331 or 347?? - Page 2 - MustangForums.com

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5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

331 or 347??

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Old 06-23-2006, 09:33 PM
  #11  
Bad Karma
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Default RE: 331 or 347??

Very nice. What SB did you go with?? I like the Shortblock route as well...plug ans play for the most part.

Thanks,
Ivan
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Old 06-23-2006, 10:21 PM
  #12  
94RoadRacerGT
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Default RE: 331 or 347??

Call this Man.

661-257-0101 Tell him you got his number from the DeShongs. Ask for Jim. I dont know if you have heard of Jim Grubbs Motorsports in so. cal. but he knows his stuff. He pumps motors out all of the time and has built motors for members in my club as well as family friends. I plan on getting my motor to him end of summer to have it built to a 331. You tell him what you want and he can give you a heads up with what you may want or not want to go with.
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Old 06-23-2006, 10:24 PM
  #13  
Bad Karma
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Default RE: 331 or 347??


ORIGINAL: 94RoadRacerGT

Call this Man.

661-257-0101 Tell him you got his number from the DeShongs. Ask for Jim. I dont know if you have heard of Jim Grubbs Motorsports in so. cal. but he knows his stuff. He pumps motors out all of the time and has built motors for members in my club as well as family friends. I plan on getting my motor to him end of summer to have it built to a 331. You tell him what you want and he can give you a heads up with what you may want or not want to go with.
Very nice! Thanks.

You got any idea on what parts he's used and what kind of packages/prices some of your buddies had done?

Thanks,
Ivan
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Old 06-23-2006, 10:46 PM
  #14  
FullAuto
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Default RE: 331 or 347??

I wouldn't spend the money on a mail order shortblock unless you are going with a REALLY big name like Keith Craft, Bennett Racing, etc. I'd just buy a kit and have a local reputable machine shop do all the work for you. It's much easier working with a local company in case of problems then someone out of state.

Get a 5.315" rod 347 kit. Rod ratio arguements will never be proven to any degree of certainty between these two motors. No one can come here and throw out a blanket statement that a 331 will last "x" amount of miles longer than a 347. They will both last as long as the driver allows them to. You will long pass the limits of the stock block with upgrades on either motor before you wear them out.
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Old 06-23-2006, 11:21 PM
  #15  
94RoadRacerGT
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Default RE: 331 or 347??

Check out this link:

http://www.allmustangandfordclub.com...nMitchell.html

this is the president of the Mustang club Im in. This is a great setup. You can call him and ask him any questions you have. He may not be local for you but he will give honest answers and let you know what combos are good. He can let you know what works for what. Jim Grubbs has a big reputation here in So. Cal. and has built just about everything. I hope that helps.
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Old 06-24-2006, 12:06 AM
  #16  
tinman
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Default RE: 331 or 347??

I voted for the 347 kit.
Reason is that I've always had a GOOD machine shop do the machine work and balancing. Then I put it togather myself.
The block grinding I'd do myself.
The story about the rings on the 347 was resolved several years ago by the quaility type engine kit folk's.
A quality engine kit is the only one I'd consider like from DSS or Coast. Kieth Craft has nice things too....
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Old 06-24-2006, 12:27 AM
  #17  
TAPOUT
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Default RE: 331 or 347??

Everytime I get in my stang with the 347, it makes me warm inside....
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Old 06-24-2006, 03:10 AM
  #18  
Bad Karma
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Default RE: 331 or 347??


ORIGINAL: TAPOUT

Everytime I get in my stang with the 347, it makes me warm inside....
What 347 package you got?? From who??


-Ivan
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Old 06-24-2006, 03:11 AM
  #19  
Bad Karma
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Default RE: 331 or 347??


ORIGINAL: tinman

I voted for the 347 kit.
Reason is that I've always had a GOOD machine shop do the machine work and balancing. Then I put it togather myself.
The block grinding I'd do myself.
The story about the rings on the 347 was resolved several years ago by the quaility type engine kit folk's.
A quality engine kit is the only one I'd consider like from DSS or Coast. Kieth Craft has nice things too....
Block grinding yourself?? What do you personally use??

-Ivan
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Old 06-24-2006, 10:34 PM
  #20  
tinman
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Default RE: 331 or 347??

Careful work with an air powered die grinder and some carbide tools will it up in a short time...
There is a tool thats a template being sold on E-bay that makes it real easy....
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