Bbc Build Advice

I know this topic has been posted extensively, and I am very appreciative of that. I'm having a bit of difficulty sorting through all the material. Even though I can make my way through most repairs I have never built an engine and don't plan to with this project. What I'm looking for is specific advice for this build. I will do my best to detail the project and goals. Thanks much in advance.

1984 Chevy K15 SWB (mostly parts now but have line of site to complete, clean body.
Have 14 bolt semi-float and corp 10 in 4.10 ready to swap in for the factory one wheeled wonder.
I would like to build a 496 based off a 427T. This would be matched to a 700r4 and NP205 combo. Primary use would be cruising...likely to be a pavement queen.

The truck will be on a 6" lift with 38" tires.

I am aware of the general pros/cons of 427t block vs. 454 base block and am drawn to the appeal of the 427t block. I have not secured block yet but know where I can get one.

Performance goals would be 600-ish lb/ft. of torque. Naturally aspirated.

Budget - not defined. I know the tranny choice is going to cost me to get it built reliable enough to handle that kind of power. I want to do this right so am not putting any budgetary constraints in place. That also doesn't mean I plan to be stupid with project cost.

Once again - thanks for everyone's contributions to this site. It's pretty amazing.
 

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
https://www.jegs.com/i/Scat/942/1-91610BI/10002/-1

http://garage.grumpysperformance.com/index.php?threads/piston-related-info.110/

http://garage.grumpysperformance.com/index.php?threads/oil-system-mods-that-help.2187/



for what you have planed Id start with a kit similar to this one,(above)
but youll need the longer connecting rod length,
1/2 stroke + rod length+piston pin compression height,
should roughly equal block deck height,
10.2" block deck 2.125=(1/2 stroke)
compress_image002.gif

plus or minus a few thousandths,
minor adjustments in compression,
due to head gasket thickness and what the piston deck height is are common


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.co...onnecting-rod-rod-length-too-stroke-info.510/

http://garage.grumpysperformance.com/index.php?threads/measuring-rod-and-pin-heights.3760/#post-9968

due to the TALL DECK HEIGHT truck block
https://www.airflowresearch.com/300cc-bbc-oval-port-cylinder-head/
read these links each link has info you might need

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

http://garage.grumpysperformance.com/index.php?threads/big-block-head-comparison.319/

http://garage.grumpysperformance.co...970-427-td-good-for-hot-rod.15319/#post-89493

http://garage.grumpysperformance.com/index.php?threads/496ci-revamped.14642/page-33#post-90411

http://garage.grumpysperformance.co...onnecting-rod-rod-length-too-stroke-info.510/

http://garage.grumpysperformance.com/index.php?threads/scat-cranks-related-info.10930/#post-74729

http://garage.grumpysperformance.com/index.php?threads/427-tall-deck.14430/#post-74499

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/
http://www.amazon.com/exec/obidos/ASIN/1...1234339-0571324
1557882169.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/tg/det...nce&s=books
0912656042.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/tg/det...nce&s=books
0895861755.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/tg/det...nce&s=books
1884089208.01._PE30_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/tg/det...nce&s=books
1557883572.01._PE30_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/tg/det...nce&s=books
0760302030.01._PE_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg

