I have a 1959 327/350hp 4 speed and not sure correct additives needed with unleaded gas. Can anyone advise correctly as it seems everyone has their own ideas

Asked by May 16, 2014 at 12:26 PM about the 1959 Chevrolet Corvette Convertible Roadster

Question type: Maintenance & Repair

I am trying to find out specifically what is the correct additives for a 1959 corvette
327/350hp so when I fill up with unleaded I have no issues.

2 Answers

78,305

The classic cars guy out here all use sta-bil marine, the add in a lead substitute if their engines haven't been modified for unleaded fuel. If it is a 350 horse engine then you really need high test fuel, you still might have to add some octane booster to keep it from pinging.

1,175

Since it is not the original engine, it might have hardened valve seats and not need any lead substitutes. It also might have reasonably low compression and not need high octane fuel. I run regular unleaded fuel in my Vette with no trouble at all.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Chevrolet Corvette Questions

Chevrolet Corvette Experts

#1 John Carson
John Carson
Reputation 2,040
#2 carGrrl
carGrrl
Reputation 1,340
#3 Tom Demyan
Tom Demyan
Reputation 1,180
View All

Related Models For Sale

Used Mercedes-Benz SL-Class
112 Great Deals out of 3,431 listings starting at $1,500

Used Cars For Sale

2017 Chevrolet Corvette For Sale
7,462 listings starting at $43,498
2016 Chevrolet Corvette For Sale
37 Great Deals out of 2,985 listings starting at $44,900
2015 Chevrolet Corvette For Sale
39 Great Deals out of 926 listings starting at $41,986
2014 Chevrolet Corvette For Sale
31 Great Deals out of 947 listings starting at $38,999
2013 Chevrolet Corvette For Sale
26 Great Deals out of 437 listings starting at $25,615