Slotting stock rockers

Kenny Wigington · 06-21-2009, 12:00 PM

Skip, look here-http://competitionproducts.com/prodinfo.asp?number=6151

Buy 2 sets and have spares. They are pretty tough !

Michigan Skip · 06-21-2009, 12:15 PM

Quote:

Originally Posted by Kenny Wigington

Skip, look here-http://competitionproducts.com/prodinfo.asp?number=6151

Buy 2 sets and have spares. They are pretty tough !

Thanks Kenny, a friend showed that to me a little while ago. I sprang for a new set of GM 3/8" quite a while ago intending to eventually get around to opening them up.

I had already bought the 7/16 balls too. Maybe I need to have a garage sale?

Kenny Wigington · 06-21-2009, 12:39 PM

No problem , Skip ! I think you would do better by getting those than having possible issues with modified ones splitting , and they are fairly cheap too. You can come up with a service life, depending on your spring pressure, and keep rolling ! Good luck !

Cam · 06-21-2009, 08:51 PM

A few of years ago I upgraded my rocker studs to 7/16 and hand fit the studs to the rockers. This was done in my garage, nothing high tech but careful grind/polish to keep heat generation low and "soft jaws" that leave no stress risers. A paper clip was used to check rocker/stud clearance through the travel. Put it all together and checked valve lift to make sure I didn't gain any static lift.
All was well until I started the engine and there was no oil out of most of the pushrods. A call to Schubeck and all the lifters came out and apart to regrind the oil slot inside the lifters. Some intermittant QC problem he was aware of.
After that they are still in service several years later. It would be much better to buy the new CP 1.5 X 7/16" units but we were heading to Mission the next day.

06-21-2009, 12:00 PM	#1
Kenny Wigington Senior Member Join Date: Sep 2004 Location: Cumming,Ga. USA Posts: 967 Likes: 36 Liked 60 Times in 12 Posts	Re: Slotting stock rockers Skip, look here-http://competitionproducts.com/prodinfo.asp?number=6151 Buy 2 sets and have spares. They are pretty tough ! __________________ 2894 STK

06-21-2009, 12:39 PM	#3
Kenny Wigington Senior Member Join Date: Sep 2004 Location: Cumming,Ga. USA Posts: 967 Likes: 36 Liked 60 Times in 12 Posts	Re: Slotting stock rockers No problem , Skip ! I think you would do better by getting those than having possible issues with modified ones splitting , and they are fairly cheap too. You can come up with a service life, depending on your spring pressure, and keep rolling ! Good luck ! __________________ 2894 STK

06-21-2009, 08:51 PM	#4
Cam Junior Member Join Date: May 2004 Location: Prince George, BC, Canada Posts: 83 Likes: 5 Liked 0 Times in 0 Posts	Re: Slotting stock rockers A few of years ago I upgraded my rocker studs to 7/16 and hand fit the studs to the rockers. This was done in my garage, nothing high tech but careful grind/polish to keep heat generation low and "soft jaws" that leave no stress risers. A paper clip was used to check rocker/stud clearance through the travel. Put it all together and checked valve lift to make sure I didn't gain any static lift. All was well until I started the engine and there was no oil out of most of the pushrods. A call to Schubeck and all the lifters came out and apart to regrind the oil slot inside the lifters. Some intermittant QC problem he was aware of. After that they are still in service several years later. It would be much better to buy the new CP 1.5 X 7/16" units but we were heading to Mission the next day. __________________ Cam Chowen 6067 1994 Camaro C/S