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Street 496 Dyno numbers are in... #3062667
07/26/22 11:17 AM
07/26/22 11:17 AM
Joined: Dec 2005
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Bowling Green KY / Nashville, ...
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Over TEN YEARS ago I built a 440 with a 4.15 crank (496 CID), Ross 11:1 piston on Eagle H-beams with Chevy pins, Edelbrock 7193 intake, Hughes "prepped" Edelbrock heads, Hughes SEH4652BL hydraulic cam (see card, using 1.6 rockers).

Life happened and it sat there waiting..... a few weeks ago we FINALLY fired it up and put it on the dyno. I was hoping for 575 HP and 600 TQ, but I was doing the Snoopy Dance when the numbers came up!

[Linked Image]

[Linked Image]

[Linked Image]

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062691
07/26/22 11:50 AM
07/26/22 11:50 AM
Joined: Jan 2003
Posts: 12,767
Marion, South Carolina [><]
an8sec70cuda Online content
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Nice! That ought to be a real nice stump pulling street motor.
The pics don't work for me, but I assume it made more than you hoped for!


CHIP
'70 hemicuda...8 sec street car
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed
'71 Demon 340
'73 Chrysler New Yorker
'90 Chevy 454SS Silverado
'06 GMC 2500HD LBZ Duramax...toy hauler
Re: Street 496 Dyno numbers are in... [Re: an8sec70cuda] #3062695
07/26/22 11:54 AM
07/26/22 11:54 AM
Joined: Dec 2005
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Bowling Green KY / Nashville, ...
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It made 639 HP and 675 TQ, I was really surprised!

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062698
07/26/22 11:58 AM
07/26/22 11:58 AM
Joined: Jan 2003
Posts: 18,272
So Near, Yet So Far
topside Offline
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up

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062713
07/26/22 12:18 PM
07/26/22 12:18 PM
Joined: Jan 2003
Posts: 17,284
S.E. Michigan
ZIPPY Offline
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That's a great build there, the numbers seem impressive and way up there, and I have to admit I like that it's a hydraulic flat tappet.

what is it going into?


Rich H.





Re: Street 496 Dyno numbers are in... [Re: ZIPPY] #3062717
07/26/22 12:21 PM
07/26/22 12:21 PM
Joined: Nov 2007
Posts: 21,521
Kirkland, Washington
Pacnorthcuda Offline
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Kirkland, Washington
Impressive is an understatement!

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062731
07/26/22 12:58 PM
07/26/22 12:58 PM
Joined: Jan 2003
Posts: 12,767
Marion, South Carolina [><]
an8sec70cuda Online content
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Originally Posted by 300by500
It made 639 HP and 675 TQ, I was really surprised!

eek Wow, yeah that's way more than I would have thought from that combo! Nice!


CHIP
'70 hemicuda...8 sec street car
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed
'71 Demon 340
'73 Chrysler New Yorker
'90 Chevy 454SS Silverado
'06 GMC 2500HD LBZ Duramax...toy hauler
Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062756
07/26/22 02:08 PM
07/26/22 02:08 PM
Joined: Jan 2003
Posts: 30,063
Oregon
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AndyF Offline
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Oregon
That is a ton of torque for that size of engine. Should be a lot of fun on the street. You won't need steep gears out back, probably run as hard as you want with 3.54 or 3.70 gears.

Re: Street 496 Dyno numbers are in... [Re: AndyF] #3062763
07/26/22 02:24 PM
07/26/22 02:24 PM
Joined: Nov 2003
Posts: 928
White House,TN
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stroked470 Offline
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White House,TN
I see Frank in the back ground doing some tuning. That is impressive for sure.

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062768
07/26/22 02:58 PM
07/26/22 02:58 PM
Joined: Jan 2005
Posts: 1,610
Keymar, MD
DusterKid Offline
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Keymar, MD
very impressive #'s for the build.

Re: Street 496 Dyno numbers are in... [Re: ZIPPY] #3062783
07/26/22 04:15 PM
07/26/22 04:15 PM
Joined: Dec 2005
Posts: 2,876
Bowling Green KY / Nashville, ...
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Originally Posted by ZIPPY
That's a great build there, the numbers seem impressive and way up there, and I have to admit I like that it's a hydraulic flat tappet.

what is it going into?


