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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Block clearancing?

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Old 09-27-2010, 12:45 AM
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Default Block clearancing?
does the block need to be clearanced for a 383 setup? If so how much would a machine shop charge?
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Old 09-27-2010, 01:45 AM
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Originally Posted by ThorsLT1
does the block need to be clearanced for a 383 setup? If so how much would a machine shop charge?
I had it done for 500 cash (balanced, cam bearings installed, cleaned, bored, decked, and clearanced).
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Old 09-27-2010, 05:39 PM
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what about the oil pan do you have to get an aftermarket pan?
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Old 09-27-2010, 05:44 PM
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I had to dent in one of my pan rails just a hair on my stock pan. The Eagle h beams I used in my 383 have bolts that hang pretty low. So to answer your question no. Just may have to BFH it a little.
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Old 09-27-2010, 11:19 PM
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local machone shop here charges $120 to clearance the block on a cnc mill.
Last edited by brucer; 09-27-2010 at 11:30 PM.
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Old 09-28-2010, 11:24 AM
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Originally Posted by ThorsLT1
what about the oil pan do you have to get an aftermarket pan?
I ran an aftermarket pan for the extra oil not the clearance so I can't tell you if it fit.
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Old 09-28-2010, 12:14 PM
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Originally Posted by Fazz73jr
I had to dent in one of my pan rails just a hair on my stock pan. The Eagle h beams I used in my 383 have bolts that hang pretty low. So to answer your question no. Just may have to BFH it a little.
^^ X 2. Stock pan can be used and will clear, just a bit of pan rail adjustment may be needed.
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Old 09-28-2010, 12:21 PM
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It really depends on your rods and rod bolts how much clearance work needs to be done.

My Eagle H-beams would not have needed as much as they did if I went with standard rod bolts or ARP-2000s over the massive L-19s.
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Old 09-28-2010, 03:58 PM
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Not sure what it was to clearance my block but for the magnaflux, hottank, boring .030 over and clearancing for a 383 was 500 bucks
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