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From what I've read about that blown HEMI,it's 13% underdriven with tiny holley 750's and 5 lbs of boost.Sounds more like a conservitive tune up.That combo could make upwards of 1400 hp with a pair of SV1 carbs and some overdrive.

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1400 Horse ?? not in a million years. I love how people throw out these huge huge horsepower estimates for roots blower motors. it might make 1400 horsepower with a 1471 blower and alcohol. I have worked around big roots blower motors used in offshore powerboats for a long time. It takes those guys big inch, big cheif head, 1471 intercooled, dominators, race gas, and still not make 1400. I better get on the phone now and start telling those guys not to spend 50 K a motor to make 1100 horse, when all along it only takes a 426 hemi with an 871 and sv1's.

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making 1400 for 1 hr is not like making 1400 for 8sec. at a time. you would just call it fake if some1 did make that much i think.do you realy think that 1400hp cant be made with a combo like his? i am not trying to cause trouble just debate a little.

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If a 500 inch blown alky can make 3000 HP,,,,,,can a 5OO+++ inch gas motor make HALF OF THAT????

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Try something new and ya get bashed around here.... just think if no one every tried anythng new we'd all still be running the .509 cam and iron heads with carter carbs

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From what I've read about that blown HEMI,it's 13% underdriven with tiny holley 750's and 5 lbs of boost.Sounds more like a conservitive tune up.That combo could make upwards of 1400 hp with a pair of SV1 carbs and some overdrive.

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1400 Horse ?? not in a million years. I love how people throw out these huge huge horsepower estimates for roots blower motors. it might make 1400 horsepower with a 1471 blower and alcohol. I have worked around big roots blower motors used in offshore powerboats for a long time. It takes those guys big inch, big cheif head, 1471 intercooled, dominators, race gas, and still not make 1400. I better get on the phone now and start telling those guys not to spend 50 K a motor to make 1100 horse, when all along it only takes a 426 hemi with an 871 and sv1's.

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making 1400 for 1 hr is not like making 1400 for 8sec. at a time. you would just call it fake if some1 did make that much i think.do you realy think that 1400hp cant be made with a combo like his? i am not trying to cause trouble just debate a little.

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Guess it depends on what the debate is. Could a 426 style hemi with an 871 thereotically be made to make that level of power for a short amount of time, maybe. Could that specific motor with its current blower, heads, cam, pistons, slap on a pulley and SV1's and make 1400 h.p. id say pretty much never. Just my opinion.

I have had this debate on here a few years ago when someone put an ad on ebay. It was an Old time 392 hemi with a 6-71. They claimed 1000 horsepower. I sent up the BS flag, and i was told i was crazy, it probably makes that power. I think sometimes people throw around numbers, but in reality don't know how much it really takes to make that power, especially at a level that is sustainable. Every blower motor car i see at the weed shows is 8 seconds and 1000 horsepower, but in reality most cant get out of their own way or probably never seen a day at the track. Not bashing blower guys, some guys get them to run. But my opinion is way too many strokes give them a bad rap for the guys that can get it done Just my bored at work thought of the day.

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Matt,maybe someday my streetcar and your racecar can make a side by side pass .I think my 540 + CI with a stage 3 BDS 1071 with a PAIR of SV1's might be able to stay with you if I can get it to stick .Hopefully with some water/meth inj

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Sounds fun. I'd love to say im ready, but right now the new ride is only fast as can be pushed so i wont be much of a fight.

And my black car was a street car... sort of...

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Matt,maybe someday my streetcar and your racecar can make a side by side pass .I think my 540 + CI with a stage 3 BDS 1071 with a PAIR of SV1's might be able to stay with you if I can get it to stick .Hopefully with some water/meth inj

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Sounds fun. I'd love to say im ready, but right now the new ride is only fast as can be pushed so i wont be much of a fight.

And my black car was a street car... sort of...

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I am also in the middle of a freshing being done by ARC .Unfortunatly I have to increase the cubic inches,it decided to grow alittle BDS says I need 11 to 12 lbs of boost for high 8's

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well in my case the bigger carbs helped a lot.

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If bigger carbs helped you alot, all that says is you were under carbd the first time.

My point wasn't so much about carbs, it was about point of dimishing returns on roots blowers. Every pulley change you make to add boost will add more power (to an extent), but less of an increase with each change. For example add 5 Percent overdrive you might pick up 50 horse. Add another 5 percent over you may only pick up another 20 and so on. Dimishing returns. The motor i was making the comment on (hemiitis) does not have a blower that will support 1400 h.p. Just not going to happen with a pulley change and carbs. This is not a bash on him or his combo just a discussion on blowers, and what they can and cant do.

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When do you plan on putting this on and giving us some "real world" feedback? I'm looking into one myself ...

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This will be installed on my friends big inch NON-MOPAR this weekend.It might be a few weeks before track testing.

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any results

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Well,it took some time,and it took some money$$$$$$$but I finally got my hands on a pair .Now I'm waiting on parts to freshen up the blower and then git on the dyno to find my 2 tune ups.Then I can order a new converter

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that is awsome Al with a blower i am sure thay will work well. looking forward to the dyno results.

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A friend of mine bought one for his big block chevy, he went slower with it.
I am interested in buying it from him.
It has a 115mm throttle blade, how do I know if this is too big or not for my combo?

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A friend of mine bought one for his big block chevy, he went slower with it.
I am interested in buying it from him.
It has a 115mm throttle blade, how do I know if this is too big or not for my combo?

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A 115 blade is HUGE!!You might want to call Pro Systems on that one.
http://www.prosystemsracing.com/svseries.html

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