how do I calculate the bore/stroke displacement?

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
Grumpy, I have a guy that has a BBC short block, for sale,
he says is a 454 with a .060 over bore,
what is the displacement?



youll obviously need precision measuring tools to be accurate
you can get very close estimates if you own a accurate 12" dial caliper,
if you need to know the exact dimensions you need better tools too measure,
before you buy components talk to both the vendors and your machine shop of choice ,
you damn sure don,t want mis-matched components and clearances.
you need to measure accurately, and know what your current block will function correctly with,
and pay attention to clearances and other details,
that make or break the engines potential durability and power potential.



short answer,
a .060 over bore 454 is a 467

displacement

engine displacement formula

bore diam. x bore diam. x stroke length x number of cylinders x .7854= displacement
examples

sbc
4.030 x 4.030 x 3.75 x 8 x .7854= 383

BBC
4.31 x 4.31 x .4.0 x 8 x .7854= 466.8


shop carefully a decent name brand 12" dial caliper can be purchased for $60-$75

dialcalps.jpg



http://garage.grumpysperformance.com/index.php?threads/precision-measuring-tools.1390/#post-68861
dialborega.png


precisemes.png




RELATED INFO YOU NEED,
yes the vast majority of the info is in the links and sub-links AS USUAL

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

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

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

http://garage.grumpysperformance.co...piston-to-bore-clearance-on-your-block.14251/

http://garage.grumpysperformance.co...ng-piston-pin-height-compression-height.5064/


http://garage.grumpysperformance.com/index.php?threads/what-con-rods-would-you-buy.942/

http://garage.grumpysperformance.com/index.php?threads/types-of-crankshaft-steel.204/

http://garage.grumpysperformance.com/index.php?threads/redline.343/

http://garage.grumpysperformance.co...-much-power-will-a-cast-crank-work-with.8685/

http://garage.grumpysperformance.com/index.php?threads/flat-domed-or-pop-up-pistons-design.4472/

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

http://garage.grumpysperformance.co...tion-of-crank-durring-short-blk-assembly.852/

Chevy V8 bore & stroke chart
I saw this online and figured I would post it..I am going to add the popular lsx strokers soon
CID BORE STROKE
262 = 3.671" x 3.10" (Gen. I, 5.7" rod)
265 = 3.750" x 3.00" ('55-'57 Gen.I, 5.7" rod)
265 = 3.750" x 3.00" ('94-'96 Gen.II, 4.3 liter V-8 "L99", 5.94" rod)
267 = 3.500" x 3.48" (Gen.I, 5.7" rod)
283 = 3.875" x 3.00" (Gen.I, 5.7" rod)
293 = 3.779" x 3.27" ('99-later, Gen.III, "LR4" 4.8 Liter Vortec, 6.278" rod)
302 = 4.000" x 3.00" (Gen.I, 5.7" rod)
305 = 3.736" x 3.48" (Gen.I, 5.7" rod)
307 = 3.875" x 3.25" (Gen.I, 5.7" rod)
325 = 3.779" x 3.622" ('99-later, Gen.III, "LM7", "LS4 front wheel drive V-8" 5.3 Liter Vortec, 6.098" rod)
327 = 4.000" x 3.25" (Gen.I, 5.7" rod)
345 = 3.893" x 3.622" ('97-later, Gen.III, "LS1", 6.098" rod)
350 = 4.000" x 3.48" (Gen.I, 5.7" rod)
350 = 4.000" x 3.48" ('96-'01, Gen. I, Vortec, 5.7" rod)
350 = 3.900" x 3.66" ('89-'95, "LT5", in "ZR1" Corvette 32-valve DOHC, 5.74" rod)
364 = 4.000" x 3.622" ('99-later, Gen.III, "LS2", "LQ4" 6.0 Liter Vortec, 6.098" rod)
376 = 4.065" x 3.622" (2007-later, Gen. IV, "L92", Cadillac Escalade, GMC Yukon)
383 = 4.000" x 3.80" ('00, "HT 383", Gen.I truck crate motor, 5.7" rod)
400 = 4.125" x 3.75" (Gen.I, 5.565" rod)
427 = 4.125" x 4.00" (2006 Gen.IV, LS7 SBC, titanium rods)

Two common, non-factory smallblock combinations:

377 = 4.155" x 3.48" (5.7" or 6.00" rod)
400 block and a 350 crank with "spacer" main bearings
383 = 4.030" x 3.75" (5.565" or 5.7" or 6.0" rod)
350 block and a 400 crank, main bearing crank journals
cut to 350 size

blueprint engine blocks
https://www.jegs.com/v/Blueprint-En...brand&storeId=10001&catalogId=10002&langId=-1

DART BLOCKS
http://dartheads.com/product-category/big-block-chevy/blocks/

world products blocks
https://www.billmitchellproducts.com/engine-blocks/

G.M. performance
https://www.gmperformancemotor.com/category/LS196.html
ALL production big blocks used a 6.135" length rod.
CHEVY BIG BLOCK V-8 BORE AND STROKE


366T = 3.935" x 3.76"
396 = 4.096" x 3.76"
402 = 4.125" x 3.76"
427 = 4.250" x 3.76"
427T = 4.250" x 3.76"
454 = 4.250" x 4.00"
477= 4.5" bore x 3.76" stroke
496 = 4.250" x 4.37" (2001 Vortec 8100, 8.1 liter)
502 = 4.466" x 4.00"
557T= 4.5 bore 4.375" stroke
572T = 4.560" x 4.375" (2003 "ZZ572" crate motors)

T = Tall Deck
 
Last edited:
Back
Top