heres some calculators you might use
http://www.angelfire.com/fl/procrastination/motor.html
http://www.thirdgen.org/calculations
http://www.bgsoflex.com/holley.html
http://www.rickwrench.com/bunchofcalculators.html
http://www.ford-trucks.com/calculators/index.php
http://hotrodworks.net/hotrodmath/hotrodmath.html
http://kb-silvolite.com/calc.php
http://www.wallaceracing.com/dynamic-cr.php
http://www.dsm.org/tools/calchp.htm
http://www.wahiduddin.net/calc/calc_hp_dp.htm
http://users.erols.com/srweiss/calccr.htm
http://users.erols.com/srweiss/index.html#jcalc
http://wahiduddin.net/calc/calc_da.htm
http://www.diamondracing.net/cocalc.htm
http://www.crower.com/misc/valve_timing_chart.html
http://www.bob2000.com/carb.htm
http://www.ondoperformance.com/page2.html
http://www.rbracing-rsr.com/camshaft.html
http://www.rbracing-rsr.com/runnertorquecalc.html
http://www.engr.colostate.edu/~allan...ngth/pipe.html
http://purplesagetradingpost.com/sumner/bvillecar/bville-spreadsheet-index.html
http://www.rceng.com/technical.aspx
gear spread sheet that comes in handy THANKS TO 1FATGMC
http://purplesagetradingpost.com/sumner/bvillecar/bville-spreadsheet-index.html
HERES OTHER INFO LINKS
http://www.wallaceracing.com/reargear.htm
http://users.erols.com/srweiss/calcmph.htm
http://users.erols.com/srweiss/calcrpm.htm
http://users.erols.com/srweiss/calcrgr.htm
http://users.erols.com/srweiss/transc.htm#tabtop
http://users.erols.com/srweiss/transc.htm#Auto
http://www.pipeflowcalculations.com/airflow/index.htm
http://victorylibrary.com/mopar/header-tech-c.htm
http://www.uucmotorwerks.com/html_pr...torquemyth.htm
http://tom.marshall.tripod.com/exhaust.html
http://www.engr.colostate.edu/~allan...a/effarea.html
http://www.engr.colostate.edu/~allan...ngth/pipe.html
http://www.pontiacracing.net/js_header_length1.htm
http://www.wallaceracing.com/runnertorquecalc.php
http://auto.howstuffworks.com/question172.htm
http://www.auto-ware.com/software/eap/eap.htm
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
its unfortunate but theres always going to be some transaction where machine shops or suppliers drop the ball or screw up.
Ive certainly had more than what Id consider my fair share of less than ideal transactions and dealing with machine shops over the decades,
and you can,t even in most cases point out the ones you should always go too...or avoid simply because many will go for hundreds of transactions,
having hundreds of happy customers.. then a couple totally #$%^& up , totally uncharacteristic transaction's,
and following with a "we just don,t really give a S4$%^& attitude and less than quality parts shipped."
then followed inexplicably reverting back to the normal customer relationship.


a few factors to consider

http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/

http://garage.grumpysperformance.com/index.php?threads/how-big-a-fuel-pump-do-you-need.1939/

http://garage.grumpysperformance.co...h-on-fuel-air-ratios-that-gets-ignored.15506/

http://www.wallaceracing.com/chokepoint.php

http://www.wallaceracing.com/injector-sizing.php

http://www.wallaceracing.com/header_length.php

http://www.wallaceracing.com/calcafhp.php

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

http://garage.grumpysperformance.com/index.php?threads/decking-or-truing-up-the-block-deck.16152/

https://www.exhaustvideos.com/faq/how-to-calculate-muffler-size-pipe-diameter/

http://garage.grumpysperformance.co...on-picking-a-shop-to-do-work.5053/#post-28837

http://garage.grumpysperformance.com/index.php?threads/machine-work-costs.3169/#post-8452

http://garage.grumpysperformance.com/index.php?threads/finding-a-machine-shop.321/#post-55314

http://garage.grumpysperformance.com/index.php?threads/parts-prep-cleaning.6255/#post-41064

http://garage.grumpysperformance.com/index.php?threads/precision-measuring-tools.1390/#post-52466

http://garage.grumpysperformance.co...ng-dated-signed-and-pictures.4786/#post-12990

http://garage.grumpysperformance.co...oo-deal-with-a-machine-shop.14454/#post-750
 
Last edited:

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
1/2 stroke + rod length+piston pin compression height,
should roughly equal block deck height ,
compress_image002.gif

plus or minus a few thousandths,
minor adjustments in compression,
due to head gasket thickness and what the piston deck height is are common
common BB CHEVY piston compression heights are
1.270"
1.395"
1.520"
1.645"
1.765"
remember the blocks deck height, minus the piston pin height minus 1/2 the crank stroke will equal the required connecting rod length
OR
the blocks deck height, minus the connecting rod length, minus 1/2 the crank stroke. will equal the required piston pin height

if you wonder why I suggest using SCAT (H) beam style cap screw connecting rods vs stock or most (I) beam designs this picture should show the increased cam to connecting rod clearance

After market performance ,big block connecting rods come in several common lengths
0704ch_15_z+chevy_big_blocka.jpg

6.7-6.8"

https://www.summitracing.com/parts/esp-67003dl19/overview/make/chevrolet

https://www.summitracing.com/parts/cpi-u16230/overview/make/chevrolet

https://www.summitracing.com/parts/sca-6670022a/overview/make/chevrolet

https://www.summitracing.com/parts/sca-6680022a/overview/make/chevrolet

https://www.summitracing.com/parts/sca-6680022/overview/make/chevrolet



0704ch_14_z+chevy_big_block+.jpg

notice the pin height in the pistons pictured above allow a longer or shorter connecting rod length

