What type of gas for 10.9:1 CR?

[RockinZ]

Originally Posted by Cable Slacker

do not know if this will help but I have no vacuum advance hooked up. My initial timing is 36 degrees and total is 38.

I'm pretty new to this stuff. Initial timing at 36? I thought the usual is around 12. Can you explain?

[kenny77]

Originally Posted by bluebetsy02

One would have to deduce from the figures we have from our scales that in fact, 882 heads are not the "light" offerings from GM and in point of fact Vortecs are lighter than the above and hard to believe, but camels are real light as compared to the previous two units..
Now this could all go to "He^^ in a hand basket" if either my scale or Travis' is off a mite.. Kinda interesting to say the least, eh?? Thanks Travis!!
T.

You couldn't be more wrong.

The heads that are called "lightweight castings" are called that because of areas in the head that are not as thick as in others, thus they are more prone to cracking in those areas.
It has nothing to do with the overall weight of the entire head. "Lightweight castings" is mostly a machine shop term that means smog era, crack prone garbage. And 882's = garbage.

[Mwilson]

Originally Posted by RockinZ

I'm pretty new to this stuff. Initial timing at 36? I thought the usual is around 12. Can you explain?

It makes up for soggy response and high duration cam

[bluebetsy02]

If you, by rules, are limited to running heads that came stock with a 1976 350ci, what would you run, recalling the previous parameters that I just mentionned, or would you just yell at the tech man "these are crack-prone smog era garbage".. Ditch'em!! Sometimes by rules n' regulations one has no choice or, mebbee yah jus ain't got dee money and you have to run what you got as eating n' rent is more important than "ditch'em"..
Might be a great topic for Original Drivetrain..
Take care!!