1.6:1 rockers
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
You can get the Comp Cams ProMagnum RRs in either self aligning not not, though if you want to upgrade the rocker studs to 7/16" they are only available in non self aligning.
This presents no problem though as the total price works out about the same and you need to pull the stock non-hardened guide plates (on Al head L98s) anyway.
BTW, the Comp Cams #981 springs (seat 110lbs at 1.70") work well with a stock cam & 1.6:1 RRs on my '88 L98.
This presents no problem though as the total price works out about the same and you need to pull the stock non-hardened guide plates (on Al head L98s) anyway.
BTW, the Comp Cams #981 springs (seat 110lbs at 1.70") work well with a stock cam & 1.6:1 RRs on my '88 L98.
Race Director
Joined: Jan 2002
Posts: 12,263
Likes: 86
From: O'Fallon Missouri
I'm also interested in this set-up. I have to do the valve seals, so I figured I might as well change springs and go with the 1:6 rockers too. Which brand rockers are recommended? And does GM sell a kit with the lt4 springs, locks, and retainers or do you have to get them seperately? I did a little looking around on line and could not find a kit that included everything. Any help appreciated 
LT4 springs #12495494
Retainers # 12495492
Locks #12495503
Call Dallas at Van Devere Olds for a good deal. 1-800-362-9494
Drifting
Joined: May 2003
Posts: 1,979
Likes: 48
From: Lakeport CA
w/ much of the above. My '90 is alum 113 heads & I did run stock springs, non self aligning Harlin Sharps, 7/16 studs & stock guide plates/pushrods for a few years.However, when I did a valve job I found the following:
stock springs were toast, about 60 psi seat pressure
stock guide plates are NOT hardened & had began to wear
stock pushrods ARE hardened & I used them over.
New springs, ditch the rotators, machine valve stems & spring seats for good seals, new hardened guide plates. Now things are
