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sleeperstang · 05-08-2003, 04:13 PM

If Rail Rockers were to be installed onto a 1965 with no modifications for the rail rockers what could happen?

I started a post on a problem with my rebuilt engine, and I found out yesterday that the machine shop mix-matched rail rockers and non-rail rockers on my 1965 289 heads. I am under the assumption now that this is the cause for failure. Comp Cams catalog mentions that Rail Rockers can not be used on this type of heads, so my question is......Why?

What is it that can go wrong if this is the case. If anyone has experience with this please post. I'm trying to verify this so that the machine shop doesn't try to void my warranty or get out of fixing any damage.

Thanks!

05-08-2003, 04:13 PM	#1
sleeperstang Registered Member Join Date: Jun 2001 Location: Lynwood, CA, U.S.A. Posts: 82	Rail Rockers on 289 Small Block Heads If Rail Rockers were to be installed onto a 1965 with no modifications for the rail rockers what could happen? I started a post on a problem with my rebuilt engine, and I found out yesterday that the machine shop mix-matched rail rockers and non-rail rockers on my 1965 289 heads. I am under the assumption now that this is the cause for failure. Comp Cams catalog mentions that Rail Rockers can not be used on this type of heads, so my question is......Why? What is it that can go wrong if this is the case. If anyone has experience with this please post. I'm trying to verify this so that the machine shop doesn't try to void my warranty or get out of fixing any damage. Thanks! __________________ 65 Mustang Coupe...Comp Cams 262 Xtreme Energy, T-5 conversion, Romac Balancer, 620 Front Springs-4.5 Mid-eye rear springs.......work in progress