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09-25-2016, 08:03 PM
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#1 |
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Registered User
Join Date: Aug 2010
Location: lubbock texas
Posts: 96
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1966 283 stock compression??
guys,
I am trying to decide if my bone stock 66' 283 needs to be rebuilt or not, it is currently on an engine stand, my question is this: what compression reading should I be getting on my gauge? I am rotating it by hand. would it be worth putting the starter back on it and rigging it up to use for rotating the motor? |
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09-25-2016, 08:07 PM
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#2 |
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Senior Member
 
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: 1966 283 stock compression??
By hand will be way to slow. You can do a leak down test on the stand. Will give you good info in the condition.
Jimmy
__________________
60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
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09-27-2016, 12:19 PM
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#3 |
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Registered User
Join Date: Aug 2010
Location: lubbock texas
Posts: 96
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Re: 1966 283 stock compression??
can no one tell me what i should be seeing for compression on a stock 283 ??
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09-27-2016, 01:13 PM
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#4 |
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Registered User
Join Date: Mar 2010
Location: thomastown mississippi
Posts: 1,261
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Re: 1966 283 stock compression??
With carb butterflies open at cranking speed a fresh 283 outta show you around 150 psi. P.P. heads may be 5-10 psi higher.
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09-27-2016, 02:06 PM
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#5 |
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Registered User
Join Date: Mar 2013
Location: Southern Oregon
Posts: 10,384
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Re: 1966 283 stock compression??
Around 140-150.
__________________
1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw |
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09-27-2016, 03:36 PM
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#6 |
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Registered User
Join Date: Mar 2010
Location: thomastown mississippi
Posts: 1,261
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Re: 1966 283 stock compression??
Yeah my 283 had true flat tops w/ only two valve reliefs in them & shim gaskets.
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