430hp @ 7600rpm, its alive!!!
#1
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Rumor has it that Gamroth (Rothsport) has created a living, breathing, slide valve throttle body monster.
Should we press Weiner to post the video?
Steve...please do.
Should we press Weiner to post the video?
Steve...please do.
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I really want an air-cooled, N/A, 400hp 3.6 or 3.8 with good street manners. Other than 9M is anyone building stuff like this?
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Ditto the Gamroth.
The door for consulting, sage advice and smooth transactions with Rothsport would be through Steve Weiner of Rennsport Systems.
400hp may be pushing it for a tractable street engine (and real life longevity); we will be building a slidevalve 3.8 at around 370hp next year for Claudia and expect at least a 100 track-hour engine.
I saw the engine mentioned above as the intakes were being installed. It is indeed a thing of beauty and joy.
The door for consulting, sage advice and smooth transactions with Rothsport would be through Steve Weiner of Rennsport Systems.
400hp may be pushing it for a tractable street engine (and real life longevity); we will be building a slidevalve 3.8 at around 370hp next year for Claudia and expect at least a 100 track-hour engine.
I saw the engine mentioned above as the intakes were being installed. It is indeed a thing of beauty and joy.
#6
RL Technical Advisor
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A real honest-to-God 400BHP 3.6 or 3.8 is a race engine making best power from 5K to 8K and requiring close-ratio gears to perform properly. These will idle well, but soft and a little jerky until over 4K. Not a well-mannered street engine. Such things also need race gas which isn't inexpensive, either.
Now, 350-370BHP IS attainable using the proper (expensive) components that can be streetable with the right choice of camshafts.
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#10
RL Technical Advisor
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In any case, I would love to hear more about this engine!
#12
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Right, of course! I have to admit I find camshaft selection to be quite challenging for a street car, as it's difficult for some with limited experience (me!) to understand what the drivability compromise would mean, and you can't really quantify that...
In any case, I would love to hear more about this engine!
In any case, I would love to hear more about this engine!
You would never believe the things I've seen people do in this regard,......
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This 3.9 engine has slide-valve injection, KMS Engine Management, custom cams, custom heads with a LOT of changes, 1 7/8" headers and our own race muffler system. We tried megaphones but they only made a 2 BHP difference,...
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It did make 325 lbs-ft of torque at 6200 which I thought was pretty good.