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Old 07-15-2012, 11:59 AM   #1
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Small block big block discussion @ work

Alot of guys in my platoon drive s197 or coyote mustangs (4.6/5.0) and one of my boys referred to his engine as a "small block" and was corrected by another and said its "not a small block, it's considered a MODULAR BLOCK" and arguments erupted hahahah we couldn't find it online it was referred to as both on several sites. Anybody have the official answer? or can provide some insight?
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Old 07-15-2012, 12:12 PM   #2
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Dimension wise mod motors are the same or larger than old school big blocks
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Old 07-15-2012, 02:59 PM   #3
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Re: Small block big block discussion @ work

MODULAR BLOCK is the design of the motor, A 4.6 is small and 5.4 is big, taller deck height.

Big block/ small block refers to the cubic inch of the motor, in the Day 350 c.i. was the dividing line. There was not alot of stroking back then. when Chevy guys started to stroke small blocks to 400 c.i. Most people used the original design of the motor as the guide to it's class. All the small winsor ford motors, 260,289,302 were small blocks, and the Y blocks 352, 390, 427,460 were all big blocks.
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Old 07-15-2012, 03:49 PM   #4
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Quote:
Originally Posted by Gil_T2
MODULAR BLOCK is the design of the motor, A 4.6 is small and 5.4 is big, taller deck height.

Big block/ small block refers to the cubic inch of the motor, in the Day 350 c.i. was the dividing line. There was not alot of stroking back then. when Chevy guys started to stroke small blocks to 400 c.i. Most people used the original design of the motor as the guide to it's class. All the small winsor ford motors, 260,289,302 were small blocks, and the Y blocks 352, 390, 427,460 were all big blocks.
not entirely true man. bc the ls7 the 7.0 in the vettes which is a 427 is a samll block not a big block. just as the 351 comes in small block and a big block both being 351's
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Old 07-15-2012, 03:55 PM   #5
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Quote:
Originally Posted by Rapinator126

not entirely true man. bc the ls7 the 7.0 in the vettes which is a 427 is a samll block not a big block. just as the 351 comes in small block and a big block both being 351's
He also said that people use the original design of the motor to determine it's class. A 351 block is the same size as a stroked 351/427 just different internally.
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Old 07-15-2012, 04:00 PM   #6
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I tend to block out discussions on big block/ small block. Like the first guy said the modular engines are wider than some big blocks of the 70s era. There is stroker kits to put small blocks into higher cubic inches I.e. 302- dart 363. 351- 408+ etc... So regardless we still have a 4.6 and even stroked to a 5.1 it wouldnt refer it as a big block
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Old 07-15-2012, 04:16 PM   #7
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Re: Small block big block discussion @ work

Things and definitions change with generations, But the original def of Big block and Small block had nothing to do with there physical size. I grew up in the 50's and the old 332 ci Chrysler hemi was called a small block. That motor was just as big as the 4.6. At only 281 ci I still call the 4.6 a small block ( have you ever seen a 4.6 with out heads) ? They are soooooo small. the term is small block, not small block and heads.
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