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Re: NOS Block 2468330-M ID?
[Re: PJSIXPACK]
#2710293
10/27/19 01:27 AM
10/27/19 01:27 AM
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Joined: Aug 2003
Posts: 43,099
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,099
Bend,OR USA
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That looks like a early Mega wedge water block to me  if you buy it I would have it sonic tested first before deciding what to do with it. One of the local ex ,Mopar drag racers (he retired due to health reasons) had several of those blocks and had one split a cylinder wall bore out to 4.500, he ran several of the same blocks at 4.440 and didn't have any cylinder wall failures at that size  IHTHs 
Last edited by Cab_Burge; 10/27/19 09:44 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: NOS Block 2468330-M ID?
[Re: PJSIXPACK]
#2710339
10/27/19 10:46 AM
10/27/19 10:46 AM
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Joined: Feb 2014
Posts: 1,696
central il.
second 70
top fuel
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top fuel
Joined: Feb 2014
Posts: 1,696
central il.
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My guess is it's a P5007671 wedge mega block. Might be a unfinished block I can't tell from pictures if lifter bores are finished. It is a Motor Castings foundry block. It's the only one I found listed with 2 bolt mains. Zippy is the guy that would know more but I haven't seen him post in a while.
Mike
Last edited by second 70; 10/27/19 10:57 AM.
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Re: NOS Block 2468330-M ID?
[Re: PJSIXPACK]
#2710348
10/27/19 11:17 AM
10/27/19 11:17 AM
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Joined: Feb 2014
Posts: 1,696
central il.
second 70
top fuel
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top fuel
Joined: Feb 2014
Posts: 1,696
central il.
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I am being offered a NOS block with a Casting number of 2468330-M It has 8A23 with a 27 under it It is a 4.25" bore with 2 bolt mains. 413, 426 Wedge or a 440 block? It has the extra material around the Lifter bores. Thank you in advance. He is asking $2,000.00. PJ The extra material around lifter bores is normal for a mega block.
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Re: NOS Block 2468330-M ID?
[Re: Cab_Burge]
#2710377
10/27/19 01:13 PM
10/27/19 01:13 PM
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Joined: Mar 2012
Posts: 20
Terre Haute Indiana
PJSIXPACK
OP
member
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OP
member
Joined: Mar 2012
Posts: 20
Terre Haute Indiana
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That looks like a early Mega wedge water block to me if you buy it I would have it sonic tested first before deciding what to do with it. One of the local ex ,Mopar drag racers (he retried due to health reasons) had several of those blocks and had one split a cylinder wall bore out to 4.500, he ran several of the same blocks at 4.440 and didn't have any cylinder wall failures at that size IHTHs Thank you. As far as you know, can it be bored to 4.32 or 4.350 safely?
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Re: NOS Block 2468330-M ID?
[Re: second 70]
#2710378
10/27/19 01:14 PM
10/27/19 01:14 PM
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Joined: Mar 2012
Posts: 20
Terre Haute Indiana
PJSIXPACK
OP
member
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OP
member
Joined: Mar 2012
Posts: 20
Terre Haute Indiana
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My guess is it's a P5007671 wedge mega block. Might be a unfinished block I can't tell from pictures if lifter bores are finished. It is a Motor Castings foundry block. It's the only one I found listed with 2 bolt mains. Zippy is the guy that would know more but I haven't seen him post in a while.
Mike Thank you, much appreciated. PJ
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Re: NOS Block 2468330-M ID?
[Re: second 70]
#2710383
10/27/19 01:50 PM
10/27/19 01:50 PM
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Joined: Mar 2012
Posts: 20
Terre Haute Indiana
PJSIXPACK
OP
member
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OP
member
Joined: Mar 2012
Posts: 20
Terre Haute Indiana
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My guess is it's a P5007671 wedge mega block. Might be a unfinished block I can't tell from pictures if lifter bores are finished. It is a Motor Castings foundry block. It's the only one I found listed with 2 bolt mains. Zippy is the guy that would know more but I haven't seen him post in a while.
Mike So is the P5007671 a Max Wedge block rather than a 440?
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Re: NOS Block 2468330-M ID?
[Re: PJSIXPACK]
#2710484
10/27/19 09:51 PM
10/27/19 09:51 PM
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Joined: Aug 2003
Posts: 43,099
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,099
Bend,OR USA
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That looks like a early Mega wedge water block to me if you buy it I would have it sonic tested first before deciding what to do with it. One of the local ex ,Mopar drag racers (he retried due to health reasons) had several of those blocks and had one split a cylinder wall bore out to 4.500, he ran several of the same blocks at 4.440 and didn't have any cylinder wall failures at that size IHTHs Thank you. As far as you know, can it be bored to 4.32 or 4.350 safely? Have it sonic tested first before deciding One of my customers bought one of the early Hemi Mega blocks rough bored to 4.180, he wanted it to make it into a pump gas blown Hemi motor with a 10-71 roots blower with two big Dominator blower carbs, I had it sonic tested first and we decided to bore it to 4,25 and increase the stroke from 3.75o to 4.375 to get more C.I. On your deal I would leave at least .200 wall thickness for future builds to start with  Check and think twice before deciding
Last edited by Cab_Burge; 10/28/19 09:13 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: NOS Block 2468330-M ID?
[Re: second 70]
#2710620
10/28/19 01:37 PM
10/28/19 01:37 PM
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Joined: Mar 2012
Posts: 20
Terre Haute Indiana
PJSIXPACK
OP
member
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OP
member
Joined: Mar 2012
Posts: 20
Terre Haute Indiana
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[quote=PJSIXPACK So is the P5007671 a Max Wedge block rather than a 440?
No not neither. It's an RB performance block. So with it being rough bored from the Factory to 4.25 can I have it taken out to 4.32?
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Re: NOS Block 2468330-M ID?
[Re: Cab_Burge]
#2710621
10/28/19 01:40 PM
10/28/19 01:40 PM
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Joined: Mar 2012
Posts: 20
Terre Haute Indiana
PJSIXPACK
OP
member
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OP
member
Joined: Mar 2012
Posts: 20
Terre Haute Indiana
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That looks like a early Mega wedge water block to me if you buy it I would have it sonic tested first before deciding what to do with it. One of the local ex ,Mopar drag racers (he retried due to health reasons) had several of those blocks and had one split a cylinder wall bore out to 4.500, he ran several of the same blocks at 4.440 and didn't have any cylinder wall failures at that size IHTHs Thank you. As far as you know, can it be bored to 4.32 or 4.350 safely? Have it sonic tested first before deciding One of my customers bought one of the early Hemi Mega blocks rough bored to 4.180, he wanted it to make it into a pump gas blown Hemi motor with a 10-71 roots blower with two big Dominator blower carbs, I had it sonic tested first and we decided to bore it to 4,25 and increase the stroke from 3.375 to 4.375 to get more C.I. On your deal I would leave at least .200 wall thickness for future builds to start with Check and think twice before deciding Thank you. I will have it Sonic tested before I decide to buy. Is the $2,000 a decent price for the block?
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