Re: megablock?
[Re: KOS]
#1664171
08/27/14 08:40 AM
08/27/14 08:40 AM
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Joined: Jan 2003
Posts: 9,986
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,986
Frostbitefalls MN (Rocky&Bullw...
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I have one from around year 2000, and it doesn't have the stiffening ribs in the valley, which it needs. check for that and cylinder wall thickness. You can still make good power with one of those blocks cast when mine was, but things start to move around and I had problems keeping an intake gasket in place. I use just RTV silicone sealer now.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: megablock?
[Re: KOS]
#1664172
08/27/14 11:06 AM
08/27/14 11:06 AM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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Quote:
ya this one was machined at cummins its at 4.38 bore now......
What bore do you want to take it to ? The one I have has a sticker saying not to take it past 4.340 , it's a siamese bore block that got used for a 426 build because of that.
If possible I would ask to see a sonic check if you want it use it at that bore or larger before buying it, even offer to pay for the sonic check. Dan Costello said it's possible to shift things around or even just sleeve the thin holes to bring it back to being used at 4.500 if that is the ultimate intended plan.
The block I have only has a couple of shifted bores but I'm leaving it at 4.250.
But plan of having it completely checked/ machined if it hasn't already been , deck on mine was about .020 tall and the lifter bore geometry was off.
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Re: megablock?
[Re: JohnRR]
#1664173
08/27/14 11:17 AM
08/27/14 11:17 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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The mega block I had was one of the last made by MP and was the small bore.. I had it sonic checked and it could have gone 4.5 EASY with a real good wall at 4.5(almost .200 wall at 4.5).. I dont recall what year that block was made in.. maybe about 2005 
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Re: megablock?
[Re: KOS]
#1664176
08/27/14 05:45 PM
08/27/14 05:45 PM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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Quote:
thx for the responses guys this is actually a MP 500 shortblock assembled at cummings when the where building MP crate engines.PN#5007665.forged crank and eagle h-beams but hyperutetic pistons.i was thinking if i could get a good deal on it i would replace the pistons with some nice forged units.just didnt want to buy it and find out the block wont go any bigger.sonic checking is probably out of the question until i purchase it and dissassemble.just wanted a heads up on any potential BS i might encounter.
If it's an assembled shortblock it was already sonic checked and it would have a sticker on the rear bellhousing flange stating the size it can go to if less than 4.500.
As far as the condition of it , don't stop at just changing the pistons , check EVERYTHING. Cummins was the LOW BIDDER and mopar got EXACTLY what they paid for ... 
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Re: megablock?
[Re: JohnRR]
#1664177
08/27/14 07:02 PM
08/27/14 07:02 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
thx for the responses guys this is actually a MP 500 shortblock assembled at cummings when the where building MP crate engines.PN#5007665.forged crank and eagle h-beams but hyperutetic pistons.i was thinking if i could get a good deal on it i would replace the pistons with some nice forged units.just didnt want to buy it and find out the block wont go any bigger.sonic checking is probably out of the question until i purchase it and dissassemble.just wanted a heads up on any potential BS i might encounter.
If it's an assembled shortblock it was already sonic checked and it would have a sticker on the rear bellhousing flange stating the size it can go to if less than 4.500.
As far as the condition of it , don't stop at just changing the pistons , check EVERYTHING. Cummins was the LOW BIDDER and mopar got EXACTLY what they paid for ...
Arrow use to do them and they put out some junk..
they did the crate hemi also and put out junk
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Re: megablock?
[Re: JohnRR]
#1664178
08/27/14 08:05 PM
08/27/14 08:05 PM
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Joined: Aug 2003
Posts: 1,574
KOS
OP
pro stock
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OP
pro stock
Joined: Aug 2003
Posts: 1,574
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Quote:
Quote:
thx for the responses guys this is actually a MP 500 shortblock assembled at cummings when the where building MP crate engines.PN#5007665.forged crank and eagle h-beams but hyperutetic pistons.i was thinking if i could get a good deal on it i would replace the pistons with some nice forged units.just didnt want to buy it and find out the block wont go any bigger.sonic checking is probably out of the question until i purchase it and dissassemble.just wanted a heads up on any potential BS i might encounter.
If it's an assembled shortblock it was already sonic checked and it would have a sticker on the rear bellhousing flange stating the size it can go to if less than 4.500.
As far as the condition of it , don't stop at just changing the pistons , check EVERYTHING. Cummins was the LOW BIDDER and mopar got EXACTLY what they paid for ...
ok now the big question whats it worth?? brand new 2002
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Re: megablock?
[Re: MR_P_BODY]
#1664179
08/27/14 11:43 PM
08/27/14 11:43 PM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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Quote:
Quote:
Quote:
thx for the responses guys this is actually a MP 500 shortblock assembled at cummings when the where building MP crate engines.PN#5007665.forged crank and eagle h-beams but hyperutetic pistons.i was thinking if i could get a good deal on it i would replace the pistons with some nice forged units.just didnt want to buy it and find out the block wont go any bigger.sonic checking is probably out of the question until i purchase it and dissassemble.just wanted a heads up on any potential BS i might encounter.
If it's an assembled shortblock it was already sonic checked and it would have a sticker on the rear bellhousing flange stating the size it can go to if less than 4.500.
As far as the condition of it , don't stop at just changing the pistons , check EVERYTHING. Cummins was the LOW BIDDER and mopar got EXACTLY what they paid for ...
Arrow use to do them and they put out some junk..
they did the crate hemi also and put out junk
Raff, you are the first person I have heard say that , everything I read in the mags said differently , were the mag writers getting free hemis to say good things?
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Re: megablock?
[Re: KOS]
#1664180
08/27/14 11:44 PM
08/27/14 11:44 PM
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Joined: Jan 2003
Posts: 74,979
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,979
U.S.S.A.
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Quote:
ok now the big question whats it worth?? brand new 2002
Having personally owned a Cummins built crate hemi and then spending about 3.5k to fix it I would treat that engine as a CORE, $3000 tops ...
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Re: megablock?
[Re: KOS]
#1664182
08/28/14 12:07 AM
08/28/14 12:07 AM
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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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My 2001 Cummins built 528 was rebuilt by Ray Barton on Mopars tab to the tune of $5000. I agree treat this block as a core, the finish on the cyl walls is too rough, and will square edge the rings if run.
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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