I'm putting new cam, heads, and non self aligning roller rockers on my 94 Z so I need some pushrod guides. I ordered the $15 set from Comb. Motor. but they don't seem to fit so well. I read in a previous post that the best guides to get are the stock GM guides (part number 14011051). I called the dealer today and the guy in the parts department came up with the part and said it would take three days or so to get them in. Then he called back and said that for my vin # he came up with a different part number for the guides. He said that apparently there are two different pushrod guideplates made by GM and that the part number I gave him is some kind of performance number or something. The number he came up with he has in stock.

Does anyone know anything about this????

 

I am sure the 14011051 works. Don't know about the other.

 

Well if some state they work, so be it. I've mocked them up on LT1 heads, and wasn't the least bit impressed. On some valves/positions they are indeed close, others line up very poorly, AFAIC. If you want guides that line up well, you'll need to go with adjustable plates, like those offered by Isky.

 

Yes the ones that Rob (shoebox) listed work good. He suggested them to me. Mine from CM did not work either. I glad I got them free.

 

Perhaps you mean some GM SBC guideplates? The 14011051 plates line up quite well on my heads. Obviously, adjustable plates will get you whatever spacing you want.

 

Rob, the plates I checked/mocked up were #14011051. They were inconsistant from valve to valve. So, for me, not recommendable.

 

I agree arnie. Seems that there's a bit of iconsistency with guideplates. Maybe the stamping process... worn/mislocated dies.
Adjustables are the way to go.

-Mindgame

 

Yeah, could be. Though the GM plates were way better than the SBC ones that I had. As stated, use adjustable to get the perfect fit.

 

As far as the stamping process is concerned, (in this case the #1051) the same tool(s) are used to to 'spit' out thousands, so I'm not implying the plates themselves vary. I've found I can put the same #1051 guideplate on different pairs of studs, and get varying degrees of alignment on each one of a given pair. IOW, one or the other aligns better. Maybe I'm too much of a perfectionist, but to get the same precise alignment on both of the given pair, requires adjustables. Did I make any sense?