Quick Question, Fuel rail fitting size

Reply Subscribe

Thread Tools

Search this Thread

Jun 14, 2002 | 12:32 PM

89 Iroc Z

Thread Starter

Supreme Member

Joined: Aug 2001

Posts: 2,136

Likes: 2

From: Costal Alabama

Car: 1989 Iroc-Z

Engine: 350, ZZ4 equivalent

Transmission: Pro-Built Road Race 700R4

Axle/Gears: 3.23 Dana 44

Quick Question, Fuel rail fitting size

Quick Question, What size is the fuel pressure test fitting on the fuel rail, -4n?? Also if you unscrew the fitting from the fuel rail what is the size of the treads in the fuel rail?

Jun 15, 2002 | 12:39 AM

89ProchargedROC

Supreme Member

Joined: Apr 2000

Posts: 1,711

Likes: 0

From: chi-town

the fitting is -4 AN

not sure on the threads......you will go crazy trying to find them though

if you need that port for something, just unscrew the valve in the tester