Re: Fuel grade question...

Posted by Owen_Dyneto On 2012/8/14 23:12:57

I don't think any of the straight eights need premium from the perspective of compression ratio/knock

I'd make one exception to Pat's statement above; the 54 "359" engine at 8.7/1 generally wants premium or at least mid-range gasoline, and even more so if the cylinder head has been replaced with a 327 or 288 head.