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85 L69 in-tank pump?

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Old Mar 2, 2009 | 07:23 PM
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85 L69 in-tank pump?

I just got an 85 L69 5-speed IROC that has been sitting for over 5 years and is suffering from a full tank of old, dead gas. I got it started & it ran fine for 3-4 minutes, then died from fuel starvation. I remember reading that the L69s had an in-tank electric pump, does anyone have specific experience with this? I need to get it running well enough to drive a short distance & pull on to a trailer & I'm trying to get my ducks in a row!
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Old Mar 2, 2009 | 07:54 PM
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Re: 85 L69 in-tank pump?

Is there such thing as an 85 L69 in an F body? Thought they went to the TPI after 84?
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Old Mar 2, 2009 | 08:08 PM
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Re: 85 L69 in-tank pump?

85 was the last year for the L69, it was an IROC only deal, they didn't make many of them, I don't if GM put them in Firebirds in 85.
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Old Mar 2, 2009 | 08:26 PM
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From: Elizabethtown,Ky
Car: 1984 camaro z28
Engine: L69 H.O
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Re: 85 L69 in-tank pump?

Ive got an l69 in my 84 and i don't have any in tank fuel pump just the mechanical pump mounted to the side of the engine block
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Old Mar 2, 2009 | 08:33 PM
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Re: 85 L69 in-tank pump?

86 was actually the last year for the L69, though only 74 were produced. Check the following link for info on the in-tank pump:

https://www.thirdgen.org/forums/carb...h-o-vapor.html

JamesC

Last edited by JamesC; Mar 2, 2009 at 08:36 PM.
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Old Mar 2, 2009 | 08:34 PM
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From: Bertram (outside Austin), TX
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Re: 85 L69 in-tank pump?

Originally Posted by blackandgoldl69
.....i don't **think
** have any in tank fuel pump just the mechanical pump mounted to the side of the engine block
I would think the L69 woulda had an on-engine mechanical pump.

I notice your in Austin....You oughtta check us out locally at http://www.austinthirdgen.org

Last edited by Stephen; Mar 2, 2009 at 08:38 PM.
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Old Mar 2, 2009 | 08:38 PM
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Re: 85 L69 in-tank pump?

Ah yes, I remember seeing that in the white book- thanks for the correction- weren't most of the 86 L69s race cars? Has anyone ever seen a "civillian" one?
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Old Mar 2, 2009 | 08:40 PM
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I've heard that L69's had the in-tank electric and the engine-mounted mechanical, I've heard only engine-mounted mechanical until '84, I've heard only engine-mounted mechanical through '84 - basically, I've never gotten a clear story.

But, apparently, some L69's got the in-tank electric. May have been a dealer-installed option, or a vapor lock solution kit.
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Old Mar 2, 2009 | 08:46 PM
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From: Austin TX
Car: 82 Z28
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Re: 85 L69 in-tank pump?

Originally Posted by Stephen
I would think the L69 woulda had an on-engine mechanical pump.

I notice your in Austin....You oughtta check us out locally at http://www.austinthirdgen.org

You're right, the car does have a mechanical pump on the block, I think the L69s have both, I'm just trying to decide if I should bring an external fuel source to get the car moving. I have checked out austinthirdgen, my '82 is licenced and insured, I hope to bring it to an upcoming event.
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Old Mar 2, 2009 | 08:50 PM
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From: Bertram (outside Austin), TX
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Re: 85 L69 in-tank pump?

Originally Posted by daveb123
You're right, the car does have a mechanical pump on the block, I think the L69s have both, I'm just trying to decide if I should bring an external fuel source to get the car moving. I have checked out austinthirdgen, my '82 is licenced and insured, I hope to bring it to an upcoming event.
This weekend, we have having a burnout video day. at Thunderhill Raceway, down in Kyle. So we can "play" and the cops can't touch us!
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Old Mar 2, 2009 | 09:15 PM
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Re: 85 L69 in-tank pump?

Originally Posted by Stephen
This weekend, we have having a burnout video day. at Thunderhill Raceway, down in Kyle. So we can "play" and the cops can't touch us!
ARRGH! I'm working this Saturday! My 82 isn't quite stock, with the 3.42 first gear, it will light them up as long you hold your foot down!
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Old Mar 3, 2009 | 08:22 AM
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Re: 85 L69 in-tank pump?

Originally Posted by daveb123
You're right, the car does have a mechanical pump on the block, I think the L69s have both, I'm just trying to decide if I should bring an external fuel source to get the car moving. I have checked out austinthirdgen, my '82 is licenced and insured, I hope to bring it to an upcoming event.

Yes, my 84' L69 Notchback parts car has a mechanical fuel pump on the block, AND the electric fuel pump in the tank. Im not sure why this is tho?
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Old Mar 3, 2009 | 08:21 PM
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Car: '82 Recaro T/A, '71 Trans Am
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Re: 85 L69 in-tank pump?

Late '84-86 L69 got the in-tank electric pusher pump from the factory. '83 and early-'84 got a dealer installed in-tank pump setup if the owner experienced vapor lock problems.

How far do you have to go with the car? On my '84 T/A parts car all the lines are rotted out so I put the fuel pump feed hose on the nearby coolant recovery bottle and used that for a gas tank. I imagine you could fill it up with enough gas to go 10-15 miles.
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Old Mar 3, 2009 | 09:36 PM
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From: Austin TX
Car: 82 Z28
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Axle/Gears: 3.23
Re: 85 L69 in-tank pump?

Originally Posted by Dens71TA
Late '84-86 L69 got the in-tank electric pusher pump from the factory. '83 and early-'84 got a dealer installed in-tank pump setup if the owner experienced vapor lock problems.

How far do you have to go with the car? On my '84 T/A parts car all the lines are rotted out so I put the fuel pump feed hose on the nearby coolant recovery bottle and used that for a gas tank. I imagine you could fill it up with enough gas to go 10-15 miles.

That's a great idea! I had not thought of that! I was going to rig up a gallon gas can & hose, but the overflow bottle would be perfect. The car is sinking into the guy's backyard I got it from, I need to break it loose & drive it across the yard, around the house & out to the trailer and then back it off etc when we get to my place- 15-20 minutes of running time.
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Old Mar 3, 2009 | 10:07 PM
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Re: 85 L69 in-tank pump?

That is pretty much what I was doing with my parts car. The brake lines and rear control arm mount are also rusted away so that makes it extra fun.

Are you going to be parting the car out?
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