What will it dyno! (engine dyno)
#974150
04/16/11 05:37 AM
04/16/11 05:37 AM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
OP
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OP
master
Joined: Feb 2007
Posts: 6,295
U.S.
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Prolly about a monthish out from being done with my new bullet but wanted to see what your guesss are! First time ever to go to dyno also so any tips to be prepared would be helpful also Special thanks goes out to Competition Wedge on here for hooking me up with some new bottom end parts! Also like my new Superformance gasket set also thanks to the guys who sent some helpful pm's New Combo(pump gas baby ) 574CI World Aluminum Block 4.500*4.505 7.100 rod Indy 440-1 CNC 345's from Best Machine 2.25*1.81 ferreas backcut k motion k 1000H springs Indy dominator pattern intake milled and ported Good size custom comp 3/4 roller 112 wide and in at 108 from 112 TD rockers 1.65 Milodon GD ATI balancer Melling HV pump windage tray milodon static pickup CVR 55GPM electric waterpump 11.89 to 1 compression Dynamic compression ratio is 8.84:1 Dynamic cranking pressure is 180.84 PSI. (calculated via wallace @ 0 altitude) .051 quench Diamond pistons cut deeper and rolled edges Total seal rings steel top .028 napier 2nd .032 Pro Systems SV1 (1212CFM) TTI/Proparts 2-2 1/8th ceramic coated headers MSD goods tried to be detailed.... prolly forgot something though!
Mopar Performance
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Re: What will it dyno! (engine dyno)
[Re: moparniac]
#974151
04/16/11 06:34 AM
04/16/11 06:34 AM
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Joined: Jan 2003
Posts: 2,981 A shed in England
Tig
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master
Joined: Jan 2003
Posts: 2,981
A shed in England
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Me first!! 875Hp @ 7000 rpm (ish)
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: What will it dyno! (engine dyno)
[Re: StripeHOG]
#974157
04/16/11 09:28 AM
04/16/11 09:28 AM
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Joined: Feb 2005
Posts: 20,272 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,272
PA.
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That's a 3/4 cam plus a 1.65 rocker so really its like a 7/8 cam. The only problem I see is the compression. Aluminum block and aluminum heads love compression. I think you will be really happy with your power level but left a lot on the table. To bad E85 is such a hassle finding in Pa. I look forward to seeing some passes at PRP.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67
Livin and lovin life one day at a time
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Re: What will it dyno! (engine dyno)
[Re: moparniac]
#974159
04/16/11 09:43 AM
04/16/11 09:43 AM
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Joined: Jan 2003
Posts: 16,936 NC
440Jim
I Live Here
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I Live Here
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NC
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Quote:
New Combo(pump gas baby ) 574CI World Aluminum Block Good size custom comp 3/4 roller 112 wide and in at 108 from 112 11.89 to 1 compression
Dynamic compression ratio is 8.84:1 Dynamic cranking pressure is 180.84 PSI. (calculated via wallace @ 0 altitude)
Especially important when putting together a pump gas combo is the compression ratio and cam specs. I like your CR choice. What is the duration of that cam? However, even a cam with "too much" duration for the CR will work OK with that much CID.
It should be close to your target even with that 0.680" lift cam (.75/1.65*1.5). 574 CID does wonders.
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Re: What will it dyno! (engine dyno)
[Re: moparniac]
#974162
04/16/11 09:56 AM
04/16/11 09:56 AM
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Joined: Jan 2003
Posts: 10,081 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
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Posts: 10,081
Frostbitefalls MN (Rocky&Bullw...
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I'll take a stab at 810 hp at 6600 rpm. To drop compression that far, the cam must be pretty wild, say 282 intake dur @ .050?
Last edited by gregsdart; 04/17/11 08:16 AM.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
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Re: What will it dyno! (engine dyno)
[Re: moparniac]
#974164
04/16/11 10:05 AM
04/16/11 10:05 AM
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Joined: Feb 2005
Posts: 20,272 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,272
PA.
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What flow numbers did Pete get out of your 440-1's. Didn't you loan that carb to another member and if so how did it work for them?
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.38@138.67
Livin and lovin life one day at a time
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Re: What will it dyno! (engine dyno)
[Re: moparniac]
#974166
04/16/11 10:08 AM
04/16/11 10:08 AM
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Joined: Jan 2007
Posts: 3,695 nc
emarine01
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master
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nc
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