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Old 10-10-2014, 12:08 AM   #1
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How much boost can stock internals hold on a 3v 4.6??


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Old 10-10-2014, 01:47 AM   #2
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I heard that if you do any kind of boast molding you must upgrade. But if you want a straight answer.. 490hp+
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Old 10-10-2014, 05:56 AM   #3
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It's not a straight answer really. Different FI applications make different power with different levels of boost. The roush TVS supercharger has me at 450rwhp on only 5 psi. If you run the m90 you need to run the blower all out to make 420rwhp. Much over 450rwhp you need to forge internals


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Old 10-10-2014, 08:17 AM   #4
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Really 450 on 5 psi. And that's at the wheels? Find it hard to believe! You have a boost gauge?


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Old 10-10-2014, 08:48 AM   #5
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ID:	167681 yes I do have a boost gauge. 450 at the wheels is not abnormal from a tvs. Brenspeed sells a 3.5 pulley that makes 480 at the wheels.


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Old 10-10-2014, 08:50 AM   #6
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Look at the size of that pulley!! It's huge. No way you can make more than 5psi with a boulder like that on the snout. Also I had mine dyno tuned rather than the roush tune.


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Old 10-10-2014, 08:58 AM   #7
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That's at 8psi I believe. I'm contemplating upgrading to that pulley with the gt500 fuel pumps. Brenspeed really feels that their 3.5 pulley its "safe" on the stock components. Don't know if I'm gonna upgrade to that and run till she blows then build a new block, or forget the 3.5 pulley forge the bottom end and then go with the 2.6 pulley. Tvs should be maxed out around 15 psi.


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Old 10-10-2014, 10:24 AM   #8
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Well those are great numbers for 5 psi, 8 psi I can see 450 rwhp..


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Old 10-10-2014, 11:07 AM   #9
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Blower size and efficiency have a lot to do with it. You can run over 15psi on a m90 and barely reach 420rwhp. That's why there are bigger blowers. Whipple makes a 4.5 blower. 5psi on it will yield more than on a 2.3. Not all blowers make the same power at a given psi.


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Old 10-10-2014, 11:10 AM   #10
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So it's safe to say somewhere around 8 psi is ok for stock internals??


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Old 10-10-2014, 11:32 AM   #11
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Yeah 8psi should be fine on stock


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Old 10-10-2014, 11:45 AM   #12
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What blower turbo are you using?


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Old 10-10-2014, 11:46 AM   #13
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Benny hill what blower are you currently running?


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Old 10-10-2014, 11:49 AM   #14
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M90 but looking to upgrade to a kennel bell


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Old 10-10-2014, 12:16 PM   #15
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M90 no wonder you can't believe 5lbs. I almost bought one of those based on sound. However lucky for me roush wasn't selling those anymore. Supposedly they're discontinuing them so I had to go with the tvs. You planning on going forged as well? Can't go wrong with a kenne bell. How many pounds of boost you making? Got any numbers and 1/4 mile times? M90 can't be beat sound wise. I can't even hear mine


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Old 10-10-2014, 12:30 PM   #16
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Yeah I love the sound it makes. I'm already forged , bored stroked, 301ci making 394hp and 395 ft lbs on 6psi. I need more boost! Would like to put 20 psi to through her!


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Old 10-10-2014, 12:32 PM   #17
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Its all in the tuning.
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Old 10-10-2014, 12:34 PM   #18
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Eff yeah 20lbs from a kenne bell and be hanging out over 600rwhp. That's what I'm talking about!! Did you build your stock block or buy a forged block?


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Old 10-10-2014, 12:38 PM   #19
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Built it.


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Old 10-10-2014, 01:10 PM   #20
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Which rotating assembly did you use?


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Old 10-10-2014, 01:13 PM   #21
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This might sound strange, but I always figured 10 pounds of boost was 10 pounds of boost. After-all, boost is just a measurement of vacuum, right?

I thought larger superchargers had more potential to make MORE boost, not necessarily make "better" boost. This is all news to me. Glad I know to avoid looking like a fool in the future lol.

EDIT: I remember watching a video posted on youtube by either late model or Jegs talking about the differences between a supercharger and a turbo. Of course the "which one is faster" question was covered and the dude said "9 pounds of supercharger boost is the same as 9 pounds of turbo boost, they just have different means of getting there and maintaining the boost levels". Is this false information??
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Old 10-10-2014, 02:39 PM   #22
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I used eagle.


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Old 10-22-2014, 07:37 PM   #23
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I'm running a novi 2200 @ 10 lbs of boost
Car made 485 rwhp /423 ft lbs on a mustang dyno. Been boosted for over 3 years with 96,000 miles on the clock. I understood the weak point for the 3v would be the rods. im under the belief its not necissarily the hp that destroys the rods but the torque correct me if I'm wrong but I believe you want to stay below 450ft lbs torque.
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Old 10-23-2014, 11:24 AM   #24
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Nice!


Tvs 2300/ 452rwhp 416rwtq
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Old 10-23-2014, 06:06 PM   #25
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Quote:
Originally Posted by silvr002001 View Post
Nice!


Tvs 2300/ 452rwhp 416rwtq
Good numbers bet she is fun to drive
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Old 10-23-2014, 07:40 PM   #26
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Thanks. Yeah I have been having some fun with her. Glad to see your post and numbers too. Nice to see a 3v holding together with your power level. I'm thinking of swapping to a smaller pulley so it's reassuring to know you have been running a while north of 450rwhp.


Tvs 2300/ 452rwhp 416rwtq
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