Guideplates question
Thread Starter
Joined: May 2006
Posts: 3,974
Likes: 2
From: Spring Hill, FL
Guideplates question Alright here is the setup, PAC beehives (1218? IIRC), Comp Ultra Promags 1.6, hardened pushrods/guideplates, 3/8" studs, ported stock heads(stock valves so far as I can tell).
Some of the rockers do not line up all that well. What are my guideplate options? I searched around a bit, someone mentioned trickflow guideplates, not sure if that is only for trickflow heads or stock heads.
What are my options? I don't remember who made the current hardened guideplates that are on my motor.
Looking at taking care of this though as I have the covers off, I broke a polylock.
Some of the rockers do not line up all that well. What are my guideplate options? I searched around a bit, someone mentioned trickflow guideplates, not sure if that is only for trickflow heads or stock heads.
What are my options? I don't remember who made the current hardened guideplates that are on my motor.
Looking at taking care of this though as I have the covers off, I broke a polylock.
TECH Resident
Joined: Jun 2013
Posts: 853
Likes: 32
From: Kernersville, NC
This will help with your trickflow question. I have them on stock heads. No problems in 5 years. The part number is "TFS-30400623-8".
https://ls1tech.com/forums/lt1-lt4-m...ification.html
https://ls1tech.com/forums/lt1-lt4-m...ification.html
TECH Enthusiast
Joined: Jan 2013
Posts: 686
Likes: 76
From: Thibodaux LA
i got isky adjustable guide plates. i havent installed them yet, but i did research on them, and there was alot of positive stuff about them. and since they are adjustable, you know they will line up. just tack weld them and they are good to go. plus i got them free too
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Thread Starter
Joined: May 2006
Posts: 3,974
Likes: 2
From: Spring Hill, FL
The trickflows seem more tempting as they would be a bolt in and go kind of deal....
They are hardened??
Also I saw in that linked thread about the torque spec on the rocker studs, what is the magic number? I don't think I see it listed in either the Haynes or Chiltons. Some day I plan on picking up the factory manuals.
They are hardened??
Also I saw in that linked thread about the torque spec on the rocker studs, what is the magic number? I don't think I see it listed in either the Haynes or Chiltons. Some day I plan on picking up the factory manuals.
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I bought a set of Jegs brand guideplates and never had any alignment problems with them. I compared them to the Trick Flows listed above and the slots/stud holes looked like they were in the same spots.
TECH Veteran
Joined: Apr 2008
Posts: 4,985
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IMHO a guideplate that has adjustment "L to R" for each inake & exhaust valve is ideal to get the RR to be dead nuts centered on valve stem tip (L to R). The ISKY's allow this as you can adjust the intake and exhaust separately without affecting the other because they are "two piece" guideplates.
I found the single piece ones did not accommodate this L to R adjustment even with larger holes the RR studs go through to allow some L to R adjustment. Doing so affects the other valve alignment
just my $.02
I found the single piece ones did not accommodate this L to R adjustment even with larger holes the RR studs go through to allow some L to R adjustment. Doing so affects the other valve alignment
just my $.02
TECH Veteran
Joined: Apr 2008
Posts: 4,985
Likes: 112
The holes in each 1/2 are slotted to allow some L&R adjustment. You grind off some of the fingers if they both need to slide together closer. What I had to do on some of them.
These adjustable guideplates really allow dead nut centering of RR on valve tip in terms of L to R positioning. Something a fixed guideplate will not do and I found those types did not get all the RR aligned, some were off quite a bit