From 69 TSM:
Cam lobe lift - 0.265"
Intake Valve
Opens 18*-30' BTDC
Closes 67*-30' ATDC
Exhaust Valve
Opens 60*-30' BBDC
Closes 25*-30' ATDC
Duration (both) 266*

Total valve lift is cam lobe lift x rocker arm ratio. I think the ratio is 1.5:1? Or is it 1.6:1 like the sixes? (0.3975" or 0.4505" lift?)

--------------------
Date: Wed, 23 Jul 2008 09:06:08 -0700 (PDT)
From: Greg Taylor

Hey guys,
I'm trying to find the stock cam specs for the 10:1 290/343/360 motors.? Can someone please point me in the right direction or email me back please.? Thanks!

--
Frank Swygert
Publisher, "American Motors Cars"
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

_______________________________________________
Amc-list mailing list
Amc-list at amc-list dot com
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list

> I'm trying to find the stock cam specs for the 10:1 290/343/360
motors.?

The TSM's list the specs, which appear to be the same for the
290/343/304/360 motors, and the '69 390. From my 69 and 70 TSM's:

Intake Cam Lobe Lift 0.265"

Intake Valve Timing
Opens 18 degrees 30 minutes BTDC
Closes 67 degrees 30 minutes ABDC
Duration 266 Degrees

Exhaust Cam Lobe Lift 0.265"

Exhaust Valve Timing
Opens 60 degrees 30 minutes BBDC
Closes 25 degrees 30 minutes ATDC
Duration 266 degrees

Valve Opening Overlap 44 degrees

_______________________________________________
Amc-list mailing list
Amc-list at amc-list dot com
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list

Frank and David,
Thanks for the information.  Do you know if the 266* duration is advertised or at 0.050" lift (I assume advertised)?  Thanks.
 

Sincerely,
Greg Taylor :) <><
Rochester Hills, MI
1989 Jeep Grand Wagoneer "TRMN8R2"

And the testimony is this, that God has given us eternal life, and this life is in His Son. He who has the Son has the life; he who does not have the Son of God does not have the life. - 1 John 5:11-12

--- On Wed, 7/23/08, David Crooks wrote:

From: David Crooks
Subject: Re: [Amc-list] Need Cam Specs for High compression 290/343/360
To: amc-list at amc-list dot com
Date: Wednesday, July 23, 2008, 7:30 PM

> I'm trying to find the stock cam specs for the 10:1 290/343/360
motors.?

The TSM's list the specs, which appear to be the same for the
290/343/304/360 motors, and the '69 390. From my 69 and 70 TSM's:

Intake Cam Lobe Lift 0.265"

Intake Valve Timing
Opens 18 degrees 30 minutes BTDC
Closes 67 degrees 30 minutes ABDC
Duration 266 Degrees

Exhaust Cam Lobe Lift 0.265"

Exhaust Valve Timing
Opens 60 degrees 30 minutes BBDC
Closes 25 degrees 30 minutes ATDC
Duration 266 degrees

Valve Opening Overlap 44 degrees

_______________________________________________
Amc-list mailing list
Amc-list at amc-list dot com
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://splatter.wps.com/pipermail/amc-list/attachments/20080724/f3d8fea8/attachment.htm
_______________________________________________
Amc-list mailing list
Amc-list at amc-list dot com
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list

I assume it's advertised -- it's from start of opening to fully closed.

----------------
Date: Thu, 24 Jul 2008 06:11:41 -0700 (PDT)
From: Greg Taylor

Frank and David,
Thanks for the information.? Do you know if the 266* duration is advertised or
at 0.050" lift (I assume advertised)?? Thanks.

--
Frank Swygert
Publisher, "American Motors Cars"
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

_______________________________________________
Amc-list mailing list
Amc-list at amc-list dot com
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list