454 Vortec Fuel Rail fittings: UPDATE

[wheels87k5]

Does anyone know what the sizes are for the 454 Vortec fuel rail fittings? I think they are M16 and M14 but not sure. I'm wanting to use adapters to change to the 6AN fittings.

Also, what are the sizes for the 87 TBI hard line to TBI? Possibly the same M16 and M14?

Not asking for a friend.

 

[Wes Harden]

Definitely m16 oring on the big size I just converted a tbi fuel filter to 6an

 

[wheels87k5]

That's what I was thinking. And I bet the smaller is M14. Now my main concern it the sizes for the 454 fuel rail. Still researching but not much luck.

 

[beags86]

Seems to me that @Larry would be the guy to ask.

 

[Larry]

I'm not exactly sure myself but I would also suspect they are M14 & M16

 

[wheels87k5]

Update on parts and sizes.

For the TBI hard line.....Russell Part # 640830 M16 x 1.5 Female O-Ring to 6AN Flare.......and Russell Part # 640820 M14 x 1.5 Female O-Ring to 6AN Flare

For the 454 Vortec Rail.....Russell Part # 648060 M16 x 1.5 to 6AN Flare......and Russell Part # 648070 M14 x 1.5 to 6AN Flare