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05-21-2003, 11:14 AM
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#1 |
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Registered User
Join Date: May 2003
Location: Chandler, AZ
Posts: 51
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Stupid Question
Okay, here's a stupid question by the newbie. The majority of my wrench turning growing up was on VW engines. What's the difference between a small block and a big block? Quit laughing and just answer!
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Brian '86 C10 Silverado, 350/700 Last edited by Low Truck FNG; 05-21-2003 at 11:29 AM. |
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05-21-2003, 11:41 AM
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#2 |
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Senior Member
Join Date: Apr 2002
Location: Beaverton, OR
Posts: 1,615
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About 100 cubic inches..
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Mitch 1978 Chevrolet Silverado C 10 454 BB, TH400 |
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05-21-2003, 11:42 AM
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#3 |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,824
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Do you mean short block and long block? A short block is block without heads or intake...a long block is a complete block WITH heads and intake.
-Jeff |
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05-21-2003, 12:06 PM
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#4 |
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Registered User
Join Date: Oct 2002
Location: Edmond, OK
Posts: 5,904
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small block 302-400 big block 396-502+ yes they over lap, you can tell the difference by looking at the engines, the big blocks have noticably larger vavle covers/heads.. as well as the block itself. a small block though a v8 looks small in 73-87 engine compartments.
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Jon 1982 Chevy Silverado 350/th350.... RETIRED 1993 Jeep XJ 2 door(Cherokee) 4wd 4.0ltr/AX-15 (5spd)/NP231 .... Oklahoma Roll Call |
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05-21-2003, 12:12 PM
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#5 |
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yeller
Join Date: Oct 2001
Location: Twin Cities
Posts: 13,824
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Oh sure, you edited it on me.
Anyways...what Jon said. 
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05-21-2003, 02:02 PM
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#6 |
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www.73-87chevytrucks.com
 
Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Hmmm, from memory...
BBC specs typical bore size 4.25 max is 4.310" 4.84" bore spacing 9.80" deck height SBC specs typical bore size 4.00" max 4.150" 4.40" bore spacing 9.025" deck height.
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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05-21-2003, 02:09 PM
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#7 |
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Registered User
Join Date: Mar 2003
Location: Northern Illinois
Posts: 2,181
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These guys have done a good job on the technical details. Let me give you the mono-brow perspective:
Small block V8s and big block V8s are different designs of engines. As such, their internal components aren't generally interchangeable. Accessories such as alternators, carbs, distributors, can generally be swapped with a like-type from the other engine, but not much else. Internal parts within a design are generally inter-usable, but you have to be careful with the 400 SBC, because of the siamesed bores and altered water passages. Brian |
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05-21-2003, 03:00 PM
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#8 |
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Registered User
Join Date: May 2003
Location: Chandler, AZ
Posts: 51
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Yes Jeff, I did edit the long block to big block. It just didn't look right after I re-read it. I knew the short and long difference. Thanks for the info guys. That clears it up.
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Brian '86 C10 Silverado, 350/700 |
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05-22-2003, 05:21 AM
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#9 |
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Registered User
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
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You can't pick either of them up like you can a bug motor. Or build one on the kitchen table.
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