LA95GT

I have a set of BBK long tubes for my sn95. I was wondering if anyone knew the size of fittings I`ll need to plug and cap the holes so I dont have to weld them.


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nitrous_bob

i wanna say 5/8"

not 100% though

LA95GT

is that for both O2 sensor and EGR? also what thread type? LOL go to the parts store an ask ......"Well sir I`m sorry but its not in the computer". Looks kinda like a hydraulic fitting or a tubing.

ZachW04Stang

The holes in the back of the cylinder heads is 5/8.

LA95GT

Holes in the back of the cylinder head? I`m talking about the female threaded hole at the collector on the driver side and the male threaded end thats on the header tube thats in the engine compartment. Sorry if I`m missing something

nitrous_bob

pipe thread is fine for the o2 bungs, the thermactor holes are what he's talking about on the back of the heads, you need to plug them when you go o/r exhaust and ditch the smog

i think the nut that goes on the collector studs is 9/16" but that is fine on that side and pipe thread going into the collector. the old ones should work

are there no studs on it ???

LA95GT

whatever thats needs to be plugged on back of the head must already be plugged. The car was halfway converted to carb and o/r when i bought so its been a learning experience so far. Sorry about the questions that dont make any sense or details that dont add up. Thanks for all the help throughout that last couple of months. So regular pipe thread for the O2 and then 9/16 tubing cap for the end on the driver side header tube.

LA95GT

It was a 5/8 flared tubing cap