What octane for my 83 GT?

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01-03-2010, 09:09 PM

jaxen

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What octane for my 83 GT?

This might be a dumb question but I'm new to the whole mustang and V-8 scene and I've searched but cant find any info. I just picked up an 83 Gt and was wondering what octane to put in it.

01-03-2010, 09:10 PM

1988TTOP

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87 do u have any mods

01-03-2010, 09:11 PM

motorman524

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Posts: 2,690

87 octane

01-03-2010, 09:11 PM

jedquist

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87 is fine if you keep the timing low.

01-03-2010, 09:14 PM

jaxen

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all stock except for dual flowmaster..

01-03-2010, 09:29 PM

AdderMk2

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Quote:

Originally Posted by jedquist

87 is fine if you keep the timing low.

87 is fine even with increased timing. E-10 Ethanol burns different than MTBE fuels that we had been running for years

01-04-2010, 06:25 PM

lxman1

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I can run 12* on 87 octane with no pinging. No ethanol.

01-04-2010, 06:45 PM

AdderMk2

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Quote:

Originally Posted by lxman1

I can run 12* on 87 octane with no pinging. No ethanol.

news flash.. all gasoline at the pump, sold in America.. is E10

01-04-2010, 07:11 PM

PRO50SC

The Rogue Mod

Join Date: Feb 2006

Location: Maryland Sucka's!!

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This will answer your question completely! Check it out!!!
https://mustangforums.com/forum/5-0-...bers-read.html

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