Most Cubes Out of a 426 Hemi?
#509727
10/28/09 09:32 AM
10/28/09 09:32 AM
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Joined: Aug 2008
Posts: 775
San Antonio, Tx
bulletpruf
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 775
San Antonio, Tx
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Fellas -
Wondering how many cubes I can get out of my 426 hemi. It's an over the counter Mopar block; likely cast in 2006 or so. May go through it this winter and thinking about a new rotating assembly.
Thanks in advance for any info,
Scott
Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos
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Re: Most Cubes Out of a 426 Hemi?
[Re: LikarockCrusher]
#509734
10/28/09 10:14 AM
10/28/09 10:14 AM
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Joined: Aug 2008
Posts: 775
San Antonio, Tx
bulletpruf
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 775
San Antonio, Tx
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Ok, I checked Indy's site. 605" or so sounds good to me. How much work is involved fitting a 4.5 or 4.75 crank in the stock block? Grinding needed for rod bolt clearance?
I'm assuming that the block should take a 4.500 bore, too, but are most blocks good for this or is this really dependent on the sonic check? Does this leave me any room for a rebuild/overbore?
Thanks!
Scott
Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos
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Re: Most Cubes Out of a 426 Hemi?
[Re: bulletpruf]
#509735
10/28/09 10:21 AM
10/28/09 10:21 AM
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Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,417
Marion, South Carolina [><]
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It depends on which block you have. There are 2 versions of the hemi blocks...one that can go to 4.5" bore (megablock) and another that really shouldn't go any further than 4.31" (replacement block). You still need to have it sonic checked to see how thick it is. CHIP
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Most Cubes Out of a 426 Hemi?
[Re: LikarockCrusher]
#509739
10/28/09 10:44 AM
10/28/09 10:44 AM
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Joined: Aug 2008
Posts: 775
San Antonio, Tx
bulletpruf
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 775
San Antonio, Tx
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E mailed Indy. They didn't answer on machine work, but said they thought that I had a stock replacement block with a max bore of 4.375 (have to sonic check) with max cubes at 540.
Scott
Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos
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Re: Most Cubes Out of a 426 Hemi?
[Re: bulletpruf]
#509741
10/28/09 01:40 PM
10/28/09 01:40 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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To put more than 4.15 worth of stroke in it generally means the stock oil pickup has to go, no room.
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Most Cubes Out of a 426 Hemi?
[Re: HemiRick]
#509742
10/28/09 02:03 PM
10/28/09 02:03 PM
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Joined: Oct 2006
Posts: 7,371
Iowa
burdar
Owen's Dad
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Owen's Dad
Joined: Oct 2006
Posts: 7,371
Iowa
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Quote:
"Which weighs more, a pound of feathers or a pound of stones"
That's easy. Feathers obviously weigh less than stones. Next question please.
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Re: Most Cubes Out of a 426 Hemi?
[Re: Snoopy]
#509744
10/28/09 04:14 PM
10/28/09 04:14 PM
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Joined: Jan 2003
Posts: 75,139
A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,139
A Banana Republic near you.
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Quote:
Wasn't there a block with a raised cam for large stroke engines?
yes and he would need it to go as big on the stroke that he wants .
on the block he has , more than likely a water block , should have had a yellow sticker on the bellhousing flange telling you max overbore , mine i am pretty sure says 4,340 , maybe it's 4.310 I'd haveto drag it out to look .
I wouldn't max bore it , then it's got no lives left .
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Re: Most Cubes Out of a 426 Hemi?
[Re: bulletpruf]
#509745
10/29/09 07:46 PM
10/29/09 07:46 PM
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Joined: Dec 2007
Posts: 576
Somewhere Over the Hill
Mr. Dodge
mopar
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mopar
Joined: Dec 2007
Posts: 576
Somewhere Over the Hill
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I have 588 cid Hemi in My R/T  Have you seen the movie Up in Smoke that's the R/T on the street
"The advantage of being armed the Americans possess over the people of all other nations,which are carried as far as the public resources will bear, the governments are afraid to trust the people with arms."(James Madison)
69 Hemi Coronet R/T
70 456 Dart Swinger
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