Join Date: Jan 2002
Location: Calgary, Canada
I usually reuse the original little tube extensions. If you soak them down with WD40 or something first, and then sand the carbon off with scotchbrite they will usually come out. They are still availiable from GM, but they are expensive about $9 each ( canadian ).
So the headers do not have the little lip the extensions sit against?, and then the smog tubes are installed on top of them?
I also usually cut them down a tad to say about .500 long, it seems to help the backfiring situation on older A.I.R setups.
2002 Jerry Bickle Cavalier, 446" Small Block, Brodix Canted Valve, lenco 5 speed, 7.54 @ 180. mph,1.06 60', 2235 lbs for 2014. GM Canada Docs, Highly Optioned 69 RSZ28 , Hugger Orange, White Stripes, 42,000 mile survivor, owned since 1973.