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11-23-2013, 02:47 AM
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#1 |
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Registered User
Join Date: Jul 2012
Location: United States
Posts: 268
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Timing spec for 1986 C30, carb'd 454 ??
What should the ignition timing be set to for an 86' C30 dually crew cab, carb'd 454, TH400?
Thanks,
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86' C30 Dually Crew Cab Ranch truck, carb'd 454, TH400, towing a slant load 4 horse trailer. |
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11-23-2013, 04:08 AM
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#2 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Timing spec for 1986 C30, carb'd 454 ??
Do you have to pass emissions?
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377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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11-23-2013, 10:18 AM
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#3 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Timing spec for 1986 C30, carb'd 454 ??
Isn't this one that should be set at 0? because the computer controls it from a "known" starting point.
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Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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11-23-2013, 10:36 AM
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#4 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: Timing spec for 1986 C30, carb'd 454 ??
No computer or feedback carb on the C-30. (C-10, yes. C-30 also no cats and leaded fuel legal, least on mine)
JBD, 4* at 700 rpm for auto and manual, is what's posted on my aircleaner. IIRC, I'm actually between 12-14*
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
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11-24-2013, 01:42 AM
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#5 |
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Registered User
Join Date: Jul 2012
Location: United States
Posts: 268
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Re: Timing spec for 1986 C30, carb'd 454 ??
Thanks everyone.
Yes, have to pass smog but not for another year. Donut - same here, no cats, no computer carb.
__________________
86' C30 Dually Crew Cab Ranch truck, carb'd 454, TH400, towing a slant load 4 horse trailer. |
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11-24-2013, 01:47 AM
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#6 |
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Registered User
Join Date: Jul 2009
Location: washington
Posts: 4,178
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Re: Timing spec for 1986 C30, carb'd 454 ??
Set it about 12* then. When you go to emissions retard it then
__________________
377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511 |
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