Bbc Related & Links And Useful Info

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
a few useful links,
and sub links
videos, and tips
to look over

yeah, increased displacement helps and building a killer BBC old school,
for your car can be both cost effective and produce impressive results
some of the most effective, cost per hp and efficient combo's ,
will be the 496 displacement and if you have access to the correct block,
the larger bore 540 BBC combos.
nothings cheap to build but a very impressive and durable,
over the longer term, power plant can be built.
do the required research, and stick to a known well proven well documented combo.
both the 496 and 540 combos are built,
with the 4.25" stroke (FORGED 4340 STEEL crank )
and both usually use the 7/16" ARP rod bolt 6.385" rods,
and built for street performance use,
generally the 300-345cc intake ports,
both generally use the 10.5:1-12.5:1 compression ratio,
and are generally built with a cam in the 245-250 intake lobe duration at .050 lift range,
matched to a 3200 rpm stall and a 3.73:1-4.11:1 rear gear ratio
obviously do the required research before spending cash,
but 600-680 hp, and similar torque is not hard to reach or exceed, N/A
with proper planning, and parts selection ,and higher quality well matched components.
slap a turbo or centrifugal super charger on a well designed 496-540 bbc
and cracking 800 ft lbs and 1000 hp has been done frequently especially if supercharged or nitrous are selected.
I've built dozens of impressive 377-383-406 SBC, engines,
that powered cars into 11 and 10 second 1/4 mile times
but they are not even in the same league with the feel ,
or sound of a car powered by a high compression 496-540 BBC engine.
regardless of displacement you should try to get a BBC to produce about,
1.3 ft lbs of tq and 1.35 hp per cubic inch of displacement N/A as a goal
396blk2.jpg
with correctly matched parts this is generally something you can
achieve
reading links helps reach that goal

1-chevrolet-427-big-block.jpg


you should keep in mind every choice made is a compromise in some areas, planning is critical, but reality can bite you in financial the ass.
incremental gains through minor mods while surely possible and yes proven, to work,but adding those mods,
are at some point ,mods to the engine,or transmission, that are becoming rapidly more, expensive and thus restrictive to completion of a durable & functional engine than the benefits are to the overall build, those mods may produce minor and documented gains, but the minor gains produced are far out weighted by the cost of the mods, especially in a daily drivers engine, things that make sense in a formula 1 or NASCAR engine build, are cost prohibitive to do on a street car, simply shedding weight on the car or improving the aerodynamics, may be far cheaper and result in greater performance.
I've built a few dozen 489-496 BBC engines in the past for guys with novas, camaros chevelles etc, that had visions of having a 10 second or faster car on the street, and the results of having a significantly more powerful engines always resulted in the need for mods like suspension mods,
like traction bars, air shocks, bigger tires, bigger brakes, better engine cooling systems, new stronger differentials, etc. that they may have never considered, that were required to make the car handle correctly, this is never a cheap hobby, but at some point there's a limit to what your wallet will tolerate and how long you want to deal with a car who's engine is (STILL UNDER CONSTRUCTION SO I CAN'T DRIVE IT YET)

http://garage.grumpysperformance.com/index.php?threads/another-496bbc.5123/




http://garage.grumpysperformance.co...-calculators-and-basic-math.10705/#post-72061

http://garage.grumpysperformance.com/index.php?threads/big-block-chevy-info.710/#post-990

http://garage.grumpysperformance.co...-about-your-potential-dream-bbc-combos.14607/


http://garage.grumpysperformance.co...od-rod-length-too-stroke-info.510/#post-10311

http://garage.grumpysperformance.com/index.php?threads/picking-a-cam-for-street-strip-496-bbc.13384/

http://garage.grumpysperformance.co...esting-info-on-a-big-block-turbo-build.10680/

http://garage.grumpysperformance.co...le-turbo-all-steel-496-bbc-8-81-157mph.10615/

http://garage.grumpysperformance.com/index.php?threads/turbo-big-block.6835/





do yourself a favor.. buy this book, its full of useful info you can use

Reher-Morrison Championship Engine Assembly: Robert Colesworthy: 9780972343282: Amazon.com: Books

