What octane for my 83 GT?

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Jan 3, 2010 | 09:09 PM

jaxen

Thread Starter

Joined: Jan 2010

Posts: 12

From: Place

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.

Jan 3, 2010 | 09:10 PM

1988TTOP

4th Gear Member

Joined: Jan 2008

Posts: 1,556

From: nw ohio

87 do u have any mods

Jan 3, 2010 | 09:11 PM

motorman524

MF Informant

Joined: Sep 2006

Posts: 2,690

From: Missouri

87 octane

Jan 3, 2010 | 09:11 PM

jedquist

1st Gear Member

Joined: Nov 2003

Posts: 73

From: United States

87 is fine if you keep the timing low.

Jan 3, 2010 | 09:14 PM

jaxen

Thread Starter

Joined: Jan 2010

Posts: 12

From: Place

all stock except for dual flowmaster..

Jan 3, 2010 | 09:29 PM

AdderMk2

Banned

Joined: Dec 2005

Posts: 22,374

From: Lil' Rhody

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

Jan 4, 2010 | 06:25 PM

lxman1

4th Gear Member

Joined: Jan 2008

Posts: 1,326

From: Louisville, Ky.

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

Jan 4, 2010 | 06:45 PM

AdderMk2

Banned

Joined: Dec 2005

Posts: 22,374

From: Lil' Rhody

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

Jan 4, 2010 | 07:11 PM

PRO50SC

The Rogue Mod

Joined: Feb 2006

Posts: 21,918

From: Maryland Sucka's!!

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

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