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.co...onnecting-rod-rod-length-too-stroke-info.510/

http://garage.grumpysperformance.com/index.php?threads/measuring-rod-and-pin-heights.3760/#post-9968
 
Last edited:

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
that 4.25" stroke crank and 6.385" connecting rod = 8.51 inch combined
remember 1/2 the stroke or 2.125" is used here,
on a 496 4.25: stroke crank
combined with rod length and deck height
td425.png

http://garage.grumpysperformance.com/index.php?threads/427-tall-deck.15267/


http://garage.grumpysperformance.com/index.php?threads/tall-deck-options.14678/

http://garage.grumpysperformance.com/index.php?threads/427-truck-tall-deck-engine-mods.14632/
BBCbott.jpg

with a 9.8" standard deck block that requires a 1.29" pin height piston pin
with a 10.2" standard deck block that requires a 1.69" pin height piston pin

yes the piston can be slightly lower or above the deck,
and yes different head gaskets can be used but ideally you want about a .040-.042 quench
remember the blocks deck height,
minus the piston pin height minus 1/2 the crank stroke,
will equal the required connecting rod length
OR
the blocks deck height, minus the connecting rod length,
minus 1/2 the crank stroke. will equal the required piston pin height
and yes blocks tend to measure about .020 over the listed deck height until machined
to level or square the deck surface
 

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member

If your building a 496 stroker BBC
,
DO THE MATH THINK IT THROUGH AND ASK QUESTIONS
you should be looking at oval port heads in the 265cc-300 cc port size range
ideally, compression ratios for common pump ,street octane fuel ,would work best with about a 10.4-10.8:1
cams in the 235-245 duration at .050 lift and lift in the .580-.650 ranges generally in a hydraulic roller on a 108-110 lsa


http://garage.grumpysperformance.com/index.php?threads/sellecting-cylinder-heads.796/

http://garage.grumpysperformance.com/index.php?threads/semi-fool-proof-cam-sellection.82/

heads

TRICKFLOW
http://www.trickflow.com/egnsearch.asp? ... 4294867081
http://www.trickflow.com/customerservice
1-330-630-1555 • 1-888-841-6556

BRODIX
http://www.brodix.com/heads/heads.html
479.394.1075

DART
http://www.dartheads.com/products/cylinder-heads
Dart Machinery; 248/362-1188; DartHeads.com


AIR FLOW RESEARCH
http://www.airflowresearch.com/
https://www.airflowresearch.com/cylinder-heads/bbc-magnum-24-cylinder-head/

toll free: 877-892-8844
tel: 661-257-8124

Patriot Performance
Patriot Performance; 888/462-8276; Patriot-Performance.com


RHS
http://www.racingheadservice.com/rhs/cylinder-headshtml
Toll Free: 877-776-4323
Local: 901-259-1134

EDELBROCK
http://www.edelbrock.com/automotive_new ... main.shtml
Edelbrock; 310/781-2222; Edelbrock.com

BMP (world products)
http://www.theengineshop.com/products/cylinder-heads
Tel: 631-737-0372
Fax: 631-737-0467

BUTLER PERFORMANCE
http://www.butlerperformance.com/products/cylinder_heads/cylinder_head_labor.html
866-762-7527

BLUE PRINT ENGINES
http://www.blueprintengines.com/ind...sb-chevy-aluminum-cylinder-heads-cnc-machined
1800-483-4263

PRO-FILER
https://www.profilerperformance.com/
937‐846‐1333

https://www.billmitchellproducts.com/world-cast-iron-26degree-269cc/



“Quality is like buying oats. If you want nice, clean, fresh oats, you must pay a fair price.
However, if you can be satisfied with oats that have already been through the horse ...
that comes a little cheaper.”



cams

lunati
http://www.lunatipower.com/

ISKY
http://www.iskycams.com/

BRODIX
http://www.brodix.com/heads/heads.html

ERSON
http://www.pbm-erson.com/store.php?catId=327
http://usaperform.com/-c-154_206.html


CROWER'
http://www.crower.com/

KINSLER
http://www.kinsler.com/page--Home-Page--13.html

HERBERT
http://www.dougherbert.com/

DART
http://www.dartheads.com/products/engin ... big-blocks

CRANE CAMS
(I did a ton of business with the old crane cams, Ive not yet built a firm background with the new company but so far they seem competent)
http://www.cranecams.com/?show=technicalhelp

http://www.jonescams.com/2006catalog_002.htm
Ive heard good things but never used these guys

