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Old 08-01-2015, 02:20 PM   #72
Greg Reimer 7376
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Join Date: Nov 2008
Location: Glendora,Calif.
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Cool Re: 1965 Impala BBC Stocker Update

You're putting together a great project car,looks like you are having fun doing it.The '65 327/250 horse engine differs from its predecessors(62-64) by way of having 461 heads as opposed to the 896/520 casting. That gives you a big improvement in valve size on the intake, port size, and maybe a little bit of compression.There's five horsepower there and then some.The 300 horse 327 also had the 459 intake and the AFB carb, but the short block and cam are the same.The 459 intake is OK to use on the 250 horse with the Rochester 4 jet,and those improvements can make a big difference.The 65 engine has an advantage with the heads, the 68 engine with the intake and carb,but gives a lot back with the low compression head, around 9 to 1 compression,The cam is a little different in 68 as well.I do believe,however, the big block is the better way to go,especially since you have a proven motor already.Keep up the good work, and keep up the photos!
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