Look what I found under the valve covers!
 

I am trying to find the source of a miss that just showed up on my Blazer. I cleaned & gapped the plugs, new wires, cap rotor and it's still there...

I pulled the valve covers to see if maybe a rocker arm fell off and found this! I still have the miss for the moment, but am feeling a bit better about the power plant!

Re: Look what I found under the valve covers!
 

Sweet!
Kind of makes you want to pull the intake, to look for more cool roller stuff, eh?

Re: Look what I found under the valve covers!
 

Apparently a PO had more money than brains. NP
Try opening the hood with the engine running after dark to check for crossfire.

Re: Look what I found under the valve covers!
 

Wow, did not expect that!

Re: Look what I found under the valve covers!
 

Sounds like the surprise I found in a 350 small block I found for $300. When I opened it I found a new crank/cam/pistons along with all the visible parts turned out to be a 71 /350/ 4 bolt and after a little clean up I'm happy with it . :chevy:

Re: Look what I found under the valve covers!
 

lobe on cam is bad bet ya

Re: Look what I found under the valve covers!
 

Those rocker arms look to be Harland Sharp brand, some of the very best roller rockers!!!

Re: Look what I found under the valve covers!
 

Man some folks have all the luck. I'm lucky to find $2 in change under the seat of a new rig.
Congratulations! I hope your as lucky finding your missfire.

Re: Look what I found under the valve covers!
 

That makes two of us :)

Re: Look what I found under the valve covers!
 

I believe they say "Crane Cams" right on them. Cranes the original gold rocker and now Comps. The Harland Sharps are a more copper/orange color.

Cool find though!

Re: Look what I found under the valve covers!
 

I spy my little eye ,,, High bleed lifters by the pic I see, all rockers are on the valve seat position.

Re: Look what I found under the valve covers!
 

Bet the cam is plumb shot and all that metal has been pumped thru the engine...........pull oil filter, cut it open n inspect it..........jmo

Re: Look what I found under the valve covers!
 

Found the miss!

I swapped distributors and it went away - the points were getting worn out. Gonna have to find an HEI dist eventually...

Re: Look what I found under the valve covers!
 

That's one of the first things I did when I bought my 67 GMC. A lot of issues went away with an HEI unit.

Re: Look what I found under the valve covers!
 

Nice find! It's incredible that the PO spent the money for the roller rockers but not an HEI?

Re: Look what I found under the valve covers!
 

There are some of us that don't consider HEI's to be a "Performance" upgrade.
Another scenario is " Let's throw together an engine out of those used race car parts"