69 Barracuda fastback, mini-tubbed, 727, 8-3/4 with a 3.91 gear.

Re: Street 496 Dyno numbers are in... [Re: stroked470] #3062786
07/26/22 04:17 PM
07/26/22 04:17 PM
Joined: Dec 2005
Posts: 2,876
Bowling Green KY / Nashville, ...
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Originally Posted by stroked470
I see Frank in the back ground doing some tuning. That is impressive for sure.


Thanks! We really didn’t tune it too much, just bumped the timing from 36° total up to 37° We were running the shop’s 830 CFM carburetor. I’ve got a Sniper system for it, so hopefully there’s even a little more in it?

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062787
07/26/22 04:29 PM
07/26/22 04:29 PM
Joined: Aug 2003
Posts: 40,025
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
I've seen similar results with similar parts more than once up
Dan,AKA Dram, (may he R.I.P.) didn't believe those results years ago shruggy
My first pump gas stroker 400 with 4.250 stroke and 4.375 bore with 9.25 to 1 compression ratio with a set of ported big valve iron 906 heads with a low deck six pack Eddy intake set up with OEM 440 six pack carbs modified by C&J engr..made 612 HP at 5500 RPM and 644 Ft. lbs. at 4500 RPM using CA 91 octane pump swill boogie
Your heads are probably better than my old ones were up
Be VERY careful with your new found power, it can bite you luck


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062835
07/26/22 07:30 PM
07/26/22 07:30 PM
Joined: Jan 2003
Posts: 27,961
Irving, TX
feets Offline
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Irving, TX
I'd be dancing, too, with numbers like that!

Very nice results.

I wish I could have gone for crazy numbers on mine but it wouldn't work with the car.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062852
07/26/22 08:54 PM
07/26/22 08:54 PM
Joined: Mar 2005
Posts: 2,909
NY
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B1duster Offline
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NY
Nice build, great numbers !
Which edelbrock heads ?
Are they fully ported/ cnc ?
Pump gas ?
Thanks

Re: Street 496 Dyno numbers are in... [Re: B1duster] #3062883
07/26/22 11:38 PM
07/26/22 11:38 PM
Joined: Dec 2005
Posts: 2,876
Bowling Green KY / Nashville, ...
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Originally Posted by B1duster
Nice build, great numbers !
Which edelbrock heads ?
Are they fully ported/ cnc ?
Pump gas ?
Thanks


Just Hughes “prepped” Edelbrocks from 2010, on 93 octane gas.

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062928
07/27/22 08:58 AM
07/27/22 08:58 AM
Joined: Jan 2007
Posts: 7,623
Mt Morris Michigan
mopar dave Online content
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Those are great numbers, congrats. That is what my12.5:1 511 makes according to my time slip and the Moroso slide rule and it's a bunch of fun to drive.

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062942
07/27/22 09:38 AM
07/27/22 09:38 AM
Joined: Jan 2003
Posts: 12,767
Marion, South Carolina [><]
an8sec70cuda Online content
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Marion, South Carolina [><]
Better start saving for a better rearend. Sell the 8.75 before it grenades. twocents


CHIP
'70 hemicuda...8 sec street car
'69 road runner 440 w/ Indy SRs
'69 road runner 440-6, 4 speed
'71 Demon 340
'73 Chrysler New Yorker
'90 Chevy 454SS Silverado
'06 GMC 2500HD LBZ Duramax...toy hauler
Re: Street 496 Dyno numbers are in... [Re: 300by500] #3062968
07/27/22 10:40 AM
07/27/22 10:40 AM
Joined: Nov 2009
Posts: 146
WI
mopar873 Offline
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WI
That torque curve is awesome. Car will be a beast...

Re: Street 496 Dyno numbers are in... [Re: 300by500] #3063531
07/29/22 10:43 AM
07/29/22 10:43 AM
Joined: Jan 2003
Posts: 3,449
Shelby Twp. Mi
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Shelby Twp. Mi
Nice work!

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