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04-20-2006, 09:17 PM
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#1 |
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Registered User
 
Join Date: Jan 2006
Location: Warrington, PA
Posts: 403
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Fuel Octane
what type of fuel are you guys running in these old trucks? I have a stock 307 v8. I have been experiencing valve noise when accelerating in 2nd and 3rd gears. would a higer octane gas help improve this problem or could this be something else?
Thanks rick |
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04-20-2006, 09:19 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Fuel Octane
Wait untill you are almost out of fuel, and dump 5 gallons of mid grade... if it still does it, then wait till your almost out, and pour in 5 gallons of liquid gold (hi test)
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04-20-2006, 09:28 PM
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#3 |
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Registered User
Join Date: Jan 2006
Location: Warrington, PA
Posts: 403
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Re: Fuel Octane
thanks I'll give it a try
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04-20-2006, 10:52 PM
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#4 |
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Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: Fuel Octane
You could try runiing a 180 degree stat during the warmer weather, might help a little. A stock 307 should be able to run 87 octane, they do seem to have a fair amont of compression for a stock engine. Could set timing back 2 degrees and see what happens. Around here they sell 89 octane gasohol (E10) for less than plain unleaded.
__________________
1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 |
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