dimension difference between big and small block chevy

 
Old 06-21-2009, 06:36 AM
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fsdragster
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Default dimension difference between big and small block chevy
besides the weight of the big block is the overall width or length different between them. car had a small block with front plate and looking to go bigblock. thanks
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Old 06-21-2009, 07:43 AM
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Tod74
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They are a lot wider. It is the cylinder heads more so than the block.
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Old 06-21-2009, 07:57 AM
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Drtmod5
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They are also @ 3-4" longer in front of motor mounts. I switched mine a couple seasons ago & everything bolts up the same except the front is now closer to the radiator.
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Old 06-21-2009, 08:47 AM
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fsdragster
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so the clearance to the firewall is the same its the front that changes. my car came with a small block plate. do i alter that or just buy a new one
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Old 06-21-2009, 08:59 AM
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hammertime
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Originally Posted by fsdragster
so the clearance to the firewall is the same its the front that changes. my car came with a small block plate. do i alter that or just buy a new one
you'll have to buy new
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Old 06-21-2009, 11:12 AM
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desoto30
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^^ & move it forward 2"
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Old 06-21-2009, 11:14 AM
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Originally Posted by desoto30
^^ & move it forward 2"
x2 they are 2 " longer
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Old 06-21-2009, 11:17 AM
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desoto30
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Just thinking, sometimes you are able to cut out the front plate to accomodate the BB. sometimes not depends how the first is made.
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Old 06-21-2009, 02:58 PM
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fsdragster
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THANKS FOR ALL THE EXPERT ADVISE. HAPPY FATHERS DAY TO ALL. FRANK
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