Reher-Morrison Championship Engine Assembly [Robert Colesworthy] on Amazon.com. *FREE* shipping on qualifying offers. Reher-Morrison Championship Engine Assembly
www.amazon.com
51Dfu8o7JtL._SY448_BO1,204,203,200_.jpg




 
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example parts list

cam
https://www.summitracing.com/parts/cro-01405

heads
https://www.airflowresearch.com/335cc-bbc-rectangle-port-cylinder-head/

short block
https://www.shafiroff.com/chevy-pump-gas-short-block/540-short-block-street.php

induction
https://www.holley.com/products/fue.../sniper_efi/sniper_stealth_4500/parts/550-843

https://documents.holley.com/199r11322r.pdf

https://www.holley.com/products/eng...ake_manifolds/cast/single_plane/parts/300-564
 
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heres some calculators you might use























gear spread sheet that comes in handy THANKS TO 1FATGMC




HERES OTHER INFO LINKS

















a few resources to allow you to calculate the ideal results
http://www.tmossporting.com/tabid/1805/Default.aspx

heres some differant calculators

http://www.kb-silvolite.com/calc.php?action=comp2

http://www.wallaceracing.com/dynamic-cr.php

http://www.smokemup.com/auto_math/compression_ratio.php

http://not2fast.wryday.com/turbo/com...pressure.shtml
average the results
 
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not everything you see in videos will be helpful or useful,
but the more info you have the better prepared you'll be to build a decent engine.
btw theres zero benefit in durability or power in peak oil pressure over 65 psi,
so try for idle oil pressure at about 25-30 psi MINIMUM, and you don't need more than 65 psi PEAK oil pressure,
but peak oil pressure up to maybe 75 psi won't hurt anything either, its oil flow volume not pressure thats most important.

https://www.youtube.com/watch?v=XfZvNu940ns



 
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link too bore vs stroke info on hundreds of engines ,
Id point out one very common mistake I see made is guys ignoring the addition of a 7-8 quart baffled oil pan,

and ideally a windage screen,as this has a very noticeable effect on increased engine durability
http://users.erols.com/srweiss/tablersn.htm

http://garage.grumpysperformance.com/index.php?threads/big-block-chevy-info.710/#post-60300

http://garage.grumpysperformance.co...-displacement-street-engine.10961/#post-48359

http://garage.grumpysperformance.com/index.php?threads/tall-deck-big-block-related-threads.10391/

http://garage.grumpysperformance.com/index.php?threads/which-496-bbc-engine.12291/#post-60423

http://garage.grumpysperformance.co...g-block-head-comparison.319/page-2#post-56649

http://garage.grumpysperformance.com/index.php?threads/build-a-496-stroker-bbc.101/#post-49427

http://garage.grumpysperformance.com/index.php?threads/block-choice.10472/#post-43984

http://garage.grumpysperformance.com/index.php?threads/scat-cranks-related-info.10930/#post-47993

http://garage.grumpysperformance.co...apless-top-piston-ring-sets.10555/#post-44980

http://garage.grumpysperformance.com/index.php?threads/block-prep.125/page-2#post-58033

http://garage.grumpysperformance.co...-on-the-cheap-well-to-start.11739/#post-55365

http://garage.grumpysperformance.com/index.php?threads/what-big-block-is-it.11655/#post-54494

http://garage.grumpysperformance.com/index.php?threads/scat-cranks-related-info.10930/#post-47993

http://garage.grumpysperformance.co...-15-years-later-after-long-term-storag.10443/

http://garage.grumpysperformance.co...g-block-pushrod-guide-plates.4596/#post-52034

http://garage.grumpysperformance.com/index.php?threads/build-a-496-stroker-bbc.101/#post-49427

http://garage.grumpysperformance.com/index.php?threads/another-496bbc.5123/page-2#post-49183

http://garage.grumpysperformance.co...-calculators-and-basic-math.10705/#post-72061

