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305 to 383

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305 to 383 - 5/5/2008 11:41:07 PM

DixieD

Posts: 15
Joined: 5/5/2008
Status: offline

Hello all. I'm new here and lookin for some info. I'm driving a 1988 Caprice, and I'm about to have a 383 put in (from a stock 305). I am no pro, but I am pretty sure I have a 1 piece rear seal (I think that started in 87), but I'm not sure if I have a 2 or 4 bolt main block. Does anyone know? Is there an easy way I can find out? Honestly, I'm not even sure what to look for. Thanks in advance for your time and help.

-Dixie

Post #: 1

RE: 305 to 383 - 5/6/2008 2:32:08 PM

DixieD

Posts: 15
Joined: 5/5/2008
Status: offline

OK, kewl. I found out on another forum that the other engine will work either way

(in reply to DixieD)

Post #: 2

RE: 305 to 383 - 5/6/2008 9:36:16 PM

74chevy4life

Posts: 50
Joined: 1/1/2008
Status: offline

Well glad you got your anwser if you get the casting number on the back drivers side of the block you can use this web site http://www.mortec.com/castnum.htm to look up the number and it should say wheather it is 2 or 4 bolt main

(in reply to DixieD)

Post #: 3

RE: 305 to 383 - 5/6/2008 11:43:31 PM

DixieD

Posts: 15
Joined: 5/5/2008
Status: offline

Great-thanks!

(in reply to 74chevy4life)

Post #: 4