Mega blocks, some different quality?
#2389161
10/18/17 07:35 AM
10/18/17 07:35 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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OP
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Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
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I bought a mega block way back in about 2,000 (AD!) Any body know of differences in quality over the years they were cast? I don't here much about some of the issues I have had, like cap walk and cylinder bank to bank flex? I got around both, ccw crank for the caps, no gasket, used silicone for intake sealing.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Mega blocks, some different quality?
[Re: 451Mopar]
#2389346
10/18/17 03:21 PM
10/18/17 03:21 PM
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Joined: Jan 2004
Posts: 4,539 Motor City
6PKRTSE
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master
Joined: Jan 2004
Posts: 4,539
Motor City
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My Hemi 4.500" Bore block is an 07'ish vintage. No casting or machining issues at all with mine during the machining process other then our machine shop complaining how they chewed up tooling & had to slow down the speed & feeds of all of our machines due to the higher/better nickel content within the cast iron. They were all amazed when compared to the 1000's of Dart/World & other aftermarket & stock blocks we machine.
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: Mega blocks, some different quality?
[Re: gregsdart]
#2389393
10/18/17 04:43 PM
10/18/17 04:43 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
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Posts: 19,304
Las Vegas
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All of the Mega/World block I have used and been involved with ALL showed signs of cap walk and main bearing wear. The single best change we made was switching to a center counter weighted crank..But what do I know.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Mega blocks, some different quality?
[Re: Al_Alguire]
#2389540
10/18/17 09:52 PM
10/18/17 09:52 PM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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OP
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Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
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All of the Mega/World block I have used and been involved with ALL showed signs of cap walk and main bearing wear. The single best change we made was switching to a center counter weighted crank..But what do I know. Same hear on the crank. My block has no extra stiffening ribs in the valley, and it sucked gaskets in so I went silicone, no gasket. I run injection, so if it leaks, it isn't as hard to deal with. Haven't had issues yet though.
Last edited by gregsdart; 10/18/17 09:54 PM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Mega blocks, some different quality?
[Re: Al_Alguire]
#2390128
10/20/17 12:57 AM
10/20/17 12:57 AM
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Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
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I Live Here
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Great Neck,LI,new york
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I've broken two, both were the pre world versions does that count Not with the power your playing with!
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Mega blocks, some different quality?
[Re: gregsdart]
#2390639
10/21/17 01:42 AM
10/21/17 01:42 AM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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They were actually both the older casting ones as well. Non stiffening rib versions like DVM posted..Had to go back and look at the pics..
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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