[DeTomaso] more on pushrod guide plates

[Justin Greisberg]

hard to say.  i had harlan sharp roller rockers, cleveland specific.  some people say to just use big block chevy rockers instead of cleveland specific.  by the time I had the pushrod length set properly to keep the rocker on the center of the valve stem, the rocker was tipped quite a bit over, so my pushrods ended up being about 8.2", which is much shorter than stock, and the same as standard small block chevy!  the roller rocker arm sits at quite an angle, but seems to work OK.  havent broken anything yet, but only have 2 hours on the engine.  
 
with the combination of aftermarket aluminum heads (CHI), aftermarket rockers (harland sharp), and aftermarket roller lifters (i used crane with link bar), the valvetrain geomety is nowhere near stock.  all I can say is that the comp cams guideplates were no good in my application, and at least one engine builder confirmed.  They now decorate my wall, so if someone wants a set real cheap, let me know.  justin
 
P.S. - if anyone is building this combination, you have to know which length rocker stud to order - i think there are at least 3 possibilities from ARP.  summit is great because they take returns if not used!
I went through a lot of research setting up my engine and I learned a lot about building a cleveland.  maybe I should make a book.
 


Date: Wed, 18 Aug 2010 06:57:28 -0700
From: kenn_green at yahoo.com
Subject: Re: [DeTomaso] more on pushrod guide plates
To: detomaso at realbig.com; justingreisberg at hotmail.com






Justin,
 
   I had the negative comments about Manley guide plates.  They are on 4V heads, and the Manley plates were a lousy fit, but also, the step on the intake valve side is so close to the rocker arm stud that I couldn't get an 11/16 deep socket on the stud.  I have ARP studs that are suppose to be torqued to 65 ft-lbs, and even tripple nutting them was only marginally enough to break them loose or torque them.  
 
    I also have Comp Cams lifters and rockers, so I suppose there could be something about the rockers?  Or maybe it's a quality control thing and hit or miss?  But being able to get the deep socket on the Comp Cams plates was a big plus to me.
 
Ken

--- On Wed, 8/18/10, Justin Greisberg <justingreisberg at hotmail.com> wrote:


From: Justin Greisberg <justingreisberg at hotmail.com>
Subject: [DeTomaso] more on pushrod guide plates
To: detomaso at realbig.com
Date: Wednesday, August 18, 2010, 5:07 AM



someone just wrote about how manley guide plates did not fit right, but the comp cams did.  I have CHI heads and roller rockers and found the comp cams guideplates to be unuseable - dont fit at all.  i think the manleys fit fine for me, with 3/8" pushrods.  just a word of warning.  pushrod guideplates are a challenging fit for cleveland engines.  Dave storlein, a noteable cleveland builder confirmed the same to me.  justin                           
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