How can I tell what cam is in my old 86 4.2? - Page 8 - Jeeps Canada

05-22-2004, 07:24 PM

#71

c

Guest

Posts: n/a

Re: How can I tell what cam is in my old 86 4.2?

I don't have any of the stock AMC stuff, but over the years of building
engines I've aquired a lot of the numbers and decoding steps from the
aftermarket cam makers. The one thing you have to be careful of on the cam
numbers is that there is a number for the cam blank, and then a grind
number. The cam blank number is useless to you and I because one blank can
be used for several different grinds, and to make matters worse, some of the
smaller cam grinders buy their blanks from the bigger cam companies.

Chris

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40AFD599.A30D095B@***.net...
> Hi Chris,
> Where do you find that info? I can find intake opening specs for
> virtually any car via a zillion trade manuals, for trouble shooting:
> http://www.----------.com/73AMCvalveTime.jpg And commonly used stock
> numbers like: http://www.holisticpage.com/camaro/parts/cam.htm But no
> AMC cam codes. They're not at: http://www.amcrc.com/tech/tech.html And
> Cam manufacturers of course use their own codes.
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> c wrote:
> >
> > I can decode many of the numbers Bill. If he posts them here, I will see
> > what I can do.
> >
> > Chris

Reply

05-22-2004, 07:24 PM

#72

c

Guest

Posts: n/a

Re: How can I tell what cam is in my old 86 4.2?

I don't have any of the stock AMC stuff, but over the years of building
engines I've aquired a lot of the numbers and decoding steps from the
aftermarket cam makers. The one thing you have to be careful of on the cam
numbers is that there is a number for the cam blank, and then a grind
number. The cam blank number is useless to you and I because one blank can
be used for several different grinds, and to make matters worse, some of the
smaller cam grinders buy their blanks from the bigger cam companies.

Chris

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40AFD599.A30D095B@***.net...
> Hi Chris,
> Where do you find that info? I can find intake opening specs for
> virtually any car via a zillion trade manuals, for trouble shooting:
> http://www.----------.com/73AMCvalveTime.jpg And commonly used stock
> numbers like: http://www.holisticpage.com/camaro/parts/cam.htm But no
> AMC cam codes. They're not at: http://www.amcrc.com/tech/tech.html And
> Cam manufacturers of course use their own codes.
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> c wrote:
> >
> > I can decode many of the numbers Bill. If he posts them here, I will see
> > what I can do.
> >
> > Chris

Reply

05-22-2004, 07:24 PM

#73

c

Guest

Posts: n/a

Re: How can I tell what cam is in my old 86 4.2?

I don't have any of the stock AMC stuff, but over the years of building
engines I've aquired a lot of the numbers and decoding steps from the
aftermarket cam makers. The one thing you have to be careful of on the cam
numbers is that there is a number for the cam blank, and then a grind
number. The cam blank number is useless to you and I because one blank can
be used for several different grinds, and to make matters worse, some of the
smaller cam grinders buy their blanks from the bigger cam companies.

Chris

"L.W. (ßill) ------ III" <----------@***.net> wrote in message
news:40AFD599.A30D095B@***.net...
> Hi Chris,
> Where do you find that info? I can find intake opening specs for
> virtually any car via a zillion trade manuals, for trouble shooting:
> http://www.----------.com/73AMCvalveTime.jpg And commonly used stock
> numbers like: http://www.holisticpage.com/camaro/parts/cam.htm But no
> AMC cam codes. They're not at: http://www.amcrc.com/tech/tech.html And
> Cam manufacturers of course use their own codes.
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> c wrote:
> >
> > I can decode many of the numbers Bill. If he posts them here, I will see
> > what I can do.
> >
> > Chris

Reply