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How much hp can a 2004 mopar mega block handle. #2797357
07/16/20 11:36 AM
07/16/20 11:36 AM
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Wind Gap,Pa.
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Sammy Offline OP
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I just bought a iron mega block. Says 2004 date code.
Was going to be a 498ci.
How much can you throw at these BBs?
1st time with a BB.
Wanted a hemi but couldnt pass up this deal.

Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797365
07/16/20 11:57 AM
07/16/20 11:57 AM
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Morrow, OH
markz528 Offline
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I don't know but I just finished a 2001 block that makes 1060 hp and I have zero concerns.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797387
07/16/20 12:41 PM
07/16/20 12:41 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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I wouldn't worry. I make 860 to 880 hp and spin mine to 7500 rpm no serious problems in 17 years.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797414
07/16/20 01:17 PM
07/16/20 01:17 PM
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cudaman1969 Offline
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How do you tell the date? Just picked up a Hemi block and haven’t seen a date

Re: How much hp can a 2004 mopar mega block handle. [Re: cudaman1969] #2797440
07/16/20 02:06 PM
07/16/20 02:06 PM
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Sammy Offline OP
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I am looking to go Supercharger.
I'm not getting any younger so before I can't race anymore, I figure I'll spend the kids inheritence.
Looming for 2400 hp.

Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797444
07/16/20 02:15 PM
07/16/20 02:15 PM
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markz528 Offline
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Originally Posted by Sammy
I am looking to go Supercharger.
I'm not getting any younger so before I can't race anymore, I figure I'll spend the kids inheritence.
Looming for 2400 hp.


So you do need to ask!


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
Re: How much hp can a 2004 mopar mega block handle. [Re: cudaman1969] #2797445
07/16/20 02:16 PM
07/16/20 02:16 PM
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markz528 Offline
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Originally Posted by cudaman1969
How do you tell the date? Just picked up a Hemi block and haven’t seen a date


I don't know - I bought mine new in 2001 so I know it was 2001 vintage.


67 Coronet 500 9.610 @ 139.20 mph
67 Coronet 500 (street car) 14.82 @ 94 mph
69 GTX (clone) - build in progress......
Re: How much hp can a 2004 mopar mega block handle. [Re: markz528] #2797448
07/16/20 02:32 PM
07/16/20 02:32 PM
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ZIPPY Offline
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Pre-World are usually very difficult to tell the manufacturing date.

Even with the later World style, all we ever got was a machining date....Dalton wasn't required to stamp the blocks or
anything like that, so the casting date is a Mopar Mystery.


Rich H.

Esse Quam Videri




Re: How much hp can a 2004 mopar mega block handle. [Re: ZIPPY] #2797456
07/16/20 02:48 PM
07/16/20 02:48 PM
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fast68plymouth Offline
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Supercharged and 2400hp?

You should be looking for a better block IMO.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797462
07/16/20 02:58 PM
07/16/20 02:58 PM
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rickseeman Offline
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Originally Posted by Sammy
I am looking to go Supercharger.
I'm not getting any younger so before I can't race anymore, I figure I'll spend the kids inheritence.
Looming for 2400 hp.
I would think it would handle that.


2011 Drag Pak Challenger
Re: How much hp can a 2004 mopar mega block handle. [Re: fast68plymouth] #2797480
07/16/20 03:24 PM
07/16/20 03:24 PM
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Sammy Offline OP
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Originally Posted by fast68plymouth
Supercharged and 2400hp?

You should be looking for a better block IMO.



Like what?
I'm not too happy with the added weight up front but I was told that the cylinders don't move around like a aluminum block.

Re: How much hp can a 2004 mopar mega block handle. [Re: rickseeman] #2797481
07/16/20 03:26 PM
07/16/20 03:26 PM
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Sammy Offline OP
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Originally Posted by rickseeman
Originally Posted by Sammy
I am looking to go Supercharger.
I'm not getting any younger so before I can't race anymore, I figure I'll spend the kids inheritence.
Looming for 2400 hp.
I would think it would handle that.







These are uncharted waters for me. Not sure what a good mopar performance mega block can handle.

Re: How much hp can a 2004 mopar mega block handle. [Re: cudaman1969] #2797487
07/16/20 03:43 PM
07/16/20 03:43 PM
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second 70 Offline
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Originally Posted by cudaman1969
How do you tell the date? Just picked up a Hemi block and haven’t seen a date


I don't know for sure but my mega hemi block has 11 94 on top pad and 6K29 on side. So it could be Nov. 94 or might be a 1-19-2004 or neither. lol

Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797492
07/16/20 03:53 PM
07/16/20 03:53 PM
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Have a nice day

Last edited by polyspheric; 07/17/20 11:39 AM.

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Re: How much hp can a 2004 mopar mega block handle. [Re: polyspheric] #2797510
07/16/20 04:42 PM
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cudaman1969 Offline
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Those top fuel aluminum blocks handle 10,000 hp are they any good?

Re: How much hp can a 2004 mopar mega block handle. [Re: polyspheric] #2797511
07/16/20 04:43 PM
07/16/20 04:43 PM
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Originally Posted by polyspheric
Can't answer the question, but as I understand it the survival of a block depends in part on how the power is made.
Supposedly nitrous is the worst, followed by normally aspirated (high static CR, high RPM), then boosted.
I've heard (but not agree at this point) that twin screw (Whipple, Autorotor) is the roughest of the boost group, turbo the softest, but no actual results.
2400 sounds dangerous, but then I'm old.

At that power level I can't see aluminum as safe weight saving is erased by worries about water leaks, ring seal, inconsistent oil pressure, distortion. Those serious-but-budget LSX engines use factory iron blocks. My 183" Toyota L6 iron block is supposed to be safe at 1,500.


Why is nitrous "the worst"?


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: How much hp can a 2004 mopar mega block handle. [Re: cudaman1969] #2797514
07/16/20 04:50 PM
07/16/20 04:50 PM
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Originally Posted by cudaman1969
Those top fuel aluminum blocks handle 10,000 hp are they any good?

iagreeLook at all the big HP hemis running pro mod and every other class...all aluminum blocks.
The chevy LS guys are using aluminum blocks more and more too. One of the fastest stock block LS cars in the country is an aluminum 5.3 based build. I helped a friend with one he took to Lights Out at SGMP.


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
Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797517
07/16/20 05:16 PM
07/16/20 05:16 PM
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Originally Posted by Sammy

These are uncharted waters for me. Not sure what a good mopar performance mega block can handle. [/quote]
I don't think I would want to be the test mule and do R&D for your deal down tsk 2400 HP sounds like it is directly in the danger zone for standard cast grey iron
I have a new Koleno high nickel block that I want to use to build a N/A Top Sportsman motor that will make north of 1000 HP with a set of B1-MC and dual dominators on a tunnel ram, I'm thinking it is good to 1800+HP.
I have a new KB aluminum wedge block on order , Tim at FHO tells me it is good to 4000+HP work

Last edited by Cab_Burge; 07/16/20 05:17 PM.

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Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797522
07/16/20 05:29 PM
07/16/20 05:29 PM
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Re: How much hp can a 2004 mopar mega block handle. [Re: Sammy] #2797523
07/16/20 05:33 PM
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Originally Posted by Sammy
Originally Posted by fast68plymouth
Supercharged and 2400hp?

You should be looking for a better block IMO.



Like what?
I'm not too happy with the added weight up front but I was told that the cylinders don't move around like a aluminum block.

See if you can get in contact with some top alcohol engine builders. They will know what will work and more importantly for how long.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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