Drag Racing ?

Psychojimmy · September 16th, 2007, 02:23 PM

What is the highest octane I should run in a stock 5.0 with exhaust ? And what are the optimal shift points for drag racing on 88 GT Hatch?

sivart · September 16th, 2007, 02:27 PM

highest? you could run 102 if you wanted but around town you can run 87, if you dont have ur timing advanced. shift points....id say shift like around 5000 - 5300

Darrell · September 16th, 2007, 08:14 PM

Anything more than 91-93 octane is only going to hurt your performance. If the engine doesn't need the octane, the additional octane will not help. Octane doesn't add horsepower, it only resists detonation better. Shift around 5500 rpm.

Psychojimmy · September 17th, 2007, 08:29 AM

Cool deal thanks for the input guys!

September 16th, 2007, 02:23 PM	#1
Psychojimmy Regular Join Date: Aug 2007 Location: San Diego,CA Posts: 140	Drag Racing ? What is the highest octane I should run in a stock 5.0 with exhaust ? And what are the optimal shift points for drag racing on 88 GT Hatch?

September 16th, 2007, 02:27 PM	#2
sivart Regular Join Date: Feb 2007 Location: middle GA Posts: 301	highest? you could run 102 if you wanted but around town you can run 87, if you dont have ur timing advanced. shift points....id say shift like around 5000 - 5300 __________________ I just read an article about the dangers of drinking ... And it scared the crap out of me. So that's it............... After today, NO MORE READING.

September 16th, 2007, 08:14 PM	#3
Darrell Feb 08 ROTM 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 7,025	Anything more than 91-93 octane is only going to hurt your performance. If the engine doesn't need the octane, the additional octane will not help. Octane doesn't add horsepower, it only resists detonation better. Shift around 5500 rpm. __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

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September 17th, 2007, 08:29 AM	#4
Psychojimmy Regular Join Date: Aug 2007 Location: San Diego,CA Posts: 140	Cool deal thanks for the input guys!

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