ELGIN
http://catalog.elginind.com/download/PROSTOCK.PDF


are some other companies Ive had nothing but good results from
CROWER
http://www.crower.com/media/pdf/chevrolet.pdf

CRANE
http://www.cranecams.com/uploads/catalog/Crane Cams Master Catalog.pdf

ERSON
http://www.pbm-erson.com/UserFiles/Documents/Catalogs/2013 erson catalog.pdf
http://usaperform.com/-c-154_206.html

HOWARD
http://www.howardscams.com/howards2015.pdf
https://howardscams.com/c-1268612-camshafts-and-cam-lifter-sets.html

HERBERT
http://www.herbertcams.com/herbert-cams-cam-kits/

ENGLE
http://www.englecams.com/downloads/2010_engle_catalog.pdf
 

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
http://forum.grumpysperformance.com/viewtopic.php?f=44&t=579&p=743#p743

if your going to get into engine building you'll benefit from owning all the reference material you can get,
obviously that implies you actually take the time and effort to read through and take notes

one of the tools you really should have in your tool kit!
a great deal of process of correcting problems, lies in your skill at locating and isolating the source of those problems.
stepping back and thinking thru the possible problems and the necessary repairs, and tests that will isolate the problem, before starting the repairs beats the hell out of just randomly swapping components

WHEN tracking down problems you'll need to use a few basic tools,
use of a VACUUM GAUGE, a TIMING LIGHT AND A V.O.M. METER!
and actually reading a SHOP MANUAL and the skill to read spark plugs
will go a long way toward helping you isolate the problem.





tools you really need
SHOP MANUAL
timing light
vacuum gauge
IR temp gun
degree wheel
dial indicator and stand
fuel pressure gauge
V.O.M. meter
magnifying spark plug reader
lift or (4) 12 ton jack stands
basic mechanic hand tools
floor jack

the most valuable tool you can acquire is as broad a selection of valid information, on exactly how and why things work in your car,s engine, drive train , and suspension , as a reference base to work from, and acquiring a good set of testing and measuring tools to verify and test with
you really should get these books and read them before going any further, it will help a good deal


http://www.amazon.com/exec/obidos/A...5079777/sr=2-1/ref=sr_2_1/102-1234339-0571324

1557882169.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/t...gy_img_2/102-1234339-0571324?v=glance&s=books

0912656042.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg


http://www.amazon.com/exec/obidos/t...gy_img_2/102-1234339-0571324?v=glance&s=books

0895861755.01._PE30_PIdp-schmooS,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/t..._books_1/102-1234339-0571324?v=glance&s=books

1884089208.01._PE30_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/t..._books_3/102-1234339-0571324?v=glance&s=books
1557883572.01._PE30_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg

http://www.amazon.com/exec/obidos/t...f=sr_1_2/102-1234339-0571324?v=glance&s=books
0760302030.01._PE_PIdp-schmoo2,TopRight,7,-26_SCMZZZZZZZ_.jpg


INVESTING THE TIME AND EFFORT IN PURCHASING AND READING A FEW BOOKS WILL BE VERY COST EFFECTIVE
bbcbl1.jpg

bbcbl2.jpg

bbcbl3.jpg

bbcbl4.jpg

bbcbl5.jpg

bbcbl6.jpg

bbcbl7.jpg

bbcbl8.jpg

bbcbl9.jpg

http://www.dragzine.com/tech-stories/en ... ine-block/
"

SMALL BLOCK REFERENCE BOOKS YOULL WANT
start by buying these books and watching the video

http://www.themotorbookstore.com/resmchstvi.html
chevystep.jpg


maxperf.jpg

http://www.amazon.com/David-Vizards...8&qid=1456194032&sr=8-5&keywords=DAVID+VIZARD
HOW TO BUILD MAX PERFORMANCE CHEVY SMALL BLOCKS ON A BUDGET by DAVID VIZARD
.
johnl.jpg

JOHN LINGENFELTER on modifying small-block chevy engines
http://www.amazon.com/Lingenfelter-...=1456193940&sr=8-1&keywords=JOHN+LINGENFELTER

smokeyy.jpg

http://www.amazon.com/Smokey-Yunick...2&sr=8-1&keywords=smokey+yunick+power+secrets


jenkinsrace.jpg
 
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