68 and 69 327 were large journal 4” bore motors. They were base motors in Camaro and Nova through late 69 when the 307 supplanted tgec327. At least in Camaro. The 307 and 327 were both 3.25”stroke. The 307 is a small bore motor like a 305. Putting a 350 crank in makes for a 330 something cube striker 307 NOT a 327. Put 307 crank in 350 block is what you are thinking. But 350 makes more sense all the way around from $ and power standpoint. I have a 4 bolt main .030 327 in my Jimmy using a large journal 327 crank and ‘72 4 bolt 350 block. But is build a383 if doing it all again.
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Originally Posted by stsalvage
I like to mention something that has nothing to do with your handling of your truck.If your planing on taking out that 307 and putting in a 350.I think i have a way to save you some money and get a screamer of a engine plus you can keep your truck factory.
In 1966-67 there was a care that had a very Rare motor installed in it.It is the one body that GM did not change over from 1966 to go to the new 1967 body change.It was the Nova.
In 1966 Nova had a very Special motor installed into there car's it was the Large Jernoal 327.
Funny thing is the 307 is a Large jernoal black.Taking a reguler 350 crank and dropping it into a 307 block turns it into a Large jernoal 327 give you wicket RPM'S and horse power
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