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i bought a camaro with a 327 in it and the heads have a casting number that ends in 545 the have screw in studs with guide plates. they have a strange marking on the end of the heads it looks like two power pack points side by side. any ideas? thanks jerry
 

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I have seen many different reports such as:

330545.....73......350..........76cc chamber, 2.02/1.60

330545 1973 350 76cc chamber 2.02/1.60

1971-75 330545 307,350 1.72 1.5001 74 cc

330545.....73......350..........76cc chamber, 2.02/1.60

330545 1971-75 307/350 1.72 1.5 74 cc



The only agreement looks like big chamber smog head with any size valves.
 

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Decent head if you blend the bowls and open the runners.....
 

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NOT for a 327!!!

You will need to run 350hp/327 domed pistons to even begin to have any compression if they have big smog chambers, imho.

Now, I don't think so, but if by chance they are double-hump 68 cc chambered heads, then install them along w/ Fel-pro's #1094 shims and go! Should be around 9.5 to 1 CR'd...

pdq67
 
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