Classic Mustangs List Archive

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Michael Strawn)

How about some thoughts on how much overbore a '68 model 302 Mexican block
can take. I have heard that .060 is too much for the smallblocks, but this
one is .042 over now, has been sitting in a garage for some time and has
pitting on the cylinder walls. Has anyone ever had a 302 bored out that
much and what were the results? Michael Strawn

This read-only message was archived from a public mail list.
Mail From: (email redacted) (John Dettori)

Ford says don't go past 0.040" over.

People do bore 0.060" over, but more than
50% suffer from overheating problems afterwards.
That's because the cylinders are now too close to
the water jackets.

See if you could do just a clean-up hone.
Or ask the machine shop to "seleve" the block.

====================================================================
John Dettori 01 Cobra (4.6l 6A
Sr. Manager 86 SVO (2.3l IT)
KPMG Consulting, Inc. 70 Mach I (351C-4V)
(email redacted) 67 GT350 (289-4V SC)
516 298 7072 67 GT Conv (289-4V)

----- Original Message -----
From: "Michael Strawn" <(email redacted)>
To: <(email redacted)>
Sent: Friday, June 07, 2002 6:07 PM
Subject: [CM] How much can you bore the block?


> How about some thoughts on how much overbore a '68 model 302 Mexican block
> can take. I have heard that .060 is too much for the smallblocks, but
this
> one is .042 over now, has been sitting in a garage for some time and has
> pitting on the cylinder walls. Has anyone ever had a 302 bored out that
> much and what were the results? Michael Strawn
>
> _______________________________________________
> Classic-mustangs mailing list
> (email redacted)
> mix.twistedpair.ca/mailman/listinfo/classic-mustangs

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Ron Cordes)

Maybe its time to consider a new block pretty cheap at 1000 bucks complete
with roller cam and crank and pistons, heck some might even call them
"short" blocks unless you NEED your block.

Ron

If motorcycle's race through your veins click here!
www.goldcoastcycle.com

If a man is called to be a street sweeper, he should sweep streets even as
Michelangelo painted, or Beethoven composed music or Shakespeare wrote
poetry. He should sweep streets so well that all the hosts of heaven and
earth will pause to say, here lived a great street sweeper who did his job
well.
- Martin Luther King, Jr.


----- Original Message -----
From: "John Dettori" <(email redacted)>
To: <(email redacted)>
Sent: Saturday, June 08, 2002 5:49 PM
Subject: Re: [CM] How much can you bore the block?


> Ford says don't go past 0.040" over.
>
> People do bore 0.060" over, but more than
> 50% suffer from overheating problems afterwards.
> That's because the cylinders are now too close to
> the water jackets.
>
> See if you could do just a clean-up hone.
> Or ask the machine shop to "seleve" the block.
>
> ====================================================================
> John Dettori 01 Cobra (4.6l 6A
> Sr. Manager 86 SVO (2.3l IT)
> KPMG Consulting, Inc. 70 Mach I (351C-4V)
> (email redacted) 67 GT350 (289-4V SC)
> 516 298 7072 67 GT Conv (289-4V)
>
> ----- Original Message -----
> From: "Michael Strawn" <(email redacted)>
> To: <(email redacted)>
> Sent: Friday, June 07, 2002 6:07 PM
> Subject: [CM] How much can you bore the block?
>
>
> > How about some thoughts on how much overbore a '68 model 302 Mexican
block
> > can take. I have heard that .060 is too much for the smallblocks, but
> this
> > one is .042 over now, has been sitting in a garage for some time and has
> > pitting on the cylinder walls. Has anyone ever had a 302 bored out that
> > much and what were the results? Michael Strawn
> >
> > _______________________________________________
> > Classic-mustangs mailing list
> > (email redacted)
> > mix.twistedpair.ca/mailman/listinfo/classic-mustangs
>
> _______________________________________________
> Classic-mustangs mailing list
> (email redacted)
> mix.twistedpair.ca/mailman/listinfo/classic-mustangs

This read-only message was archived from a public mail list.
Mail From: (email redacted) (Ezekial)

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>My fastback came with a 73 302 block bored .060 with 260 rods and
>crank. I drove the piss out of that motor for 3years and never had a
>problem other then then normal wear. The motor is worn out now both
>bearings and rings so that is part of the reason for the 5.0 swap. But I
>never ever had an overheating problem with it after I fixed the fan
>problem after I got it. And it seen lots of high RPMs and street racing.



Ezekial (Derrick)
93 F-150 4x4, 351, SC, SB
66 Fastback Stang, 289HP, 4sp
89 Stang 5.0, 5sp, donor for the 66
96 Conv. Stang, 3.8, lil add ons
P3cdo 1000 at 1162, CUSL2-C, 512mb PC-150 Kingmax,
SB Live!, GF3 ti200, NewQ Gold, modded & neon
alt169.com

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Content-Type: text/html; charset="us-ascii"

<html>
<blockquote type=cite class=cite cite>My fastback came with a 73 302
block bored .060 with 260 rods and crank.&nbsp; I drove the piss out of
that motor for 3years and never had a problem other then then normal
wear.&nbsp; The motor is worn out now both bearings and rings so that is
part of the reason for the 5.0 swap.&nbsp; But I never ever had an
overheating problem with it after I fixed the fan problem after I got
it.&nbsp; And it seen lots of high RPMs and street
racing.</blockquote><br><br>
<x-sigsep><p></x-sigsep>
Ezekial (Derrick) <br>
93 F-150 4x4, 351, SC, SB <br>
66 Fastback Stang, 289HP, 4sp <br>
89 Stang 5.0, 5sp, donor for the 66 <br>
96 Conv. Stang, 3.8, lil add ons <br>
P3cdo 1000 at 1162, CUSL2-C, 512mb PC-150 Kingmax, <br>
SB Live!, GF3 ti200, NewQ Gold, modded &amp; neon <br>
<font color="#0000FF"><u><a href="alt169.com/" eudora="autourl">alt169.com</a><br>
</font></u></html>

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