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03-24-2009, 10:16 PM
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#31
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Senior Member
Join Date: Apr 2008
Posts: 379
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in for that 331/347 debate.
Ive built more than my share of SBFs by now, and i do generally suggest the 331s. The 347 rod angle isnt the best, but it will work, For how long is a matter of personal opinion. I know plenty of people who swear by them, but i wouldnt run a 347 in something i was going to drive regularly. For a track car/fun toy, its fine. Just dont expect any great amount of longevity from it. Just my 2c.
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03-24-2009, 10:28 PM
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#32
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Resident Avatar Gambler
Join Date: Nov 2006
Posts: 5,997
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Quote:
Originally Posted by Sonic03SVT
in for that 331/347 debate.
Ive built more than my share of SBFs by now, and i do generally suggest the 331s. The 347 rod angle isnt the best, but it will work, For how long is a matter of personal opinion. I know plenty of people who swear by them, but i wouldnt run a 347 in something i was going to drive regularly. For a track car/fun toy, its fine. Just dont expect any great amount of longevity from it. Just my 2c.
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Yeah, Ron drives his Cobra a lot, so the 331 is definitely the better choice for him. Can someone please explain to me how rod angle works? I can visualize it to an extent, but I'm not exactly clear on what a bad rod angle means exactly? |
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03-24-2009, 10:42 PM
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#33
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FWD = FAIL
Join Date: Apr 2008
Posts: 523
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03-24-2009, 10:45 PM
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#34
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Resident Avatar Gambler
Join Date: Nov 2006
Posts: 5,997
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Quote:
Originally Posted by heypal
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Excellent - thank you  |
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03-24-2009, 11:32 PM
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#35
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FWD = FAIL
Join Date: Apr 2008
Posts: 523
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anytime
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03-25-2009, 02:43 AM
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#36
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by BRUTAL64
. . . Damn, you need to beat a ZR1. That would be sooooo coooool!  |
No Brutal, it wouldn't be "cool" . . . it'd be pretty awesome if a regular Joe, or Ron in this case, pieced together an overall reliable daily driver that could even *think* to run with something like a ZR1. The keys here are, reliable daily driver, vaguely plausible gas milage, something like handling . . . something somehow comparable. It ain't all that mystical to make massive power and go fast . . . especially from a roll. Creating a "package" is where the art and magic is at.
I think we can agree though, what GM has done with the ZR1 at just over $100k for a production car is astounding. I hope it ain't their swan song. 
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03-25-2009, 09:24 AM
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#37
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Internet Tough Guy
Join Date: Jun 2008
Posts: 1,545
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Don't be a pussy  ! put some forged internals and spray that bitch with the blower! I'm going to be in Fontana on friday saturday and Sunday if you need some more motivation ! |
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03-25-2009, 09:40 AM
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#38
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Neanderthal
Join Date: Mar 2008
Posts: 5,320
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Quote:
Originally Posted by Sonic03SVT
in for that 331/347 debate.
Ive built more than my share of SBFs by now, and i do generally suggest the 331s. The 347 rod angle isnt the best, but it will work, For how long is a matter of personal opinion. I know plenty of people who swear by them, but i wouldnt run a 347 in something i was going to drive regularly. For a track car/fun toy, its fine. Just dont expect any great amount of longevity from it. Just my 2c.
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One of guys, here at work, has a 347 that he uses as a daily driver. He's been here 3 years and drives it every day. I haven't built a 347 myself, but don't see a problem with the rod angle/ratio as long as you keep the piston speed within limits. But, thats just me. 
Ben:
It STILL would be cool to out run a ZR1 with a vehicle that is less that $40,000 or so.
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64 Vette Roadster 400 ci
1990 F150 351 ci SuperCharged
48 Harley Pan Head 76 ci
2016 Nissan Altma
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03-25-2009, 02:24 PM
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#39
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Graphics B*tch
Join Date: Dec 2006
Posts: 2,197
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Quote:
Originally Posted by Vettezuki
I think we can agree though, what GM has done with the ZR1 at just over $100k for a production car is astounding. I hope it ain't their swan song. |
If I remember correctly the Ford GT was about $135K (plus the the mark-up I know) and it in itself was a pretty awesome car. I would not put it in the overall performance league as the ZR1 but in styling I think it wins hands down, but then again I am a Ford guy. I think the "big 3" can make some VERY impressive performance cars but many still only see what comes from across the pond as worth the cost.
Sorry about the highjacking!
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Adam
'13 Ford Fusion SE (2.0L EcoBoost)(Conor)
'03 Zinc Yellow Mach 1(Yazmine)
290HP / 305TQ
1/4 mile ET: 13.28 @ 101MPH (1.867 60')
'99 White F-150 (4.6L)(Bud Jr.)-gone but never forgotten
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03-25-2009, 02:56 PM
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#40
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Neanderthal
Join Date: Mar 2008
Posts: 5,320
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Quote:
Originally Posted by heypal
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I finally got to read your link. Just as I said before, The 1.58 ratio is not that much of a problem. The 331 has 1.66 and the 347 is 1.58. That is not that much in difference.
Case in point; In 1988 I built my first 400 with a 5.7 rod --rod ratio around 1.56. In 2006 I pulled it down and the piston skirts were PERFECT. No sign at all of undue loads. I drove that engine hard ( to 7200 rpm ) and it was a daily driver.
I think and know the rod ratio of 1.58 will be no problem.
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64 Vette Roadster 400 ci
1990 F150 351 ci SuperCharged
48 Harley Pan Head 76 ci
2016 Nissan Altma
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