Push Rods
Thread Starter
Registered User
Joined: Apr 2002
Posts: 2
From: Berkley, MI, USA
Push Rods
A little history:
I resently rebuilt my 327 with an improved Cam, lifters, push rods, heads, etc. A couple of weeks ago I noticed that the roller rockers were chatering. So, Friday before the dream cruise I pulled my valve covers to adjust the rockers. I found almost all of my push rods had some damage (the tops were being smashed).
My question is, has anyone else seen this and how do I keep it from happening again? I got the car back together and had it out at the the cruise, no problems yet...
Thanks for the help and any advise you can give,
Rick
I resently rebuilt my 327 with an improved Cam, lifters, push rods, heads, etc. A couple of weeks ago I noticed that the roller rockers were chatering. So, Friday before the dream cruise I pulled my valve covers to adjust the rockers. I found almost all of my push rods had some damage (the tops were being smashed).
My question is, has anyone else seen this and how do I keep it from happening again? I got the car back together and had it out at the the cruise, no problems yet...
Thanks for the help and any advise you can give,
Rick
Registered User
Joined: Sep 2001
Posts: 465
From: Scott AFB, IL
Did you replace the pushrods? I wouldn't had drove it with worn pushrods. Anyhow, I am not real technically advance on all those measurements, but a good thing would be to check and see if any other valve train part has been damaged...hope someone else has an answer for you......
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1981 Pontiac FB originally V6, converted to SBC (HEI), Performer RPM, Holley 750 Vac Sec., Chrome Dress up, True Duals
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1981 Pontiac FB originally V6, converted to SBC (HEI), Performer RPM, Holley 750 Vac Sec., Chrome Dress up, True Duals
Registered User
Joined: Dec 1969
Posts: 1,147
From: Phila., PA
Did the rocker arm posi-locks back off, allow the pushrod to start jumping around in it's pocket and cause the damage or was it caused by something else?
Posi locks backing off is easy to fix, any other cause might be more difficult to solve.
Posi locks backing off is easy to fix, any other cause might be more difficult to solve.
Thread Starter
Registered User
Joined: Apr 2002
Posts: 2
From: Berkley, MI, USA
No, they were all tight when I pulled the rockers off. I've never heard of the push rod ends flattening out like that.
It was almost like there wasn't enough steel in the end and only the rocker side. Maybe the Edelbrock valve springs were too stiff for the rods. I would have expected them to bend first not mushroom the end.
Rick
It was almost like there wasn't enough steel in the end and only the rocker side. Maybe the Edelbrock valve springs were too stiff for the rods. I would have expected them to bend first not mushroom the end.
Rick
Registered User
Joined: Jul 1999
Posts: 113
From: Los Altos, CA, USA
Sound like when they rebuilt your motor they probably milled the heads. This is a very common way to get a little more compression out of the motor.
Your pushrods are simply a little too long.
I suggest contracting Crower ( www.crower.com ) and ordering a set of shorter pushrods
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1971 Camaro
12" brakes
16x10" wheels
VSE swaybars
350 / M21
Autocross Competitive
'83 FSP GTI (driver)
Administrator; 2nd Generaton Camaro Owners Group (2GCOG)
www.nastyz28.com/2gcog/2gcog.html
Sales / Tech
"The Speed Merchant" - San Jose, CA
Your pushrods are simply a little too long.
I suggest contracting Crower ( www.crower.com ) and ordering a set of shorter pushrods
------------------
1971 Camaro
12" brakes
16x10" wheels
VSE swaybars
350 / M21
Autocross Competitive
'83 FSP GTI (driver)
Administrator; 2nd Generaton Camaro Owners Group (2GCOG)
www.nastyz28.com/2gcog/2gcog.html
Sales / Tech
"The Speed Merchant" - San Jose, CA
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