02-13-2018, 01:51 PM

lust4speed lust4speed is offline

Ultimate Warrior

Join Date: Jul 2002

Location: Yucaipa, SoCal

Posts: 8,836

Quote:

Originally Posted by tom s

With our crap gas and where you live I would not push CR past 9.5.Im sure your avg summer temps are over 100.JMO,Tom

I'd even lower that to 9.3:1 with the great state of california (lower case on purpose) garbage fuel they call gas. Lots of engines built around here for comparison, and anything higher than 9.5 gets the can of marbles going under the hood regardless of timing tweaks and carb jetting when the temps and fuel take a turn for the worse. Bart stuck to 9.1:1 with his 421 build and he won't be hurting for horsepower.

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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 Catalina Safari Wagon.

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