$hawn

I have the comp cams pro magnum rocker arm and when I turn the engine over the ones that I just adjusted come right off the valve and pushrod but the nut is tight. What could be wrong?

shoebox

Lifters collapsed or your not adjusting them correctly.

Colin91Z

$hawn, I have done this may times, if you want I could stop by and see if I can help you figure out what the problem is. You still have my cell # right?

$hawn

Hears the deal, I put new heads and thinner head gaskets, so at first I used stock lenght pushrods, there too long but I had them adjusted fine, then I put some shorter pushrods in and the car woudnt stay running. Figured out that the rockers arent staying tight after I adjust them, I turn the motor over and the ones I did are real loose. The lifters I cant push in with the pushrods by hand so they seem to be pumped up, I think.

shoebox

You should not change pushrod length unless you have determined that you need it to maintain proper geometry.

$hawn

Right, I used a pushrod lenght check, I didn't mean for it to sound as if I just put in some shorter ones laying around.

shoebox

Good. It's always helpful to have all the info.

slopokrodrigez

What's the part number of the rockers you used?

$hawn

The 1305, 1.6 7/16 non self aligning.

30696bird

I used the same ones. Did you get the guide plates? I had no issues with mine. You ought to have colin91Z come over and help you out.

slopokrodrigez

So do you have guide plates?

$hawn

Yes I have guide plates, once I pulled my head out of my butt, I got it, I think the problem was I didnt adjust some of them at tdc, and once I turned the motor over they were loose, but I got some help to watch the valves this morning and got it figured out.

slopokrodrigez

Not to beat a dead horse but you did get hardened pushrods to use with the guide plates didn't you?

$hawn

Yes sir.

cehan

I understand that the standard SBC guide plates aren't properly spaced for LT1's and will cause the roller rocker to ride offcenter on the valve stem. The ones to use are the GMPP p/n 14011051.

Chris