Author Topic: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno  (Read 4040 times)

Offline 1970rtdownunder

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493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« on: April 22, 2010 - 08:21:51 PM »
 :aussie: Hi guys im new here so hope we can have some fun, iv been restoring my 1970 rt challenger for 2 years and probably 1 year to go.I have recently completed my engine which i did myself (mechanic) and thought we could guess its hp tq output
493rb will be running 98 octane pump gas(yes pump gas)
comp cams hyd roller 242/248 @ 50 .585 lift
diamond pistons .005 under deck  11.1 comp, total seal rings
scat rods
1.6 harland sharp rollers.indy ez cnc by modern heads 350cfm max wedge
indy duel plane max wedged and hand blended 350 cfm+
hooker headers 2" into 3.5
msd
850hp holley
 :feedback: :bananasmi
« Last Edit: April 22, 2010 - 08:24:29 PM by 1970rtdownunder »




Offline Moparal

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #1 on: April 22, 2010 - 08:38:40 PM »
Almost identical to the 493 im building. going with a bit bigger carb tho.  and 10.1 comp
hoping for 600 hp

Offline Moparal

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #2 on: April 22, 2010 - 08:39:51 PM »
oh, by the way...Welcome to Cuda-Challenger.com

Offline Cooter

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #3 on: April 22, 2010 - 09:50:53 PM »
This just a guess as I don't have the Desk top dyno software, but I'd say somewhere in the 580 HP and 640 Ft LB of torque....
1958 plymouth Belvedere 2dr hd top "Christine" [OO)====V====(OO]
1969 dodge Charger "General Lee"         [___|______I______|___]                        
1968 Dodge Dart 2dr sedan 505" Stroker    (O]=0==========0=[O)                
1970 Challenger R/T Clone "Kowalski Special"   (OO) [___________] (OO)

Offline 1970rtdownunder

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #4 on: April 23, 2010 - 02:25:48 AM »
oh, by the way...Welcome to Cuda-Challenger.com
Cheers, good to be here, im hopeing for anything with a 6 in front of it, though if i dont get there im sure it will be close and there just numbers bcos im certain it will be HEAPS of fun to drive!!

Offline Aussie Challenger

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #5 on: April 23, 2010 - 06:24:07 AM »
Welcome, you will have to post in the   :newbie:  section, what part of Oz are you from, and we are addicted to MOPAR pic's...
   :useless:
Dave

Offline moparmaniac59

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #6 on: April 23, 2010 - 06:36:21 AM »
Welcome to CC.com. That sounds like a stout setup. I'll make a guess at it....Hmmm, I'd say 550 HP and 580 ft/lbs of torque. Good luck with it and keep us posted. How 'bout posting some pics of the car!! We love pics!! :picture:


                                                  Matt B.
Matt

Offline 1970rtdownunder

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #7 on: April 23, 2010 - 09:00:33 AM »
642hp!! i would do back flips
To answer the other question, im in melbourne.You?
Im guessing 600hp give or take 15hp and 600 tq plus

Offline Aussie Challenger

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #8 on: April 23, 2010 - 09:18:15 AM »
Outer East, in the Yarra Valley.   :2thumbs:   :cheers:
Dave

Offline 1970rtdownunder

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #9 on: April 24, 2010 - 12:04:35 PM »
Hey SLEDGEHAMMER  i checked out your video and you car seems to be a real beast! what are the specs? how much hp has it got?

Offline 1970rtdownunder

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #10 on: May 01, 2010 - 07:01:03 PM »
Ok did not finish on the dyno bcos when we finally got to the carb it liked we had valve spring issues and removed the covers to find 2 retainers were cracked.Doh!! :violin:
850hp was tragic
950 pro form heaps better
950 pro systems kicked ass, as i said we only got started and had not even got into jetting and timing
599hp 5300rpm.The hp was stable on the 3 pulls with the pro systems
650 660 lb/ft best tq pull was 667 lb/ft.
As you can see the combo works and when we sort the spring issue it should get over the 600hp mark when the rich mixtures are corrected due to valve float.
Pics to follow

Offline Talkwrench

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #11 on: May 02, 2010 - 03:54:54 AM »
SLEDGEHAMMER your neighbours must love you!   :roflsmiley:   :burnout:
"Came too close to dying to stop living now!"

Offline 1970rtdownunder

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #12 on: May 03, 2010 - 08:24:13 AM »
Cant get pics on,dont know how to reduce them!  :dupe:

Offline nqkjw

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Re: 493RB cnc indy ez (modern cyl heads) hyd roller going on dyno
« Reply #13 on: May 04, 2010 - 10:37:43 AM »
.... nice pump fuel!!! :2thumbs:

our pump 98 is equivalent to abt 94/95 on your scale.
Burnouts are cool but Traction is the Action