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#1 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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BB or SB what the hell?
I know this is going to get me flamed something feirce, but how does one tell the difference between a big block and small block other then the size? or is it based on size? I have 350. is that big or small?
flame away ![]() broken_down? PS. before you start flaming me.. remember this. " We all had to start by asking questions too..LOL" ![]()
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#2 |
Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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broken down, your 350 is a small block. No flamin
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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#3 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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how do you tell the difference?
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#4 |
Registered User
Join Date: Aug 2001
Location: Santa Fe Springs, CA,USA
Posts: 1,579
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Personally, I usually notice in the size of the valve covers. As far as displacement is concerned (350,454,etc), I've just picked it up as Ive gone along. Someone here will be able to tell you better than I can.
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70 shortbed stepside "Schleprock" 350 w/TH400 rallys and BFGs -We can rebuild it, we have the technology-lower,shinier,faster |
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#5 |
Registered User
Join Date: Mar 2003
Location: Northern Illinois
Posts: 2,181
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Well, side by side, the big block is definitely MUCH bigger.
If you don't have them side by side, check the valve covers. Small blocks have 4 bolt, symmetrical valve covers and big blocks have 5 bolt, asymmetrical valve covers. Also, Chevy made specific displacements. 307, 350, 400 are all small block. 396, and anything OVER 400 are all big block. This gets confusing if you talk about oddball sizes that people make for themselves, but standard sizes were all like this. After you stare at the engines for a while, it will be second nature. Brian |
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#6 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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sweet thx for helping me out. apperiated.
![]() ---broken_down?
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#7 |
Don't say "Oops!", Doctor
Join Date: Nov 2003
Location: Houston, TX
Posts: 677
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Here's a quick reference I just threw together for what it's worth. I don't claim to be any kind of expert. I just grabbed an opportunity to give back to the board a little bit. I'm like paintpyro in that I usually notice the valve covers first.
Chevy Small Blocks 262 - 4.3l (2)(3) 265 - 4.3l (2)(3) 267 - 4.4l (2)(3) 283 - 4.6l 302 - 5.0l (1) 305 - 5.0l (2) 307 - 5.0l (2) 327 - 5.4l 350 - 5.7l 400 - 6.6l Chevy Big Blocks 396 - 6.5l 402 - 6.6l 427 - 7.0l 454 - 7.4l 502 - 8.2l Engines in bold are generally the most common and popular for build-ups. There's plenty of room for disagreement on that, though. Also, this list does not include many of the popular crank/bore combinations that engine builders like such as the 383 (350 block bored .030 over with a 400 crank and balancer). (1) Rare 1967-69 Z/28 engine. Can be made with a 283 crank in a 327 block as I recall. (2) Not terribly desirable, but can be built hella strong (3) Oddball I also just edited to include ACTUAL liter displacement. Funny how you don't realize just how much bigger those big blocks are until you see the liter numbers. Personally, however, I friggin hate liters as a displacement unit.
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'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list Last edited by shuttermutt; 11-04-2003 at 06:52 PM. |
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#8 |
Senior Member
Join Date: Dec 2001
Location: Redding,CA...USA
Posts: 4,736
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look at the headers...big block has 4 equally spaced tubes...a small block has the 2 center cylinders closer
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It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA |
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#9 |
RUNN over AGAIN!!!
Join Date: Jun 2003
Location: Big Spring, Texas
Posts: 505
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67-72 TRUCKS ROCK 70 SWB shaved and a 72 front clip.and a poly tank. Peep mirrors and a BIG BLOCK 468 in the making. XNXNXNXNXNXNXNXNXNXNX ,/. EMAIL ME HERE!, Dont pm me please ,/. |
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#10 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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No flamin here is a small block pic for you ... Just remember there are no dumb question's only those no asked I remember when I knew very little about automotive related thing's..
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#11 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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frenchblue72: do yu have disc brakes on your truck?
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#12 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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And here is my big block
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#13 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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Yes I have disk brake's.. The first pic is my blazer and the 2nd pic is my 2wd these both are 72's.. I also have a 69 that I bolted a 72 disk brake clip onto very easy mod...
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#14 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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so if you have a poerbooster you have discbrakes?
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#15 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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Not alway's the case.. The power booster is just to supply vaccum assist to the brakeing effort.. You can have regular disk brake's with out the power assist.. Someone please correct me if I am wrong..
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#16 | ||
Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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hmm wish I had a pic of disc brakes. but thx for the info bud.
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#17 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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What pic would you like to see???? Also there is a thread going right now on disk brake swapping ,lot's of good info for you to read if you are considering the swap..
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#18 |
Registered User
Join Date: Jan 2003
Location: Seattle WA
Posts: 1,466
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You know...not to get off topic, but this is a fine example of why this forum is so successful......if something like this (no offense) would have been posted on any other forum, I would have needed a kevlar suit and fire helmet just to log on.
Cool guys.....
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FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection |
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#19 |
Top of the foodchain
Join Date: Oct 2003
Location: 3.5 miles from Mile Hi Stadium
Posts: 127
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Hey FrenchBlue,
that's the biggest air cleaner I've seen!!!! What is the dimensions 24" x 10" thick??? I said god damn.
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1970 K-10 4x4 1975 Jeep CJ-5 4x4 1990 Jeep XJ 4x4 Smell the Magic! |
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#20 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Frenchblue72- What are you going to use for exhaust on that big block? Looks like you have it sitting on 6 cylinder mounts. I've never been able to find any header or manifold that will work in that scenario.
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I'm on the Instagram- @Gearhead_Kevin |
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#21 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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HERES MY BIG BLOCK
Last edited by rage'nrat638; 07-12-2007 at 07:08 AM. |
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#22 |
Registered User
Join Date: Jan 2003
Location: Tampa, Florida
Posts: 141
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Well not as nice as rage'nrat638, but still its mine. Here is a pic of the 454 in my 67. We cleaned and painted the engine compartment and put all of the wires and hoses in tubes.
Thanks......Joey
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67 C20 LWB 454 BB THD 400 97 Jeep Wrangler 4cyl 5sp Last edited by padreisla; 11-04-2003 at 09:46 PM. |
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#23 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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Well not as nice as rage'nrat638, but still it mine
HEY THATS MY 85... I JUST WISH MY 69 HAD A BIG BLOCK.... I JUST GOT A LITTLE 355 ![]() AND BY THE WAY YOURS LOOKS SWEET ![]() |
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#24 | |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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Quote:
You really appreciate this fourum when you log onto other car boards and see how everyone treats each other....everyone over here gets along just fine (besides the political BS forum, and it is even pretty civil) Nothing wrong with basic questions.....no one was born with a knowlegde of Chevy motors ![]()
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#25 |
Watch out for your cornhole !
![]() Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
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Expanding on what bpmcgee said, I went out to the garage wall and snapped a couple of pics of the two. By the way, the big block has 7 bolts per cover, not 5.
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I'm on the Instagram- @Gearhead_Kevin |
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