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Need help identifying my hemi origins #2046390
04/04/16 04:55 PM
04/04/16 04:55 PM
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Hemi Steve Offline OP
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Hi all
I'm new to this board. Last fall I got a 73 Barracuda with a 528 Hemi crate motor. I'm trying to determine who built this crate motor. I believe the car was built prior to 2010. Being a 528 the block is not an original early one. The block does not have the freeze plugs on the front so as I understand it , it is not a World block either. I think that means it is a Mopar Performance Mega-Block. I am unable to get under the car to look at the casting number at this time. I do however have the numbers stamped on the front drivers side pad. Here's how it reads:

As viewed from the front "528" is stamped there right side up. Stamped upside down is "6169 XPT". That part is barely readable as if the block was lightly machined prior to assembly. The 528 stamp looks like it was done after the surface was machined.

Anyone have any idea what the 6169 XPT might mean?

Thanks

Steve

Re: Need help identifying my hemi origins [Re: Hemi Steve] #2046497
04/04/16 07:08 PM
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528 prior to the World block , more than likely a Cummins Recon , if it is be VERY AFRAID ...


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Re: Need help identifying my hemi origins [Re: Hemi Steve] #2046630
04/04/16 09:44 PM
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Am I correct that the World blocks can be identified by the presence of the freeze plugs on the front?

This particular engine has had some work done since it was originally built. The owner had the top end redone with an all new valve train with a crane roller cam, push rods, springs and roller rockers. It also has a Milodon 8 qt pan so soneone had a good look at everything. Don't know if the rotating assembly was taken apart at that time. This engine also has a cross ram setup and aluminum heads with a Mopar logo on the front of the casting so they are not Edelbrocks.

I know Arrow built engines also but I don't know what years that would be.

Also, is it fair to say that independent engine builders built 528's before the World blocks were available?

Steve

Re: Need help identifying my hemi origins [Re: Hemi Steve] #2046824
04/05/16 01:49 AM
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The 1st 500 or so 528's were built by Arrow. Then Cummins took over. The Cummins engines had many problems. Many if not most were so bad they to had to fixed immediately, to be used. So yes your engine is probably a Megablock from the sound of it and I'm sure it has been fixed if it's now running well.

Yes world blocks have the freeze plugs on the front and an oil pump passage on the front.

My Cummins built 528 has pad stampings similar to yours.

Last edited by HemiRick; 04/05/16 01:55 AM.

Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047048
04/05/16 01:04 PM
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Originally Posted By Hemi Steve


Also, is it fair to say that independent engine builders built 528's before the World blocks were available?

Steve


Not if it is a Mopar crate motor .

My Cummins Recon 426 was a MESS , every machined surface had to be touched, the only original parts on the heads are the head castings, all new parts including guide liners was needed.

The fact that someone was in that one is a good thing, but they needed to check everything.


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Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047185
04/05/16 03:50 PM
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Thanks for the responses.

I do not know for a fact that it's a Mopar crate motor as I have learned that independent builders built some also. They would have had to use a Mopar Mega-block and Mopar aluminum heads as I don't believe the Edelbrock heads were available at the time. Don't know when the Stage V heads came to the market but mine are from Mopar marked castings. The Engine runs great...no smoke, no funny noises. It's got a little over 7000 mi on it.

HemiRick:
Do you know when Arrow stopped building them? Also, when you get a chance could you look at your Cummins 528 and describe the format of the markings?
I'm going to guess that the 6169 could be a date code for 6-16-09 (a Tuesday). 2009 would be about the right time frame I think. No clue on the XPT part though.

JohnRR:
I have read elsewhere that the Cummins built engines were not good. In truth I've also read that people have had problems with Barton and Arruzza built engines but those builders stand behind their products. Did you know in advance that you were going to have to redo your Cummins motor or did you find out the hard way?

Steve

Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047304
04/05/16 07:13 PM
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I knew I was going to have to go in it, but not to the extent that I did.


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Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047319
04/05/16 07:33 PM
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My 528 was built by Indy Cylinder Head in 2000. It has the MP siamese block but Indy heads and intake.


'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong
Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047337
04/05/16 08:00 PM
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HemiSportFury:
Did Indy build engines that were sold by Mopar Performance? If so what years? Somewhere in the back of my brain I thought I read that they did but I must admit when it comes to these engines its hard to keep track of who built which engine and when did they do it.

Steve

Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047388
04/05/16 09:11 PM
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I never heard that Indy built MP crate motors, but I could be wrong on that. They were not building them in 2000 when I bought mine, anyway.


'64 Sport Fury, 528 Hemi, FiTech EFI, 4-speed, 4.10 Dana 60
'57 Belvedere 2dr sedan, current project in process
'19 Cherokee Trail Hawk Elite
'03 Ram 2500 CTD HO, 6-speed 214,000 miles and still going strong
Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047770
04/06/16 11:11 AM
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Originally Posted By Hemi Steve
HemiSportFury:
Did Indy build engines that were sold by Mopar Performance? If so what years? Somewhere in the back of my brain I thought I read that they did but I must admit when it comes to these engines its hard to keep track of who built which engine and when did they do it.

Steve


No Indy did not build for MP.

MP went with the LOWEST BIDDER and they got LOWEST BIDDER quality ...


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Re: Need help identifying my hemi origins [Re: Hemi Steve] #2047989
04/06/16 02:54 PM
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My 528 was rebuilt by Ray Barton under Mopars warranty. They paid him like $5000.

The markings on my pad are very similiar to yours large upright 528 with a smaller number upside down below it, my number is 02137 xxx. So I dont think your date code theory holds.


Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
Re: Need help identifying my hemi origins [Re: HemiRick] #2048303
04/06/16 09:09 PM
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HemiRick

OK, your number format is basically the same as mine so it looks like mine is a Cummins built engine. When did you get your engine? Did you get it straight from Mopar Performance? Did you have problems immediately or did you do a "defensive" tear down? What intake and carbs do you have? Did you keep the original cam or did Barton make improvements along with the rebuild...Dyno results??

Steve

Re: Need help identifying my hemi origins [Re: Hemi Steve] #2048493
04/07/16 12:15 AM
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Originally Posted By Hemi Steve
HemiRick

OK, your number format is basically the same as mine so it looks like mine is a Cummins built engine. When did you get your engine?

2000
Originally Posted By Hemi Steve
Did you get it straight from Mopar Performance?

Yes, well kinda Koller Dodge
Originally Posted By Hemi Steve
Did you have problems immediately or did you do a "defensive" tear down?

read this web page http://www.midsouthmopars.com/members/Rick/hemi.htm
Originally Posted By Hemi Steve
What intake and carbs do you have?

Running EFI a single 1000 CFM throttle body on M1 intake
Originally Posted By Hemi Steve
Did you keep the original cam or did Barton make improvements along with the rebuild...Dyno results??

Mopar would not pay Barton if we used a diff cam. I since replaced it with a solid roller.


[/quote]

Last edited by HemiRick; 04/07/16 12:16 AM.

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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