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Old 11-18-2019, 12:41 AM   #1
Ziegelsteinfaust
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Line bores

I have a old service replacement 327 small journal block I have been trying to unload.

Well I also have a 400 crank, and a bunch of other speed parts.

So can I line bore a 327 small journal block to large journal?

I know I can not turn the crank to small journal status. Just thought I could use what I have, and make it what I want.
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Old 11-18-2019, 05:57 PM   #2
cadillac_al
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Re: Line bores

You should be able to trade it for a newer block easily. I'd make a 302 out of it for my Camaro.
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Old 11-18-2019, 06:03 PM   #3
Ziegelsteinfaust
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Re: Line bores

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Originally Posted by cadillac_al View Post
You should be able to trade it for a newer block easily. I'd make a 302 out of it for my Camaro.
It has been on craigslist several times with no calls
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Old 11-18-2019, 07:28 PM   #4
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Re: Line bores

Re list it with Al's idea and I'll bet it gets more attention.
Who doesn't like a 7000 rpm small block Chevy?
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Old 11-18-2019, 10:07 PM   #5
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Re: Line bores

nice built 302 GM engine in a nice little street machine to whoop on ford 302 units would be so fun .

i was in a friends 99 ls1 / 6 speed camaro and passed a friend in his TRUE Z/28 302 car and he whooped my arss with out even trying . . . .
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Old 11-18-2019, 11:23 PM   #6
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Re: Line bores

If in your 'other speed parts' you happen to have a 283 crank, you have the basics for a 302. I have a set of forged 302 pistons and a forged 283 crank, but have not been able to find a reasonably priced SJ327 block. Everyone around here thinks they're made of gold.
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Old 11-19-2019, 11:46 AM   #7
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Re: Line bores

Set up right I don’t think a tunnel ram needs lots of cubes.
Buddy of mine runs a hi-ram on his 327.
Some good info on hotrodders about set ups.

https://www.hotrodders.com/forum/cam-523737-3.html
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Old 11-19-2019, 02:38 PM   #8
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Re: Line bores

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Originally Posted by geezer#99 View Post
Set up right I don’t think a tunnel ram needs lots of cubes.
Buddy of mine runs a hi-ram on his 327.
Some good info on hotrodders about set ups.

https://www.hotrodders.com/forum/cam-523737-3.html
Mine is not the best for the street, and matches the heads I have which are not the best for the street. So the cubes is to help it deal with the parts I have.

I got the Holley Dominator tunnel ram with dual offset carbs.

If I had a Wieland it would not be nearly as dependent on cubic inches to run decent.

So I have to accommodate the best I can which is a great cam, and cubic inches to tame the beast the best I can. I will use dual Holley terminator tbi's to make it livable.
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Old 11-19-2019, 02:54 PM   #9
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Re: Line bores

Gotcha!
Two similar but different beasts!
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Old 11-29-2019, 01:15 AM   #10
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Re: Line bores

I think some sbc bottom cylinders were not machined for the counterweights on the crank.IDK when they changed but someone here will know.
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Old 11-29-2019, 10:29 AM   #11
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Re: Line bores

Its the same as a 350 block, and those weights clear. Won't have any issues with a 283 crank.
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Old 12-07-2019, 02:22 PM   #12
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Re: Line bores

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Originally Posted by b454rat View Post
Its the same as a 350 block, and those weights clear. Won't have any issues with a 283 crank.
A small journal 327 and a 350 block are not the same
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