'02 lq4 into '99 tahoe need help on fuel lines

[Bama2door]

I'm doing a 6.0 swap in my 99 OBS Tahoe and need some help. I am getting S&P to make me some fuel lines to go from the intake on the 6.0 to where we disconnected the factory lines from the 350 (which sit right around the lower firewall). There's only about a foot to a foot and a half of line I need, but S&P needs to know the size of the fuel lines and I told them to use stock GM fittings, anything else y'all can think of? I think I need to know the sizes of the stock 350 fittings and the size of the 6.0 fittings that are on the intake.

[RedHeartbeat]

stock GM size is 3/8 and 5/16" but if I were you I'd ask them to make them out of 1/2" and 3/8" or 7/16" instead of 3/8". 3/8" would be easiest to find fittings for. Go oversized if you plan on adding power adders in the future.

[350ss]

Both Earls and pure choice makes female metric o-ring to AN adapters that would allow you to adapt the '99 factory fuel lines.

The factory fuel lines are metric 14x1.5mm and 16x1.5mm if I remember correctly.

http://www.summitracing.com/parts/EAR-9894DBJERL/
http://www.summitracing.com/parts/EAR-9894DBHERL/

Then as redheartbeat said, the lq4 fuel rail lines are 3/8 and 5/16

http://www.summitracing.com/parts/RUS-640850/
http://www.summitracing.com/parts/RUS-640860/