Re: 440 six pack intake manifold max HP level??
[Re: BSB67]
#694832
05/11/10 11:15 PM
05/11/10 11:15 PM
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Joined: Aug 2003
Posts: 43,307
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,307
Bend,OR USA
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The car weighs 3450 lbs with me in it, it has gone a best of 10:34 ET at 128.6 MPH running lean(14.3 starting to 15.7 at the end of the track  ) from the hit to the finish line. That is on pump gas with the air cleaner and exhaust on, I'm planning on putting that motor(518) back in the car soon and see if I can get it to go faster by tuning and some chassis changes  I broke a roller lifter in that motor two years ago at the first race of the year at Madras and ended up trying two other motors in the car since then  The 518 is fixed ready to run again  
Last edited by Cab_Burge; 05/11/10 11:17 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 440 six pack intake manifold max HP level??
[Re: Cab_Burge]
#694833
05/12/10 08:41 AM
05/12/10 08:41 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
The car weighs 3450 lbs with me in it, it has gone a best of 10:34 ET at 128.6 MPH running lean(14.3 starting to 15.7 at the end of the track ) from the hit to the finish line. That is on pump gas with the air cleaner and exhaust on, I'm planning on putting that motor(518) back in the car soon and see if I can get it to go faster by tuning and some chassis changes I broke a roller lifter in that motor two years ago at the first race of the year at Madras and ended up trying two other motors in the car since then The 518 is fixed ready to run again
718HP @ 3,450LBS runs 128?????? Shouldn't that be over 135MPH??? Even if it's a little lean, 7MPH is off a lot......  Was the dyno "happy" or was the carb only opening half way? 
My 590HP @ 3,550 race weight and leaving at 2,000RPM runs 126.8 @ 3,000DA........
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Re: 440 six pack intake manifold max HP level??
#694834
05/12/10 12:27 PM
05/12/10 12:27 PM
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Joined: Aug 2003
Posts: 43,307
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,307
Bend,OR USA
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The dyno operator from then (diiferent one now) says he calibrated the Studka dyno before every session, the new operator didn't until I showed him the differences between the Studka and the DTS dyno in Klamath Falls last summer. As far as MPH and converters my playback tach shows right at 13% slippage on my 10 inch converter  I did dyno the 518 motor during the winter when it was 20F for the high and 31.83 B.P., I wish I could race in those conditions on a heated track  The results are what they are. I think all of the computer programs seem to be a little optimestic,especially on the MPH which is based on total lockup with no drivetrain losses.  What do you think? I know most of them are based on ASE standard conditions, 60 F at 29.92 BP at Mid Sea level(zero altitude, mid way between high and low tide) and no humidity. Those conditions are hard to find in Oregon during the spring, fall and summer  What are the conditions where you run?
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 440 six pack intake manifold max HP level??
[Re: Cab_Burge]
#694835
05/12/10 03:53 PM
05/12/10 03:53 PM
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Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
Old School
super stock
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super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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Quote:
I'm running a Edelbrock low deck six pak on my 518 C.I. pump gas street motor, the last time it was on a engine dyno the motor made 718 HP at 5600 to 5800 RPM and 744 Ft lbs torque at 4500 RPM. The dual plane design does limit the RPM on the motor so don't plan on making a RPM monster using one, my car does run faster by shifting the motor above 7000 RPM than it does when shifting it lower
744 ftlbs,with a 518 ci  . hell,my 4.5" 580 only made 12 ftlb more,at 874 hp...
68 cuda formula S 588" bb 5sp
70 CUDA CONVERT 500" 5SP (SUBLIME)
70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: 440 six pack intake manifold max HP level??
[Re: Old School]
#694836
05/12/10 11:36 PM
05/12/10 11:36 PM
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Joined: Aug 2003
Posts: 43,307
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,307
Bend,OR USA
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What compression ratio and heads? The same short block(rods, pistons, camshaft) with a 4.25 stroke crank, 9.25 to 1 compression and a set of ported big valve 906 heads(only flowed 266 CFM at .600 lift at 28 inches of water on a Superflow 600 bench) made 612 HP at 5400 RPM and 644 ft lbs at 4300 RPM on a DTS dyno at Vrbancic Bros. racing six years ago on CA pump gas I have dyno tested a lot of BB Mopars that made a lot more torque than HP, the higher the compression( it seems  ) the less torque and more HP, most of my motors are built for the street and designed to run pump gas. The higher compression bracket motors I build for race gas make more HP than torque
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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