View Poll Results: Max HP on a 427 all motor
500-600hp
27
17.53%
601-700hp
48
31.17%
701-800hp
26
16.88%
800+hp
53
34.42%
Voters: 154. You may not vote on this poll
427cid all motor can produce?
01-16-2007, 10:11 PM
#1
427cid all motor can produce? I have been looking around for some horsepower numbers on a 427cid all motor engine. Some people say you can only get about 500-600 horsepower from it. What do you think you might be able to get from a 427cid all motor engine?
01-17-2007, 01:12 AM
#6
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that is something noone can acurately answer. too many variables. I would immagine if you went with an agressive heads and cam package with longtube headers and a 90 / 90 intake and a dead nuts custom tune you could most likely see more then 600 hp. its like richard said how much you wanna spend ?? ~Guy
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01-17-2007, 04:33 AM
#8
budget = HP Period, there's no other needed formula to answer this question.
Futral has built some solid roller race 427's that have made in excess of 800 flywheel HP, fwiw.
With say a 12K budget, you probably could hit 600 to 625 flywheel hp.
FWIW, my nitrous 402,made about 585 flywheel hp. I use flywheel #'s, only because the driveline variances will have a large effect to the rwhp #'s (stick car dyno's well, th400 car with a 6000 converter like what I'm running.... doesn't dyno too well LOL)
Futral has built some solid roller race 427's that have made in excess of 800 flywheel HP, fwiw.
With say a 12K budget, you probably could hit 600 to 625 flywheel hp.
FWIW, my nitrous 402,made about 585 flywheel hp. I use flywheel #'s, only because the driveline variances will have a large effect to the rwhp #'s (stick car dyno's well, th400 car with a 6000 converter like what I'm running.... doesn't dyno too well LOL)
01-17-2007, 08:21 AM
#10
Dang it people; stop trying to answer him until he makes his question answerable!
Rear wheel HP or Flywheel HP?
What octane gas?
What kind of cam and powerband; race-only or streetable?
What budget or parts?
Etc, etc.
Right now, as phrased, the answer is: It depends... you need to be more specific!
Rear wheel HP or Flywheel HP?
What octane gas?
What kind of cam and powerband; race-only or streetable?
What budget or parts?
Etc, etc.
Right now, as phrased, the answer is: It depends... you need to be more specific!
01-17-2007, 08:34 AM
#11
To answer the question as phrased, of course you can make 800+ HP out of 427" N/A setup. The real question is do you have the cash to make it happen? 
A lot more then 800 HP can be made, depending on the fuel you use. A little nitro goes a long way. I'm sure you meant some type of gas, but, you didn't specify, so...
A lot more then 800 HP can be made, depending on the fuel you use. A little nitro goes a long way. I'm sure you meant some type of gas, but, you didn't specify, so...
01-17-2007, 10:04 AM
#12
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Here is a link to some information I posted about my setup. We think 900+ is possible with 427 C.I. we are still fine tuning a few things.
https://ls1tech.com/forums/drag-racing-tech/615674-project-hell-almost-complete-pics-inside-56k-see-ya-later.html
Here is also a link to the motor dyno. To me its an interesting video, but to many its long, boring, and could have been condensed. Needless to say here is you a 800+ hp N/A 427.
http://videos.streetfire.net/video/6...0d00ab1023.htm
https://ls1tech.com/forums/drag-racing-tech/615674-project-hell-almost-complete-pics-inside-56k-see-ya-later.html
Here is also a link to the motor dyno. To me its an interesting video, but to many its long, boring, and could have been condensed. Needless to say here is you a 800+ hp N/A 427.
http://videos.streetfire.net/video/6...0d00ab1023.htm
01-17-2007, 05:36 PM
#13
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Originally Posted by black_knight
Dang it people; stop trying to answer him until he makes his question answerable!
Rear wheel HP or Flywheel HP?
What octane gas?
What kind of cam and powerband; race-only or streetable?
What budget or parts?
Etc, etc.
Right now, as phrased, the answer is: It depends... you need to be more
specific!
Rear wheel HP or Flywheel HP?
What octane gas?
What kind of cam and powerband; race-only or streetable?
What budget or parts?
Etc, etc.
Right now, as phrased, the answer is: It depends... you need to be more
specific!
Way too many variables.
01-18-2007, 03:42 PM
#20
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Alan at Futral Motorsports is building me a 440ci with LS7 style ALL PRO W heads built by FMS/Meaux Racing.
I am looking for some awesome rwhp out of this street/strip build.
Depending out the final set-up (Compression, Fuel, Cam, Intake, ect) and how streetable we go, I guessing north of 650rwhp NA is realistic.
I figure an aggressive Hyd Roller NA on Pump Gas should be good for a rwhp of about 1.4 x ci. or 1.4 x 427 = 597.8
For a Solid Roller NA on Pump Gas, rwhp of about 1.5 x ci. or 1.5 x 427 = 640.5
I agree it really depends on the total set-up, but the quality of the heads is very important.
I am looking for some awesome rwhp out of this street/strip build.
Depending out the final set-up (Compression, Fuel, Cam, Intake, ect) and how streetable we go, I guessing north of 650rwhp NA is realistic.
I figure an aggressive Hyd Roller NA on Pump Gas should be good for a rwhp of about 1.4 x ci. or 1.4 x 427 = 597.8
For a Solid Roller NA on Pump Gas, rwhp of about 1.5 x ci. or 1.5 x 427 = 640.5
I agree it really depends on the total set-up, but the quality of the heads is very important.