Re: 340 bore size
[Re: dart6]
#2970174
10/04/21 03:43 AM
10/04/21 03:43 AM
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Joined: Jul 2005
Posts: 707 California
BigDaddy440
super stock
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super stock
Joined: Jul 2005
Posts: 707
California
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I would think so. That's .060" over, which typically for any production block is pushing it.
1969 A12 Roadrunner 1970 Plymouth Cuda 1968 Dodge Dart
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Re: 340 bore size
[Re: fastmark]
#2970224
10/04/21 08:53 AM
10/04/21 08:53 AM
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Joined: Jan 2003
Posts: 13,354 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
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I have one that is .030" over currently and it will need at least 4 sleeves to go any bigger.
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: 340 bore size
[Re: TJP]
#2970293
10/04/21 11:30 AM
10/04/21 11:30 AM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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Also... there is nothing wrong with a sleeved block... in fact, some racers prefer sleeved blocks as the walls become thicker.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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Re: 340 bore size
[Re: Mopar Mitch]
#2970300
10/04/21 11:41 AM
10/04/21 11:41 AM
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Joined: Nov 2007
Posts: 21,819 Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
Joined: Nov 2007
Posts: 21,819
Kirkland, Washington
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Also... there is nothing wrong with a sleeved block... in fact, some racers prefer sleeved blocks as the walls become thicker. Except for the cost of creating one!
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Re: 340 bore size
[Re: Pacnorthcuda]
#2970318
10/04/21 12:14 PM
10/04/21 12:14 PM
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Joined: Jan 2004
Posts: 4,563 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,563
Motor City
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I have a 340 laying around. I was thinking about making a winter project out of it. Good thing is if it needs any sleeves I can just stay after at work and machine and install them.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: 340 bore size
[Re: Pacnorthcuda]
#2970441
10/04/21 03:36 PM
10/04/21 03:36 PM
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Joined: Jan 2003
Posts: 13,354 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
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Also... there is nothing wrong with a sleeved block... in fact, some racers prefer sleeved blocks as the walls become thicker. Except for the cost of creating one! Exactly. If I was still in the machine shop business, I'd have already fixed it, lol.
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: 340 bore size
[Re: an8sec70cuda]
#2970616
10/04/21 11:11 PM
10/04/21 11:11 PM
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Joined: Jan 2003
Posts: 1,996 s. e. pa.
calrobb2000
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,996
s. e. pa.
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hi
i did a 340 for a friend at 4.100 and it powers his 74 cuda to 12.5 et s ???
been together for 5+ years now , street engine , pump gas , drive anywhere .
no sleeves !
Last edited by calrobb2000; 10/04/21 11:17 PM.
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Re: 340 bore size
[Re: calrobb2000]
#2970755
10/05/21 08:26 AM
10/05/21 08:26 AM
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Joined: Jan 2003
Posts: 13,354 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
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hi
i did a 340 for a friend at 4.100 and it powers his 74 cuda to 12.5 et s ???
been together for 5+ years now , street engine , pump gas , drive anywhere .
no sleeves !
Did you sonic check it? I'm sure there's a bunch running around at .060" over and are just fine. So many variables to consider. As much as the 440 blocks vary in thickness, I'm sure the small blocks were no different.
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: 340 bore size
[Re: an8sec70cuda]
#2970929
10/05/21 01:22 PM
10/05/21 01:22 PM
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Joined: Aug 2003
Posts: 43,123 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,123
Bend,OR USA
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hi
i did a 340 for a friend at 4.100 and it powers his 74 cuda to 12.5 et s ???
been together for 5+ years now , street engine , pump gas , drive anywhere .
no sleeves !
Did you sonic check it? I'm sure there's a bunch running around at .060" over and are just fine. So many variables to consider. As much as the 440 blocks vary in thickness, I'm sure the small blocks were no different. I bought a sonic tester for that reason after cracking a cylinder in my first 400 stroker build, the driver side had massive core shift and the cam side of those cylinders were all less than .060 thick It was so thin sleeves wouldn't seal at the bottom I sonic test every block now before sending them to the machine shops for work You should too
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 340 bore size
[Re: Cab_Burge]
#2970962
10/05/21 02:33 PM
10/05/21 02:33 PM
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Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
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pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
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The sonic testers do have good merit... especially when they show extra thin walls... something then to consider.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
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