Is there a normal running clearance for pushrods & guideplates. I was always told 0.005" on each side of the pushrod or a total of 0.010" on one side. Is that right?.

I've never seen a spec for it but that sounds like it will work.
Make shure the pushrods are hardened or they will not work with guide plates. The plates will eat them up.
I guess this is only a problem on smallblocks as all bigblocks have allways used guideplates.
David

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Check my web page for First Gen Camaro suspension info:
David's Motorsports page (http://ourworld.compuserve.com/homepages/David_Pozzi/)
First Gen Suspension Page (http://ourworld.compuserve.com/homepages/David_Pozzi/first_gen_suspension.htm)
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Can Am Vintage Racer

bigblockkid,

Right on about what David said.

Some of the new stock heads have assembly guideplates on them that aren't true guideplates because I think they use guided rocker arms at the valve tip end. They are just to line up everything until the engine is assembled. pdq67