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-   -   Cast Iron manifolds on Super Stock cars (https://classracer.com/classforum/showthread.php?t=81343)

Mark Yacavone 01-22-2022 12:35 PM
Re: Cast Iron manifolds on Super Stock cars
 
Quote:
Originally Posted by 427FE (Post 655957)
Some those early Pontiac manifolds were aluminum as well
You guys did notice how #5 and #7 are split here, right?

Bruce Fulper 01-22-2022 04:18 PM
Re: Cast Iron manifolds on Super Stock cars
 
Quote:
Originally Posted by 427FE (Post 655957)
Some those early Pontiac manifolds were aluminum as well
And they melted rapidly. Pontiac didn't have a good alloy for them . I had a few sets. Melt under the bolt head. Guys would retighten the bolts, squish the flange, loosen, retighten, melt, squish, retighten until junk. Sad. Because the cast iron ones were 78 lbs apiece.


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