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Trying to ID a cam #6492
Hello all! I picked up a Mercruiser engine, a 350 Mag I believe. It is a GM 5.7 Vortec. I am trying to find out something about the cam
Serial # is hard to read but looks like 1A602321. It could be a 350 mag engine from 2007, the boat it came from was a 2007. It is a hydraulic roller with Vortec heads I can't post pics until I get 10 posts 6492 ENG 07 321 16:32 markings on the end of the cam. *** May be GM 94666492 *****Mercruiser 431-866022T Anyone recognize it? |
Found a little more info
Intake lift is 7.62mm or .300 in Exhaust lift 7.87 mm or .310 in No luck on duration yet. |
Is there anyone out there familiar with this cam?
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Originally Posted by homeboy
(Post 4649602)
Found a little more info
Intake lift is 7.62mm or .300 in Exhaust lift 7.87 mm or .310 in No luck on duration yet. |
It is a GM part number no doubt and Crane makes a .452/.465 roller # 104224 so it could be the same cam
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call the automotive machine shops in your area and ask them if they have a cam doctor.a lot of shops have this and it will tell you all aspects of the cam.
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Still no luck on this cam. Crane said they did not make it. No cam doctor in my area that I can find.
Do the Mercury cams have the GM part number on them or what? |
tnoutdoorsman meet CFM:)
Yeh, I just got an e-mail from there stating your response.Been along time I've seen something from there. LOL. I haven't seen those other two(on the thread you responded to) on the boards in many years. 99.9% of us left SlowWake a few hundred years ago. :) |
I really want to know what this is! I would like to use it in my MPFI 383 Blazer convertible but I don't want to waste time on a dud. If it is around 214 intake I would like it, less than 210 and I may want something else>
I thought it would be cool having such a rare cam in a rare truck |
Originally Posted by homeboy
(Post 4672402)
I thought it would be cool having such a rare cam in a rare truck
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Originally Posted by SB
(Post 4672408)
What? :lolhit:
All these cams are traced back to a GM truck cam, don't be naive :party-smiley-048: |
Not following.
The cam you have is a run-of-the-mill GM industrial/marine stock POS. There's nothing rare about it unless you'd want to cut it up into a few pieces to make some paperweights out of it. If you wanted to stay with a "stock" roller cam that would work for a 383 injected truck motor, you might want to consider an LT1/LT4 cam. Your question may get more useful answers if asked on a truck or 4x4 forum (Pirate4x4c.com is a great place!). Good luck. TZ |
Originally Posted by TomZ
(Post 4672672)
Not following.
The cam you have is a run-of-the-mill GM industrial/marine stock POS. There's nothing rare about it unless you'd want to cut it up into a few pieces to make some paperweights out of it. If you wanted to stay with a "stock" roller cam that would work for a 383 injected truck motor, you might want to consider an LT1/LT4 cam. Your question may get more useful answers if asked on a truck or 4x4 forum (Pirate4x4c.com is a great place!). Good luck. TZ |
Originally Posted by homeboy
(Post 4672409)
All these cams are traced back to a GM truck cam, don't be naive :party-smiley-048:
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Originally Posted by SB
(Post 4672682)
Huh ? :lolhit:
Which ones aren't GM truck cams? |
Originally Posted by homeboy
(Post 4672679)
Well it sounds like you know something about this cam that the rest of us don't please share.
It's actually a Merc copy of a Crane Compucam/Powermax 2032. 452/465 lift, 214/220 @ 050 112 LSA. So while not a stock POS cam as I mentioned earlier, it isn't much of a performance upgrade to anything. There may be an old Corvette or Camaro guy that would want it for a TPI set up. Will it work in your 383? Maybe. It is certainly not a rare cam. |
Originally Posted by TomZ
(Post 4672688)
I stand corrected some.
It's actually a Merc copy of a Crane Compucam/Powermax 2032. 452/465 lift, 214/220 @ 050 112 LSA. So while not a stock POS cam as I mentioned earlier, it isn't much of a performance upgrade to anything. There may be an old Corvette or Camaro guy that would want it for a TPI set up. Will it work in your 383? Maybe. It is certainly not a rare cam. It must be pretty rare because only a handful of people have ever touched one and even less know the specs. I don't think the duration is that high. ETA: They used it in a 2008+ MPFI boat engine so I doubt it is 1980s technology and has more lift than the HT383/350 Ramjet cam so it may be a great cam for my use. |
The serial number you posted iindicated a late 90’s 5.0/5.7./6.2 Merceuiser small block. The last cam option listed for that engine matches up with the cam from Crane.