http://garage.grumpysperformance.com/index.php?threads/another-496bbc.5123/

http://garage.grumpysperformance.com/index.php?threads/picking-a-cam-for-street-strip-496-bbc.13384/

http://garage.grumpysperformance.co...-car-craft-magazine-big-bang-big-block.10830/

http://garage.grumpysperformance.com/index.php?threads/striders-540bbc.1356/

 
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cycl54.png

this has never been a cheap or easy hobby and the more you learn, the more you realize there's always a situation where you have just upgraded several components only to find that that upgrade resulted in the need to , upgrade some other system , like the ignition, brakes, cooling or drive train durability.
you'll always find you are forced to learn new skills and upgrade the quality and durability of parts if your intention is to vastly increase the cars power, high speed stability, braking, cooling and over all driveability, especially if you think racing against similar cars at higher speeds is you goal.

you might not initially realize all the mods that a true performance upgrade requires if its done correctly, and yeah, its always going to be much more expensive than you might have initially thought as there's alway incidental but required upgrades.
constant research on your options and carefully balancing the potential performance against the potential cost and difficulty in matching all the components, and verifying they fit and function properly,
as to not compromise the max performance, can at times be rather difficult, especially when you will be forced to conclude there's always the need to do at least some custom parts fabrication work' there's almost zero chance for an example that you can install a tall deck,BBC engine in lets say a 1996 corvette without having custom motor mounts, transmission mounts a upgraded rear differential, a custom exhaust and custom headers, and obviously installing better brakes more gages, a much bigger and more efficient cooling system, an oil cooler, a transmission cooler and a dozen other upgrades.

you should keep in mind every choice made is a compromise in some areas, planning is critical, but reality can bite you financial in the ass.
incremental gains through minor mods while surely possible and yes proven, to work,but adding those mods,
are at some point ,mods to the engine,or transmission, that are becoming rapidly more, expensive and thus restrictive to completion of a durable & functional engine than the benefits are to the overall build, those mods may produce minor and documented gains, but the minor gains produced are far out weighted by the cost of the mods, especially in a daily drivers engine, things that make sense in a formula 1 or NASCAR engine build, are cost prohibitive to do on a street car, simply shedding weight on the car or improving the aerodynamics, may be far cheaper and result in greater performance.
I've built a few dozen 489-496 BBC engines in the past for guys with novas, camaros chevelles etc, that had visions of having a 10 second or faster car on the street, and the results of having a significantly more powerful engines always resulted in the need for mods like suspension mods,
like traction bars, air shocks, bigger tires, bigger brakes, better engine cooling systems, new stronger differentials, etc. that they may have never considered, that were required to make the car handle correctly, this is never a cheap hobby, but at some point there's a limit to what your wallet will tolerate and how long you want to deal with a car who's engine is (STILL UNDER CONSTRUCTION SO I CAN'T DRIVE IT YET)
 
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here's some calculators you might use
from a cost and parts availability vs the potential power levels you can generally expect there's
several BBC engine sizes that have consistently proven to perform rather well

if properly matched components are used you can generally expect to get nealy 1.3hp and 1.35 FT LBS OF TORQUE per cubic inch of displacement N/A obviously use a turbos nitrous or superchargers can significantly boost power

the more common larger displacement combos ,these are
468 cid =454 .060 over bore stock 4"stroke crank
496 cid =454 .060 over bore + a 4.25" stroke crank
540 cid= 4.5" bore + a 4.25" stroke crank
572 cid=4.5" bore + a 4.5" stroke crank
604 cid=4.5" bore + a 4.75" stroke crank
632 cid=4.6" bore + a 4.75" stroke crank























gear spread sheet that comes in handy THANKS TO 1FATGMC






HERES OTHER INFO LINKS

















a few resources to allow you to calculate the ideal results
http://www.tmossporting.com/tabid/1805/Default.aspx

here's some different calculators

http://www.kb-silvolite.com/calc.php?action=comp2

http://www.wallaceracing.com/dynamic-cr.php

http://www.smokemup.com/auto_math/compression_ratio.php

http://not2fast.wryday.com/turbo/com...pressure.shtml
average the results
 
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