive also let me know that the hat/fitting assembly on these tanks can be loosened and rotated up to +/-90deg. That may help some folks as the fittings; being splayed apart from each other, do come in contact with stamped features of the trunk floor that exist to add geometric rigidity to the floor and close the gap between the tank and floor in some areas. I'm going to look over my install and see if I can get any benefit from rotating the fitting assembly.
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post #42 of 69 (permalink) Old Nov 9th, 18, 8:16 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

I know the tank on the 1965 comes with a 1/16 of an inch cushion (like hard tar paper) piece that's goes along rail / top of gas tank there that prevents tank rattle. Not sure if had put that on, but maybe glue like 2 or 3 together so you get like another 1/8 - 3/16 more clearance. No sure how far off you are.
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post #43 of 69 (permalink) Old Nov 9th, 18, 8:32 AM Thread Starter
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

I hope they aren't leaving the R&D to the consumer.

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post #44 of 69 (permalink) Old Nov 9th, 18, 8:37 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

Yeah, I ended up cutting down some extra urethane body bushings to capture between the front of the tank and floor. I'm ok with this method as; like you say, it'll give some cushion to the tank. Needed 1/2" longer hangar bolts to get the straps installed. Checking to see if the exhaust will safely pass the front edges of the tank now. If so, it can live this way.
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post #45 of 69 (permalink) Old Nov 9th, 18, 11:49 AM
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Re: Aeromotive 18404 - Aeromotive Gen II Stealth Fuel Tanks

Quote:
Originally Posted by petey1549 View Post
Since the tank fastens only to features of the trunk floor, body mount bushing condition is irrelevant to clearance between the tank/floor.
Yeah, duh. I just had the tanks out of my C20 and the cab was really close to them until I replaced the cab mounts. Got my cars mixed up. Guess I can't offer any advice but I'll be watching for an update on your situation. I'd like to order one of these for my '69 but not if it's going to be a hassle.

70 Camino...Roller

69 Malibu Stock 307, Reverse Manual TH350, 4,500 Stall Edge Converter, 4.56 Spool 35 Spline 12 Bolt

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