Crane went out out of business in the mid-late 2000’s, and more than likely they do not have records showing that they made it for GM/Merc. If iyou don’t believe it, ship it out to someone to have it spec’d. |
Originally Posted by TomZ
(Post 4672702)
The serial number you posted iindicated a late 90’s 5.0/5.7./6.2 Merceuiser small block. The last cam option listed for that engine matches up with the cam from Crane.
Crane went out out of business in the mid-late 2000’s, and more than likely they do not have records showing that they made it for GM/Merc. If iyou don’t believe it, ship it out to someone to have it spec’d. The lady at Mercruiser tech support told me that this engine was built January 15, 2008 and was a 350 Mag MPFI. That corresponds with the big 07 cast into the heads as the casting date for them. Crane has all the records for all of the other cams they made for GM and Mercury. Turns out they did make the 377 Scorpion cam but not the 6.2 or this particular 5.7. Therefore, everything you posted so far has already been disproven. Corrected sn 1A302392. Took lots of work to be able to get it off the plate. |
Is this you opening an old thread on Speedwake: https://www.speedwake.com/forums/9-t...s/25157?page=2 ? On that thread RMBuilder aka Bob Madara (one of our most trusted cam gurus on here on OSO) gave the specs for the cam that you have. They are a match for the lobe lifts that you measured. The probability of it being something else other that what’s stated here as well as on that speedwake thread are pretty much zero. Crane did in fact grind cams for the OEMs. I don’t even know why I’m arguing with you. If the measurement is what you say it is (and exactly how did you measure the lobe lift?) then it is the cam I said it was, though it is funny that it ended up in a 5.7 (that cam is meant for a 6.2). Post some pics of the cam and motor it came out of. |
I don't know why you are arguing either since you are only regurgitating the wrong info that has been spread already.
No, Bob gave the specs for a Crane cam and this is not a Crane cam. Howard's and Herbert's both have a cam with .450/.465 lift. Since I measured .300 that is exactly .450 when multiplied by a 1.5 rocker arm, not .452 as the Crane cam measures. Crane did not grind this cam. Period, end of story. I sent them a pic of it and they stated as much. Feel free to call them tomorrow and ask for Robert, even though he will probably answer the phone. I measured it with some very good calipers, more than once. This is a classic GM cam marking pic serial plate Isky makes one too |
And
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Dispelling the myth that a .450/.465 cam was never installed into a 5.7 (350) Mercruiser. This is straight from the manual that Mercury sent me. Notice that the 5.7 and 6.2 have the same specs on lift even though the part numbers on the cams are different. I suspect that the 6.2 has more duration but they were stuck at .465 lift with the factory Vortec limitations
https://cimg5.ibsrv.net/gimg/www.off...be44d8f0a1.jpg |
Read this: Guess Who Made Your Cam from nastyz28.com Guess who made your cam? | NastyZ28.com https://www.kendrick-auto.com/chevro...ory-cam-specs/ My bet... your can is an OEM copy of the Crane Compucam I mentioned previously. While the second link does not mention your cam, it does prove the point of Crane being the supplier of performance cams for GM. Tie the two together, and think you’ll have your answer. |
This is a really weird thread. Atleast no animals where hurt in the making of it.
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I blame it on the winter. |
Just tell everyone that its a full race cam for a small block and be done with it.............
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Originally Posted by SB
(Post 4672827)
This is a really weird thread. Atleast no animals where hurt in the making of it.
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Originally Posted by TomZ
(Post 4672824)
Read this: Guess Who Made Your Cam from nastyz28.com Guess who made your cam? NastyZ28.com https://www.kendrick-auto.com/chevro...ory-cam-specs/ My bet... your can is an OEM copy of the Crane Compucam I mentioned previously. While the second link does not mention your cam, it does prove the point of Crane being the supplier of performance cams for GM. Tie the two together, and think you’ll have your answer. So in a nutshell we still got nothing! My degree wheel will be here Sunday and I will do my best to figure out the duration |
Originally Posted by F-2 Speedy
(Post 4672832)
Just tell everyone that its a full race cam for a small block and be done with it.............
I don't care about that. I want to know what it is and if it will be good for my use |
My degree wheel made it in. With low lighting and cold temps I am coming up with 205-207 intake and 212-213 exhaust duration, I'll spend a little time in the daylight figuring it out tomorrow. Absolutely no way it is going to be that Crane with 214/220
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