327 small journal vs large journal? - Page 3 - Chevelle Tech

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post #31 of 33 (permalink) Old Jun 8th, 09, 9:59 PM
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Larry Joe
 
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Re: 327 small journal vs large journal?

Paul dude I apologise I got carried away did not mean to hijack your thread.
I will shut up I was interested in the thread though just had some questions.

blubu
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post #32 of 33 (permalink) Old Jun 9th, 09, 8:11 PM
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Paul
 
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Re: 327 small journal vs large journal?

blubu,

We are fine and it's not my thread.

pdq67

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post #33 of 33 (permalink) Old Jun 9th, 09, 8:24 PM
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Butch
 
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Re: 327 small journal vs large journal?

Quote:
Originally Posted by Rich-L79 View Post
And 4-bolt main blocks have been known to crack easier in the mains webbing. Small journal 327 were never offered in a 4-bolt block because it just wasn't needed. How many 327's have you ever heard of that failed because they were a 2-bolt block instead of a 4-bolt block? Most of the 62-67 327s were also built using high nickel content blocks and as such have proven to be overall more durable than many of their 350 and larger descendants.
In an 010 4 bolt large journal block i would use "Main Studs" VS "Main Bolts" as its stronger and in my opinion easier on the main webbing.

In my opinion an 010 block is good for high HP with main studs and filled with Hardblok. On street or roundy round you need some better caps such as Milodon

On a small journal block, fill up to waterpump holes with Hardblok and run Milodon splayed caps and it will handle 600-650hp from a 327 turning 9000rpm

Who ever posted the other question, yes you can use the bearing spacer to put a small journal crank in a large journal block. Be AWARE that the machine shop will have to line hone the block and will need your main bearings and spacers to line hone the block and fit them to the block - makes a difference

There is less friction in a small journal crank, as to the old wise tale about revving quicker, i dont think so

They did make large journal 327 forged steel cranks, i have one
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