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A Strong Street Cam

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Rodger View Drop Down
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    Posted: Aug/09/2010 at 4:55pm
Hello All
I now have a 1980 360 that I what to be a strong "street engined" car ( in a 1975 Hornet ).
 
With some AMC "home work" reading I see AMC has used the same cam spec's in the 360 from 1976 to 1988.  It seems this same cam was also used in the 401's.  ... NAPA shows this cam is # CS-646. 
 
What happens to the street used power/MPG if the same era NAPA # CS-1026R Cam is used in the same 360 Engine ???
 
Or
 
Show me a engine data chart from yester-year on the "regular" 4 bbl 360 and the "Police" version that would have came with the CS-1026R spec'd camshaft.
 
 
Rodger & Gabby
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rodger Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2010 at 5:29pm

Hello All (again )

The CS-1026R was used on 290's, 343's, 390's.  The new 304's, 360's and even the 401's.
 
AMC Cam Spec's are:
InTake
Int Dura......280
Exh Dura .....295
 
 
Exhaust
Int Dura ..... 204
Exh Dura .... 214
 
The smog cam ( aka CS-646 ) was also used in every V8.
 
AMC"smog cam" Cam Spec's are:
 
269 for the Int and the Exh.
and
196 for both the Int and the Exh.
 
 
 
Rodger & Gabby
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purple72Gremlin View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2010 at 6:31pm
401's used a different cam than the 360's...................2BBL-4BBL 360's used the same cam. actually the 304's used the same cam as the 360 did as well.
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Rodger View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rodger Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2010 at 7:14pm
Sir
 
What was the Spec's on the Cam Shafts used for any of the 401's ?
 
The NAPA's only have what I listed.
**********************************************************
 
If one uses a cam spec'd as you have stated in the 360, then what ???
 
 
Rodger & Gabby
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Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2010 at 7:17pm
Originally posted by Rodger Rodger wrote:

Sir
 
What was the Spec's on the Cam Shafts used for any of the 401's ?
 
The NAPA's only have what I listed.
**********************************************************
 
If one uses a cam spec'd as you have stated in the 360, then what ???
 
 
Rodger & Gabby
COS
Sir,  I have TSM's from 1971-76. and they say the same thing.  (Im talking a stock camshaft,  what Napa may have sold years ago may not be availible now so Id just find whats availible today)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote poormansMACHINE Quote  Post ReplyReply Direct Link To This Post Posted: Aug/09/2010 at 7:30pm
Don't base what came from the factory by looking in a sealed power catalog.
As an aftermarket replacement, they will sell you the same generic 304/360 cam for your 401 since the 401 cam was never reproduced.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote amcamx70ny Quote  Post ReplyReply Direct Link To This Post Posted: Dec/08/2010 at 10:47pm
Anyone know the specs of the 401 "police" cam?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote poormansMACHINE Quote  Post ReplyReply Direct Link To This Post Posted: Dec/08/2010 at 10:50pm
Originally posted by amcamx70ny amcamx70ny wrote:

Anyone know the specs of the 401 "police" cam?

Did they ever produce one?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billd Quote  Post ReplyReply Direct Link To This Post Posted: Dec/08/2010 at 11:29pm
Not that I'm aware of. They used stronger valve springs, and stronger springs in the lifters, and larger clearances in the bore and wrist pin. That's about it, isn't it, besides the pan?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote poormansMACHINE Quote  Post ReplyReply Direct Link To This Post Posted: Dec/09/2010 at 4:21pm
Originally posted by billd billd wrote:

Not that I'm aware of. They used stronger valve springs, and stronger springs in the lifters, and larger clearances in the bore and wrist pin. That's about it, isn't it, besides the pan?

Usually a lot more myth than fact associated with "police" engines.
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