I suspect that the increase ratio of the rocker arms will make the
valves open/close faster (ramp rate?) and open further given the same
cam. The valves will still be completely open or shut at the same time
regardless.
Alan
'98 Dakota R/T (Headers, FABM & waiting for Shift kit)
'89 Mustang GT (347, Griggs, S-trim...)
Ducati 916 (someday)
-----Original Message-----
From: Tim [mailto:magnum318@bewellnet.com]
Sent: Tuesday, October 13, 1998 11:17 AM
To: dakota-truck@buffnet.net
Subject: DML: Re: RE: rocker arms --ATTN. Frank
Holloway
From: Tim Roller>magnum318@mail.bwn.net
wed.11:08pm
>>Frank--you mentioned that 1.7's gave more lift and
duration. I understand
the lift, BUT more duration? How is that possible--the
cam grind determines
what the duration is --Does the rocker change offset to
the cam and make
the valves hold open longer ? That's a new one on me,
from all the engines I
used to rebuild--that Would save a lot of money and time
from changing out
the cams to wilder grinds.
-----Original Message-----
From: Holloway,Frank T <Frank.T.Holloway@KP.ORG>
To: 'dakota-truck@buffnet.net'
<dakota-truck@buffnet.net>
Date: Wednesday, October 14, 1998 9:48 AM
Subject: DML: RE: rocker arms
>Bill,
>Factory rocker arm ratio is 1.6 I use the Crane roller
rockers and I am
>happy with them. If you want a higher ratio, Try
Crower, they have a 1.7
>(easier way to get
>more lift and duration with the factory cam)....
> Frank
>
>> -----Original Message-----
>> From: William Blount Arthur
[SMTP:m990198@nadn.navy.mil]
>> Sent: Tuesday, October 13, 1998 9:56 PM
>> To: dakota mailing list
>> Subject: DML: rocker arms
>>
>> Do any of ya'll know what the stock rocker ratio is?
Also, why wouldnt
>> any roller rockers work on our trucks, we dont have
shaft rockers as far
>> as I know. If any of you have replaced the rocker
arms with rollerized
>> ones, do you like it and is it worth the $? Thanks.
>>
>> Bill
>> '97 SS/T
>
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