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Re: ENGINE FINALLY DONE AND DYNO'D
[Re: 512 VALIANT]
#452820
08/29/09 06:51 PM
08/29/09 06:51 PM
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Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
moparguy7074
top fuel
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top fuel
Joined: Mar 2007
Posts: 1,608
Rudolph, Ohio
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Quote:
Quote:
Quote:
400 block 4.40 bore 4.15 stroke 13:5 comp ported Victor heads and intake .690 solid roller 1.6 rockers 1050 dom.
702.4 hp @ 6300
662.6 tq @ 4800
pics to come later
HP seems kind of low, what rpm was it run up to?
6300 rpm @ 37 degrees timing #88 jets and it was 97 degrees ambient we were going to do a forth pull w/89's in it, but were not sure if we could duplicate correct air flow to justify it. Fuel per horsepower usage was dead on @ .397-.440 per # (you dyno guys will what I mean). ---- As far as low #'s!!!!!!! THIS IS NOT AN EXOTIC RACE ENGINE AT ALL. It is off the shelf parts - shaft rockers edlebrock heads etc. most (several engine builders) I spoke w/ assumed 650-675 including the shop the did the build. EVERYONE was very happy w/ the hp and the tq - they have done several builds similar and this was the highest producer yet by almost 35hp and 40tq. Shop owner said the heads came out REALLY NICE and that was the difference (335 @ .700). If I had B-1's or Indys I could see your point, but you could call Jegs or Herbert and probably have everthing in this engine shipped to your house w/ in a week.
Sorry, I wasnt trying to dis your build or make waves, it just seems that the hp peaks out at a relatively low rpm. Im sure that the engine runs great, and will really move your car.
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Re: ENGINE FINALLY DONE AND DYNO'D
[Re: Streetwize]
#452822
08/29/09 07:50 PM
08/29/09 07:50 PM
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Joined: Sep 2008
Posts: 2,840
Flint, Michigan
B1Fish540
master
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master
Joined: Sep 2008
Posts: 2,840
Flint, Michigan
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Quote:
Great power I can imagine the torque curve is very flat and useable from all RPM. is it a race only car? The reason I ask is if you've got so much torque you probably could put in a tighter more streetable converter and take better advantage of all that high port velocity grunt right off the line at 3200 instead of the vert side stepping most of it all until 4500. What gear is in the car?
Awesome power....hitting 700HP with a stock-ish 906 size port window is very impressive.
I thought the numbers were a little low at first too. The Victor headed motors I have seen on here and in magazines usually are in the 750+ range..but they were max wedge ported and had bigger cams, so that would explain the difference. I agree thats very good steam for that combo. 
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Re: ENGINE FINALLY DONE AND DYNO'D
[Re: Streetwize]
#452824
08/29/09 08:05 PM
08/29/09 08:05 PM
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Joined: Dec 2008
Posts: 136
CHANDLER, AZ
512 VALIANT
OP
member
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OP
member
Joined: Dec 2008
Posts: 136
CHANDLER, AZ
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Quote:
Great power I can imagine the torque curve is very flat and useable from all RPM. is it a race only car? The reason I ask is if you've got so much torque you probably could put in a tighter more streetable converter and take better advantage of all that high port velocity grunt right off the line at 3200 instead of the vert side stepping most of it all until 4500. What gear is in the car?
Awesome power....hitting 700HP with a stock-ish 906 size port window is very impressive.
Its a strip car only. It has a narrowed dana 60 w/ 4.88's in it. I thought it might blow through the converter a little since peak tq was @ 4800. or that it might just stall a little higher. Should I be expecting something else??
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