Cam Swap
Gary Derian
gderian at oh.verio.com
Fri Jul 2 00:15:25 GMT 1999
I can get my cars to show less than 100 ppm and 1% CO with a carb and no
catalyst, no air pump, no nothing. I have to clamp a cat heat shield to the
exhaust pipe so it looks like there is a cat. You should have no problem
with idle and 2200 rpm. Raise the idle speed for the test if you have to.
I guess that takes a chip.
Gary Derian <gderian at oh.verio.com>
> Delta Camshafts out of Tacoma WA did the regrind. Many cam grinders
> will do a regrind they just happened to have a balance shaft L35 core
> in stock. The TBI camshaft really doesn't have enough meat on it to
> get a decent grind out of it. The cam only cost me $80. The truck
> idles fine, cold start is not instant like it was before. This makes
> me wonder what is going to happen at low temps. A cat back exhaust is
> probably the next mod. Edlebrock makes headers for this truck, but
> you void the warranty if you ceramic coat them. Is cracking of coated
> headers a big problem. My real hurdle may be emissions testing, its a
> relatively easy test for 4wd just idle and 2200 rpm no load. If I do
> have a problem with emissions I can always loose some intake duration.
> What cam timing is recomended?
More information about the Gmecm
mailing list