boring an original - Team Camaro Tech
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post #1 of 8 (permalink) Old Sep 26th, 03, 02:44 PM Thread Starter
 
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heres a ? that could lead to death , of a #s matching 327.
I have a 67/327-210hp,.30 over.It needs to be cleaned up. Can I go .60 over without destroying the engine? Some say .90 some say NO WAY! others tell me to check nickle content in a chevy book but I have no clue where to find this book. I'm hoping someone has already been through this.
Please help I dont want to end up pulling a DR. kavorkian on my 327.
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post #2 of 8 (permalink) Old Sep 26th, 03, 04:11 PM
 
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Can you go .040 ?
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post #3 of 8 (permalink) Old Sep 26th, 03, 05:01 PM
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Joe, You signed up quick [img]smile.gif[/img] Welcome to the board. search around and have fun!

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post #4 of 8 (permalink) Old Sep 26th, 03, 05:19 PM
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How much of a lip is their just below the deck - where the rings stop? Ask a respectable machinist what they think you can do for your motor. It really depends on how much wear there is and how well centered the casting is.

-dnult

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========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #5 of 8 (permalink) Old Sep 26th, 03, 06:04 PM
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I have a 1969 DZ "010" block that has the same problem. A good machine shop can sonic test the bores for core shift, and give you an opinion as to what you can do. The other option is having the bores sleeved, which I know nothing about. Again, I think a good, reputable machine shop can get you where you want to be.

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post #6 of 8 (permalink) Old Sep 27th, 03, 03:25 AM Thread Starter
 
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Looks like sonic testing is the answer.I believe the lip is to much for .40.thanks everybody for your input. Kevin you were right, great place for good info.
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post #7 of 8 (permalink) Old Sep 27th, 03, 05:10 AM
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I would be very suprised if a 67 block will not go .060" over. The 75-76 and later blocks are made in Mexico; they are a little thinner and have more porosity problems (less likely to go .060) IMO.

Sonic testing will let the machine shop offset the bores slightly so that max thickness remains on the thrust side.

If you want to really get max power out of a 4.060 block you may consider using hard block and doing a short fill. It adds to the cylinder wall strength and improves ring sealing with no adverse cooling problems. My 383 (actually 388) has been 4.060 for 2-3 years now with many 1/4 mile passes and 12k street miles w/o any hard block - its a '72 four bolt casting.

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68 Camaro, E85 powered 427" small block. 9.96 @ 133 MPH, 1.319 sixty foot on motor. 5.92 eighth @ 116 with a 1.42 sixty breaking beams with back tire on the bottle
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post #8 of 8 (permalink) Old Sep 27th, 03, 01:58 PM Thread Starter
 
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Nothing like good old fashioned Chevy horsepower.I'll post my findings incase anyone else comes up with this dilema. [img]graemlins/beers.gif[/img] [img]graemlins/beers.gif[/img]
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