I am swapping a plastic 99-02 LS1 tank into my 88. I've been reading through all the threads and my favorite method was five7kid's hard lines. The quick disconnect to AN adapters are easy to find as their part numbers are all over the place. However, the thing I am struggling with is the AN to hard-line adapters. Looking on Summit's website most of them don't state a maximum pressure, just "low pressure". Others state 50 psi max.

Here is one that states 50 psi:
http://www.summitracing.com/parts/ea...6erl/overview/

and here is one that doesn't state anything:
http://www.summitracing.com/parts/su...075b/overview/

I know in some worlds 58 psi is low pressure, but both in the descriptions state for "low pressure" use.

Anyone have any suggestions on exactly what hard-line to AN adapter to use?

Thanks,
Douglas

 

Use steel line, flare the end of the tube with a 37 degree cone, and use -6 tube nuts and sleeves.

http://www.russellperformance.com/mc...ngs/misc.shtml

Another option is to buy a crimper for plastic line and build your own OE style lines like 4th gen but fitted to your car.

 

Ok, so then for the other end would it makes sense to get a AN to M16-1.50 adapter to be able to hook it to the stock fuel filter?

What about for the return line, since that is 5/16 on the car? I think it's size is 14mm. They do make a 14mm to -6 adapter, too.

Basically it would go:
Feed: Quick disconnect to -6 AN adapter -> -6 AN tube nut and sleeve -> 3/8" tube -> -6 AN tube nut and sleeve -> -6 to M16-1.50 adapter -> fuel filter
Return: Quick disconnect to -6 AN adapter -> -6 AN tube nut and sleeve -> 3/8" tube -> -6 AN tube nut and sleeve -> -6 to M14-1.50 adapter -> fuel line

To note, I am not doing a LS1 swap, this is going to stock TPI, so I need to keep the factory return line. A bad stereo install left me in need of a new fuel tank and it was either 189 for a questionable fitting new replacement, a questionable used tank (and probably without a sump) or get a LS1 tank and make it work but get all the benefits of the new style tank/fuel pump.