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Easy octane question

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Old Sep 3, 2002 | 01:34 AM
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Default Easy octane question

which one? stock '77 L48. I have been putting midgrade. Should it take prememium instead?
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Old Sep 3, 2002 | 01:44 AM
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Default Re: Easy octane question (jonny4523)

Buy it and try it? If you notice a difference and don't mind the increased cash outflow...do you race?
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Old Sep 3, 2002 | 01:48 AM
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Default Re: Easy octane question (jonny4523)

Your stock compression ratio is below 9.1:1 so anything other than good 'ol regular would be overkill.

I run regular in my 454 with no troubles at all. I did drop the timing though.

Enjoy!
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Old Sep 3, 2002 | 01:56 AM
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Default Re: Easy octane question (73454)

Your stock compression ratio is below 9.1:1 so anything other than good 'ol regular would be overkill.

I run regular in my 454 with no troubles at all. I did drop the timing though.

Enjoy!
yup...regular will do
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Old Sep 3, 2002 | 02:13 AM
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Default Re: Easy octane question (jonny4523)

When I bought my '77 L-48, I always used 93 octane. (I think the owner's manual says something about using premium gas.) When this became too expensive as fuel costs rose a few years ago, I switched to 87 octane and never noticed the difference.
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Old Sep 3, 2002 | 04:46 AM
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Default Re: Easy octane question (jonny4523)

regular is always fine unless u get a knock then u would want to switch to a higher octane
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Old Sep 3, 2002 | 05:38 PM
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Default Re: Easy octane question (sped01)

Regular is for lawn mowers... I have used amoco 93 in our 3.1 minivan for 178,000 mile, NEVER touched the injectors or use even ONE can of any kind of treatment. I can't say that about friends who use Cheap regular in their cars.


[Modified by silvervetteman, 4:38 PM 9/3/2002]
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