Driveability of high compression cars

[Stuart Adams]

Can you buy high octane fuel in your area?

[Salvatore]

I drive my Z with 10.5 to 1 and have no trouble at all. I mix some of that Jack Podells true lead octane booster with 93 octane. Buy it by the case. Works great. You can get up to 103 octane. Its called: Max Lead 2000. Aviation fuel is iffy in my opinion. JMO

[Stuart Adams]

Call Charley, he probably can get you a discount since he will now be buying Jet A........

[Dave Rifkin]

[ QUOTE ]
I drive my Z with 10.5 to 1 and have no trouble at all. I mix some of that Jack Podells true lead octane booster with 93 octane. Buy it by the case. Works great. You can get up to 103 octane. Its called: Max Lead 2000. Aviation fuel is iffy in my opinion. JMO

[/ QUOTE ]

That's a helpful suggestion. I would have to go to the local dragstrip to get high octane fuel for the car. The lead additive is a more practical solution in my opinion.

[Salvatore]

Works good and is reasonable. You can run CAM 2 or VP but not necessary. Jack Podell (574)232-6430.

[Jacsey 70Z]

I just filled my car up for the winter, we have Turbo Blue 110 Octane leaded at the pump, my car just loves it. Just about passed out when I saw the price it went to recently $5.19 a gallon, so I guess if you don't mind the price drive away!!

[Salvatore]

Jack, Why don't you mix it with 93 octane. You don't need 110 octane. Its not a race car is it?

[@wot]

I have tried various additives etc. with marginal success. Most of them help slightly, and in a pinch you can add some and get to where you are going, driving carefully. If you want to tune and time a hi-compression car correctly, you have to buy race fuel. The engine will run stronger and cooler, not to mention the grin on your face will be bigger. Buy a 55 gal. drum and use all summer.

[Belair62]

Mix Turbo Blue or any other race fuel 110-112 with 93 and just keep your foot out of it or listen to your engine when you do put your foot in it..

[70CitrusZ]

My 70 LT-1 is built with pistons designed to produce 11 to 1 with 64 cc chambers.
Stock solid cam set at .024 and .026 lash
My decks were cut to clean up to parallel, about 7 thou.
I used head gaskets with a .039 compressed thickness.
Before I assembled heads, they were cylinder matched and laid back,and smoothed to eliminate hot spots. After that the chambers measured 61 to 61.5 cc.
I had hardened exhaust seats installed.
So far I have had no problem running 93 octane pump fuel.
Originally I fired it on 100 octane av gas, but found it ran cooler and still without detonation on unleaded 93.
Mark.