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Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!

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Old 08-12-2009, 12:41 AM   #1
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Car: 1988 Pontiac trans am
Engine: 305
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know your shapes?????

hey anyone know what the "big triangle" "small triangle" markings on an 88 lo3 rocker arms are ??? do they indiate intake and exhaust valve ? would the afet how the valve opens/loses if miss-matched?
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Old 08-12-2009, 10:56 PM   #2
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Car: 84 trans am
Engine: 305 5.0L HO
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Re: know your shapes?????

I'm not sure they actually mean intake or exhaust....
All my rockers but like 3 had either a large or small triangle....they were specific to neither.
I actually recall looking coz it wasn't too long ago I did it.
I was posed with the same question back then.

But it's highly possible that I am wrong. My personal experience has been thus tho'.
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Old 08-12-2009, 10:56 PM
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