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Old Mar 27, 2021 | 12:03 AM
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Default Octane Boost

I am seriously considering buying a 1970 Corvette LT-1. With 11.0 :1 Does anyone have an octane boost they might recommend?
Thanks in advance.
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Old Mar 27, 2021 | 05:00 AM
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Shouldn't need it Mate. Should run fine on pump gas.
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Old Mar 27, 2021 | 10:02 AM
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What is your concern? To answer your question. Torco.

Last edited by kodpkd; Mar 27, 2021 at 10:16 AM.
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Old Mar 27, 2021 | 11:28 AM
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If you aren't going to be on it, 98 unleaded with some 110 leaded mixed in. If you are going to beat on it, 100% 110 leaded or better. I run 98/100 mix in my L71 with no issues.
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Old Mar 27, 2021 | 11:40 AM
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My LT1 runs fine. Depending on where you live (elevation), you might have to dial the advance back a bit. But if you're lucky to live in a rural area where ethanol free gas is available, use it.
My experience with additives is that they tend to foul plugs. Good luck and enjoy! I would test drive it to see if it actually pings before you buy it. If it does, it is easily remedied, but use it as a bargaining point with the seller.
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Old Mar 27, 2021 | 02:23 PM
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I would try the Torco first before detuning the ignition curve.
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Old Mar 27, 2021 | 03:40 PM
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jbsblownC5 is a Torco dealer here. Just picked up a 6 pack of "Acclerator" boost its 120ish
Stuff in the auto parts store is garbage. When they say "raises it a point" they mean 91. to 91.1 lol
VP or torco is the way to go
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Old Mar 27, 2021 | 04:13 PM
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VP Racing Madditive Octanium is the best I’ve used , stuff works
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Old Mar 27, 2021 | 05:26 PM
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Mine runs fine on 91, (Best I can get here). Took a bit of tuning, advance curve & vacuum advance.
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Old Mar 27, 2021 | 05:48 PM
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Originally Posted by Spowell637
I am seriously considering buying a 1970 Corvette LT-1. With 11.0 :1 Does anyone have an octane boost they might recommend?
Thanks in advance.
I found this an interesting read over in the C1 - C2 section:https://www.corvetteforum.com/forums...-the-same.html
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Old Mar 27, 2021 | 06:12 PM
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I run 93, no issues. May get a little rattle if too much throttle at too low rpm. Mine's a 70 @ 11 to 1.

Last edited by Dirty Dalton; Mar 27, 2021 at 06:13 PM.
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