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#1
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Crate Hemi opinions 528 vs 472
Which is better in your opinions for a Pro Street car that is a very driven 3200 pound car?
Why? |
#2
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You need to provide a little more info if you want meaningful feedback. Auto or manual trans. What will the car be used for -- daily driver or show car? What rear end? Etc. pdavis
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#3
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which is better
Screw it, YOU CAN NEVER HAVE TOO MANY CUBES!
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#4
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you don't plan on leaving either of them naturally aspirated do you? nothing like a blown hemi
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#5
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I have a 472" crate motor in my Cuda. So much torque you can't get the car to hook up. I can't imagine trying to get the 528 to hook up. pdavis
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#6
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The 472 is a regular water jacket block. The 528 is a siamesed block and might run hotter on the street. I would go with the 472 and then supercharge it if it wasn't fast enough.
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#7
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RDABIKE, the 472 is a siamese block also. I can only tell you from my own experience -- it does not run hot! pdavis
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#8
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That's good to hear. I was told by my Mopar Performance dealer that the 472 was the same block as the std 426, but with a stroker crank and that the 528 used the siamese block and a stroker crank. It's good to know that the siamese blocks won't run hot on the street.
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#9
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Yes, there seems to be a lot of mis-information on these crate motors. The only one that is not a siamese block is the 426 crate motor. Both the 472 and the 528 are siamese blocks. I guess anything can over heat if you get to radical with the innards? pdavis
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#10
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Yo Marc. Muscle Motors says do not worry about the siamese block. But what happened to the Ray Barton Hemi I was going to deliver to you?
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#11
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If you can afford a hemi, go with the biggest. There is no such thing as too much power, just not enough traction!.........djs
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#12
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Well TL.... the ENGINE was what I expected. The SELLER was a total FREAK.
I wrote off the deposit I sent him. Ray Barton told me to "shove his distributors up his ass". Guess he wasn't in love with the guy either.... LOL The car is a 3100 pound STREET/STRIP car, with a 6" setback engine, a full frame and cage (will be 7.50 legal) and a four link rear set-up with Koni coil-overs. It will be driven regularly- not a "to and from shows" thing, but a DRIVEN street car. It will get a regular pounding, I'm not bashful with the gas pedal. Rance Baxter ( www.rancefi.com ) is doing an EFI conversion on a Hilborn stack injection set-up for me. I'm going this route for the drivability. I've heard sooooo many 472/528 crate engine stories it's hard to sift through them all. I am just looking for pros and cons I guess? |
#13
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I have heard about the same quality control issues between the 472 and 528 so ........
You have a four link and coil overs etc. so traction should not be the problem. ThatĀ“s why I recommend the 528" As said "you can not have too much power" NEVER ! Kimm |
#14
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Aside from the rocker adjusters, what else have you (or anybody else) heard?
I don't mind stripping it down if need be, but I also don't want to waste my time! |
#15
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scraps from the machining inside,
clearances, toleranses too tight or too loose, oil pick up tube hacked the way that oil donĀ“t go through.... Last one I heard from the other Mopar board just put his 528" in and it rocks..... But those who have had troubles have had long fights with ma about warranties..... I would not dare to start one up without inspecting ! Kimm |
#16
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I've seen rag fuzz on pistons, and heard the rod side clearance seems to be a question.
I've seen photos of valves coverd in aluminum debris, but it's hard to believe, to be truthful. Quite a bit of material. The oil tube is not a concern to me as I have to change it anyways, I need a rear sump pan for my car. I've also heard concerns about the actual aluminum used in the heads. Porousity concerns etc. I have heard they make awesome power too. I hope so! |
#17
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Well we all have seen and heard about the different kind of problems !
Now how much do you know of cases where everything has been right from the start ?? How much crate Hemis has Mopar made ? And sold ? I mean it would be better for you to know how big risk you take if you do not disassemble the whole engine and put it together again..... every 10th is bad, every 100th or..... Good for you is that you will atleast take the oil pan away,,, you can atleast see and check something...... How big a risk are you willing to take ?? Kimmo |
#18
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My 472 had two issues. The crane rocker adjusters were hardened incorrectly and broke. MP handled it the replacement parts superbly and lived up to the warranty -- no problem. By the way, I did the same thing. Completely broke down the motor and put it back together again. It could have been a lot cleaner on the inside. Otherwise she is running great. I have about 250 miles on the motor now with no issues. pdavis. Here are a few pictures. pd
http://photos.yahoo.com/bc/davispres...i+cuda&.view=t |
#19
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I think you are missing my point KM. I want opinions and feedback.
If you know how many crate Hemis were made and how many were sold, post the numbers. Or the problem cases right from the beginning. I am looking for the problems that PERSIST, so I know what to look for / buy ahead of time. I HAVE to change the pan, which is why I said I would get a "free" look at the bottom end. I am willing to take NO risks, which is why I will most likely strip the engine and have tales to tell of my own! davisp- Aside from the rocker adjusters, Any problems, parts/ clearances etc? The engine runs well? Pulls strong? Is it what you would think it should be? Thanks |
#20
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I forgot to mention that the rod to journal side clearance was wider than the factory specs. call for but the guys at Eagle, who make the MP rods, assured me that this was correct because of the way their rods expand when the engine is at normal operating temperature. pd
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#21
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Marc, in a word the motor is awesome. Torque,torque,torque. Runs clean and cool and sounds like you expect a hemi to sound through the exhaust. Other than the rocker arm adjusters and the rod to journal side clearance there were no problems. I am quite happy -- I strongly suspect that you will be too! pd
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#22
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Well I *hope* I am happy......
Hemi_Belvedere (Kasper) is my neighbour, he's running a 472 soon. I will probably tear mine down and take a peek, can't resist, but if everything turns out good I think it will be a load off both our minds! LOL I am in the middle of getting a Hilborn stack injection converted to sequential fired multiport EFI. I think it should tame the engine down considerably in terms of drivability. Did you measure the rod side clearance on you engine? How many miles have you put on so far? |
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