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Can I run Pump gas

I love my Chevy Chevette!
Posts: 1
Joined: 02/08
Posted: 02/21/08 09:02 AM

I am looking at purchasing a newly rebuilt 355 with world product 202 heads and 11:1 pistons. Can I run 91 octain pump gas? I believe the heads are 64cc.  

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Big Block power for the win
Posts: 895
Joined: 08/07
Posted: 02/22/08 06:37 AM

NO! 11:1 is gonna require at least 93 octane, and if you don't have a hot enough ignition system, even the 93 octane won't be enough to prevent detonation.  

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V-6 Camaros rule!
Posts: 49
Joined: 12/07
Posted: 02/22/08 02:24 PM

Have you calculated your actual static and dynamic compression ratios?
11:1 static CR is workable depending on the cam you choose.  

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