Spectra Fuel Tanks....

[CarlC]

Pics would be great.

[BonzoHansen]

There are two 70-73 tanks, one with emmissions, one without, and they only go to 73 for efi tanks

Correct. I discount that for swaps, lol.

[stealth71]

I think this is an A-Body tank, but you get the idea. Pictures from the other thread.

[andrewb70]

Nice. Does anyone know what the pump output is like?

Andrew

[mhotel1]

Mine just came in last night from Rockauto....looks great..made in Canada...
I read the pump is stock capacity and Gm part number that comes in Tahoe/Suburban/Trucks..all though cannot remember where

[mhotel1]

aw here it was

http://ls1tech.com/forums/conversion...ml#post9839849

[CarlC]

So is that just a small sump on the bottom of the tank? That might work for straight and normal driving but it won't keep the pump submerged if cornering hard. Current OE setups use a venturi pump and bucket reservoir to overcome low-fuel cornering starvation problems.

[MuscleRodz]

So is that just a small sump on the bottom of the tank? That might work for straight and normal driving but it won't keep the pump submerged if cornering hard. Current OE setups use a venturi pump and bucket reservoir to overcome low-fuel cornering starvation problems.

nope, it is a bucket reservoir, pic is a little decieving. Depending on the tank, 5"-6" tall, about 8" square. Pump is from a late model Chevy truck, I don't remember which one right now. I have a tank on its way to me now. I could give some better pics of the well with dimensions once it arrives.

[Rag-Rat]

I need some persuading to talk me into one of these over a Rick's. I am going EFI and at first I wanted a stock look and did not know about these tanks. So I researched the Rick's Stainless tanks and like the way they look on cars. Does one have a benefit over the other (other than price).

[CarlC]

Thanks Mike. This has the makings of a great setup.

[MuscleRodz]

I need some persuading to talk me into one of these over a Rick's. I am going EFI and at first I wanted a stock look and did not know about these tanks. So I researched the Rick's Stainless tanks and like the way they look on cars. Does one have a benefit over the other (other than price).

Rick's tanks are great tanks. Unless you are mini-tubbing or need wild HP fuel requirements, or want stainless, no need to go to the extra expense.

[Steve1968LS2]

Alright....about a few months ago I heard a rumor that there was a company called Spectra that builds aftermarket fuel tanks with built-in fuel pumps specifically for LSX conversions into classic cars for around $600-$700 a pop.

What I want to know is; how do I contact them? Anyone have a website URL? Anyone have one of these tanks? And lastly...is there any truth to all this?

Thank you gentlemen.

Mine just showed up today.. GM32AFI for the Track Rat project. Looks good so far.

[Steve1968LS2]

Thanks Mike. This has the makings of a great setup.

Behold the man that turned me onto these... lol

[Steve1968LS2]

I do believe this is the pump capacity:

The tank comes with baffling and sump to stop fuel slosh and prepped for the EFI and features an in tank electric fuel pump that produces 85-115 PSI at 50-60 gallons per hour. This is the perfect tank for a LS conversion and keeps the original look of the factory tank.

Pump is the same as AC Delco EP381
with a 3 1/8" in diameter.

So, would this support your typical LS engine (ie, less than 500hp)?

Also, I'm going to pull it apart to see if a larger pump can be used.

It was just over $450... Add in the 'Vette regulator/filter (PN GF822) and you have a cost effective efi fuel system.

[MuscleRodz]

You won't be disappointed Steve. They are the best efi tank solution if you have the room for a stock tank

[BonzoHansen]

Mine just showed up today.. GM32AFI for the Track Rat project. Looks good so far.

Cool, can't wait to see it.

[Steve1968LS2]

You won't be disappointed Steve. They are the best efi tank solution if you have the room for a stock tank

I did some noodling and it seems like it would be good up to just over 500hp with the included pump.

Anyone want to double check my calculations?

[CarlC]

That pump is likely a 190LPH. 50GPH = 190LPH.

If so, no problem for 500HP. 600 would be the upper limit. Magnuson recommended a 190LPH for mine.

From the Holley site:

HP/2 = # of fuel

50 gal * 6#/gal = 300#

300 = HP/2, HP = 600

This is likely pretty conservative.

Looking closer at the above pics, is that a hole in the bottom of the sump? Is that how the sump fills? Does the pump filter cover this hole so that it acts as a one-way valve? Slurping up the fuel from the bottom of the tank through the hole?

[MuscleRodz]

I did some noodling and it seems like it would be good up to just over 500hp with the included pump.

Anyone want to double check my calculations?

You are correct, should handle most any stock LSx. LS7 may be the exception. If needed you could get a pump upgrade from someone like Racetronix good up to around 650hp

[MuscleRodz]

That pump is likely a 190LPH. 50GPH = 190LPH.

If so, no problem for 500HP. 600 would be the upper limit. Magnuson recommended a 190LPH for mine.

From the Holley site:

HP/2 = # of fuel

50 gal * 6#/gal = 300#

300 = HP/2, HP = 600

This is likely pretty conservative.

Looking closer at the above pics, is that a hole in the bottom of the sump? Is that how the sump fills? Does the pump filter cover this hole so that it acts as a one-way valve? Slurping up the fuel from the bottom of the tank through the hole?

The hole is how the tank self levels when not in use. The return line pumps unused fuel back into the well, and forces the excess fuel to run over the top of the well. No chance of starving the pump unless you run out of fuel. When you shut the car down, if the fuel in the well is higher than the tank, it will gradually self level with the rest of the tank.