Fuel
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
The 390 should run on Pump 93 if the curve isn't too aggressive and timing not too far advanced.....
Some will tell you to run lead additive but it takes tens and thousands of miles to beat the non-hardened seats in......
I ran my 427/400 on pump 93 with 37 degrees total timing and about 16 initial......it was fine but WOT in 4th at 50-60 mph you could hear a little spark knock.....
Jebby
Some will tell you to run lead additive but it takes tens and thousands of miles to beat the non-hardened seats in......
I ran my 427/400 on pump 93 with 37 degrees total timing and about 16 initial......it was fine but WOT in 4th at 50-60 mph you could hear a little spark knock.....
Jebby
Pro
Joined: Aug 2000
Posts: 611
Likes: 168
From: Vancouver B.C.
Try to avoid gas with ethanol. Creates problems with some fuel parts, and if your car sits in storage for an extended period, gas with ethanol goes bad quickly. Also, as mentioned use higher octane fuel.
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 441
From: Wellington, FL
St. Jude Donor '11 thru '25
As mentioned, if the car sits a lot, avoid ethanol gas. Here's station's that sell non-ethanol gas. Be aware there are different octanes with this type gas also.
https://www.pure-gas.org/
https://www.pure-gas.org/
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette & Porsche 911: How Two Icons Conquered the Last 25 Years
Joe Kucinski
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!
Michael S. Palmer
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski