Pushrod guideplates on an L82?
Thread Starter
Le Mans Master
Joined: Mar 2002
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From: Coming home from Luckenbach Texas
Pushrod guideplates on an L82?
I removed one of my valve covers in preparation for adjusting the valves. And lo! I beheld a set of pushrod guideplates.
Correct me if I'm wrong here, but a stock '79 L82 doesn't have guideplates. I can't see any markings on the rockers, so I'm not sure what their ratio is.
Any guesses as to what's going on here?
Correct me if I'm wrong here, but a stock '79 L82 doesn't have guideplates. I can't see any markings on the rockers, so I'm not sure what their ratio is.
Any guesses as to what's going on here?
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St. Jude Donor '06-'10, '13
Re: Pushrod guideplates on an L82? (Greg)
If your asking if they are stock, no - they are not (at least that is what I have been told)
try and I.D. the rocker arms to find out what ratio you have. Maybe compare yours with a known 1.6 or 1.5 to see which one it is.
I wonder if someone machined your stock heads and are using 1.6 ratio arms on them.
[Modified by BSeery, 5:34 PM 5/13/2003]
try and I.D. the rocker arms to find out what ratio you have. Maybe compare yours with a known 1.6 or 1.5 to see which one it is.
I wonder if someone machined your stock heads and are using 1.6 ratio arms on them.
[Modified by BSeery, 5:34 PM 5/13/2003]
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Re: Pushrod guideplates on an L82? (Greg)
For when you find the casting number of the cylinder heads ---- http://www.chevytalk.com/tech/engine/SBC_Heads.html
Thread Starter
Le Mans Master
Joined: Mar 2002
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From: Coming home from Luckenbach Texas
Re: Pushrod guideplates on an L82? (BSeery)
This casting number is the stock number. Still a numbers-matching engine, despite some apparent tweaks...
[Modified by page62, 5:45 PM 5/13/2003]
[Modified by page62, 5:45 PM 5/13/2003]
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Team Owner
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Re: Pushrod guideplates on an L82? (Twin_Turbo)
Wow !! Sounds like a lot of the L-82 guys are saying they have guideplates.
I was under the impression that no GM smallblock ever used them from the factory.
:lurk: :lurk: :lurk: :lurk: :lurk: :lurk:
I was under the impression that no GM smallblock ever used them from the factory.
:lurk: :lurk: :lurk: :lurk: :lurk: :lurk:
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Re: Pushrod guideplates on an L82? (Roscoe's C3's)
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Re: Pushrod guideplates on an L82? (page62)
Casting number (I think) is 462624. There is also a big "GM" cast on the head.
These are crack prone!
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Re: Pushrod guideplates on an L82? (BSeery)
yes, they are the 76cc 1,94 x 1,5 thin casting open chamber design smog heads. Absolutely the worst head ever produced by GM. Restrictive, weak, poor chamber design,.. JUNK.
Team Owner
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Re: Pushrod guideplates on an L82? (Twin_Turbo)
yes, they are the 76cc 1,94 x 1,5 thin casting open chamber design smog heads. Absolutely the worst head ever produced by GM. Restrictive, weak, poor chamber design,.. JUNK.
Tell us what you REALLY think !! :jester
I agree, late model cheap casting smog heads. A set of newer / better heads would be a good start if you want to build some HP.
Nice to know what the L-82's had on them for cylinder heads now. I am disapointed in GM for using this casting when there was much better to be had in the parts bin. I would expect this on a L-48 but not a L-82.
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Le Mans Master
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From: Coming home from Luckenbach Texas
Re: Pushrod guideplates on an L82? (dman535)
The good: large valves, guideplates
The bad: large volume smog heads
The ugly: junk castings, prone to cracking
:eek:
The bad: large volume smog heads
The ugly: junk castings, prone to cracking
:eek:
Drifting
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From: Manchester, Dead Center in the Middle of TN 25 miles to Jack Daniels,10 miles to Geo Dickle, and .8 mile from the Liquor Store at I-24 Exit 114
St. Jude Donor '05
Re: Pushrod guideplates on an L82? (dman535)
My '80 L-82 heads have the plates and screw in studs but they do not have the 202 valves they are 1.97. JIM
