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Author
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Topic: cubic inches?
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-06-2005 12:05 AM
   
What does a 428 bored 60 thousandths become in cubic inches?
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johnmustang
Gearhead Posts: 5939
From: British Columbia , Canada
Registered: Nov 2001
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posted 01-06-2005 12:27 AM
How about a 289 that is 60 over?------------------
JOHN
65 FASTBACK 2+2.....14.44 @ 107mph 1/4
87 TAURUS WAGON
03 F150 XLT SUPER CREW 4X4 SHORT BOX
Member:Vancouver Island Mustang Association
M&M #1710
65 FASTBACK
2003 F150 XLT SUPER CREW 4X4
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Catmando
Gearhead Posts: 139
From: Vermilion, OH USA
Registered: Jun 2004
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posted 01-06-2005 12:36 AM
440 cid?, and the wee block, uh 301 cid.
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Rory McNeil
Gearhead Posts: 1572
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 01-06-2005 12:38 AM
Normally with a 4"ish bore, .030 gets you about 6 more cubes, so .060 should net you 12 extra. So approximatley 440 cubes. Just curious, did you have the 428 block sonic checked? I`ve had several of my 428s checked, I was never confident in the numbers to go .060 over, as I personally like .150" or thicker cylinder walls after boring. I know some guys have run with walls as thin as .090" but I wouldn`t try it myself. ------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA M/Stock 302 5speed. [email protected]
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-06-2005 12:51 AM
Yes, don't know the exact #'s. The machinist who has built engines for almost forty years and has a great reputation said absolutely no problem. I hope he's right. He builds a ton of race engines for the strip and roundy-rounds that outruns and outlasts everyone elses. This is an occasional street cruiser not a racer.
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indyphil
Gearhead Posts: 2516
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 01-06-2005 09:13 AM
should be easier to calculate properly...
volume of a cylinder is:Pi x (Bore/2)^2 x stroke. Volume of a V8 would therefore be 8 times that. A 289 bored 60 over is Pi x (4.060/2)^2 x 2.875
Pi x (2.03)^2 x 2.875
Pi x 4.1209 x 2.875
Pi x 11.8475
37.22 cubic inches per cylinder
37.22 x 8 = 297.76
Its possible to see the squared relationship between bore and displacement and simplify to remove the need to know your stroke:
new bore/old bore = ratio
square that ratio and multiply by the old displacement 289 example:
4.060/4 = 1.015 (ratio) 1.015^2 = 1.030225 (ratio squared) 289 x 1.030225 = 297.7 So for a 428:
4.192/4.132 = 1.01452 1.01452^2 = 1.029252 428 x 1.029252 = 440.5 If your still reading this far down you must be as boring as me.
------------------
'68 coupe, '66 289 C code
engine, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-06-2005 11:58 AM
Thanks for the techno info. So that is what those #'s meant way back in all those math classes I slept through. Really, I do know how to figure this now and appreciate your time.
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mlanden
Gearhead Posts: 115
From: Michigan
Registered: Jan 2005
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posted 01-06-2005 10:30 PM
390 (+.030) ?------------------
Thanks in advance... Mark 1966 Fairlane ~ 390(+.030) ~ 428CJ Heads ~ Ram Air ~ 4 Speed ~ 3:91 Trac Loc
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mlanden
Gearhead Posts: 115
From: Michigan
Registered: Jan 2005
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posted 01-06-2005 10:33 PM
quote:
Originally posted by mlanden:
390 (+.030) ?
Is it 396ci ------------------
Thanks in advance... Mark 1966 Fairlane ~ 390(+.030) ~ 428CJ Heads ~ Ram Air ~ 4 Speed ~ 3:91 Trac Loc
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68 S-code GT
Gearhead Posts: 2746
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-06-2005 10:58 PM
quote:
Originally posted by mlanden:
Is it 396ci
That?s funny; your engine doesn?t look like a Chevy engine.  ------------------
Ed S. 68 S-code FB GT 4spd(now C6)/3.25 PS PDB
68 J-code(now 289) Cp Sprint"B" C4/3L00-9" PDB PS AC
99 F150 XLT Ext/cab, 4X4, 5.4L, 3L55
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mlanden
Gearhead Posts: 115
From: Michigan
Registered: Jan 2005
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posted 01-06-2005 11:01 PM
quote:
Originally posted by 68 S-code GT:
That?s funny; your engine doesn?t look like a Chevy engine.
LOL
------------------
Thanks in advance... Mark 1966 Fairlane ~ 390(+.030) ~ 428CJ Heads ~ Ram Air ~ 4 Speed ~ 3:91 Trac Loc
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indyphil
Gearhead Posts: 2516
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 01-07-2005 09:56 AM
quote:
Originally posted by mlanden:
Is it 396ci
yes, thats right 4.08/4.05 = 1.007407
1.007407^2 = 1.014869
390 x 1.014869 = 395.8 ------------------
'68 coupe, '66 289 C code
engine, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm
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68 S-code GT
Gearhead Posts: 2746
From: Sayreville, NJ, US
Registered: Mar 2000
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posted 01-07-2005 11:02 AM
quote:
Originally posted by mlanden:
LOL
I have the same thing as you and you should see some of the looks I get when I tell people that it?s a 396.  ------------------
Ed S. 68 S-code FB GT 4spd(now C6)/3.25 PS PDB
68 J-code(now 289) Cp Sprint"B" C4/3L00-9" PDB PS AC
99 F150 XLT Ext/cab, 4X4, 5.4L, 3L55 [This message has been edited by 68 S-code GT (edited 01-07-2005).]
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BlueMule
Gearhead Posts: 1494
From: Kent Island, MD USA
Registered: Sep 2002
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posted 01-07-2005 11:08 AM
You could just say it's a 30 over 390. People would ask if the SBF in my Fairlane was a 260, 289 or 302 and and my answer would be 30 over 289. No funny looks no nuthin. ------------------
-Paul 70 Mach1 351C/FMX
79 Ranchero GT 302 smogger/C4
97 Expedition XLT 5.4
00 SVT f150 Lightning 4149 of 4966 Born on: 06/26/2000 'If you're not the lead dog, the view never changes.'
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-07-2005 08:53 PM
I like the sound of a .040 over 428 better than a 440 mopar in my Mach.
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-07-2005 08:55 PM
Can't believe I typed .040 instead of .060. Another class I slept through...Typing.
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TomP
Gearhead Posts: 5822
From: Delta BC Canada
Registered: Dec 99
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posted 01-07-2005 11:42 PM
we don't need to be like Chevy guys calling our engines 355's and 468's to differentiate them from the billions of 350's and 454's. Ford guys just don't understand 293 HiPo or Boss 308 or 433 Low Riser where a Chevy guy needs to feel special by having any rebuild specs noted in the engine title.
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Wayne Brooks
Gearhead Posts: 154
From: Winfield, Ks. 67156
Registered: Jan 2003
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posted 01-08-2005 10:02 AM
I agree!! I'm proud of my 428! I've had many 350's, they're everywhere. Hate it when I see an old Ford street rod with an off-breed engine in it.
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-09-2005 11:03 AM
Simple calculation formula.
Bore x bore x stroke
then that figure x .7854
that figure x 8 = CID.
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Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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