Look what I found under the valve covers! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Paul72 · 07-12-2019, 08:40 PM

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!

Greasey Harley · 07-12-2019, 11:31 PM

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

franken · 07-12-2019, 11:46 PM

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

07-13-2019, 02:51 AM

Wow, did not expect that!

**Grumpy old man** · 07-13-2019, 07:45 AM

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 .

BCOWANWHEELS · 07-13-2019, 11:59 AM

lobe on cam is bad bet ya

68Gold/white · 07-13-2019, 12:31 PM

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

Mike C · 07-14-2019, 07:52 PM

Quote:

Originally Posted by 68Gold/white

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

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!

hjewell2 · 07-14-2019, 08:35 PM

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

**HO455** · 07-13-2019, 02:21 PM

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.

**Rickysnickers** · 07-13-2019, 03:32 PM

Quote:

Originally Posted by HO455

Man some folks have all the luck. I'm lucky to find $2 in change under the seat of a new rig.

That makes two of us

BCOWANWHEELS · 07-14-2019, 09:35 PM

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

Paul72 · 07-16-2019, 03:59 PM

Found the miss!

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

Ken O. · 07-16-2019, 04:17 PM

Quote:

Originally Posted by Paul72

Found the miss!

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

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.

cypressbog · 07-18-2019, 05:53 PM

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

**HO455** · 07-18-2019, 07:58 PM

Quote:

Originally Posted by cypressbog

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

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"

07-12-2019, 08:40 PM	#1
Paul72 Registered User Join Date: Sep 2003 Location: Waterloo, IA Posts: 1,147	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! Attached Images __________________ '72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958

07-12-2019, 11:31 PM	#2
Greasey Harley Registered User Join Date: May 2013 Location: Post Falls, ID Posts: 900	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?

07-12-2019, 11:46 PM	#3
franken Registered User Join Date: Jun 2013 Location: Somewhere Posts: 3,128	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.

07-13-2019, 02:51 AM	#4
Martyt Guest Posts: n/a	Re: Look what I found under the valve covers! Wow, did not expect that!

07-13-2019, 07:45 AM	#5
Grumpy old man Senior Member Join Date: Dec 2013 Location: Gods country East,Tn Posts: 8,545	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 . Attached Images __________________ 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop

07-13-2019, 11:59 AM	#6
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: Look what I found under the valve covers! lobe on cam is bad bet ya __________________ I BELIEVE IN JOHN 3:16

07-13-2019, 12:31 PM	#7
68Gold/white Registered User Join Date: Sep 2011 Location: Ark City, Kansas Posts: 3,413	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!!!

07-14-2019, 08:35 PM	#9
hjewell2 Registered User Join Date: May 2011 Location: mich Posts: 655	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.

07-13-2019, 02:21 PM	#10
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,395	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. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

07-14-2019, 09:35 PM	#12
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	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 __________________ I BELIEVE IN JOHN 3:16

07-16-2019, 03:59 PM	#13
Paul72 Registered User Join Date: Sep 2003 Location: Waterloo, IA Posts: 1,147	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... __________________ '72 Chevy K20 - 383/4sp/205 - SOLD after 41 years in the family Next project - K/5 Tahoe (71 Blazer on 99 Tahoe chassis) Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=789958

07-18-2019, 05:53 PM	#15
cypressbog Go Pack Go! Join Date: Nov 2005 Location: Green Bay Posts: 2,669	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?



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