3.9, 5.2, and 5.9 valve springs are the same as well as I'm aware of.
If you are doing a cam, or expect to spin to 6000 often, a valvespring and
retainer upgrade is an excellent idea.
TonyC
-----Original Message-----
From: Gabriel A. Couriel <gcouriel@bellsouth.net>
To: DML <dakota-truck@dakota-truck.net>
Date: Saturday, September 25, 2004 9:06 PM
Subject: DML: 1.7RR question
>
>when you upgrade from the stock rockers, to 1.7RR's, do you need to replace
>the stock valvesprings with the R/T springs? if not, is it recommended (i
>would imagine so)? i was just wondering.
>
>Gabriel Couriel
>
>
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