Street 360/408 dyno results (520 CHP - 540 CTQ)
#39703
05/17/07 10:53 PM
05/17/07 10:53 PM
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Joined: Feb 2003
Posts: 752 North Dakota
Jesse_Lackman
OP
super gas
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OP
super gas
Joined: Feb 2003
Posts: 752
North Dakota
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408 based on Magnum block
-RHS 360HPST iron heads, 2.02/1.60
-Hughes 236/242 @ .050 Hyd roller .557/.521 lift
-stock Magnum hydraulic lifters
-Dove/Racer brown rockers 1.6 intake 1.5 exhaust
-Performer RPM Air Gap
-Holley 870 Street Avenger
-1 5/8 x 2 3/4 dyno headers
-91 octane pump gas
-12.5 manifold vacuum @ 950 RPM
-398 CTQ @ 2000 RPM
-542 CTQ peak @ 4300 RPM
-520 CHP peak @ 5900 RPM
-500 CTQ from 3200 to 5200 RPM
No time to try any tricks, would have made more upper RPM HP with an open spacer but customer did not have the room to use one.
Last edited by Jesse_Lackman; 05/21/07 04:38 PM.
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: Jesse_Lackman]
#39704
05/17/07 11:12 PM
05/17/07 11:12 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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I Live Here
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Posts: 12,419
Kalispell Mt.
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Thats great for iron heads. What was done to those heads?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: HotRodDave]
#39705
05/18/07 12:39 AM
05/18/07 12:39 AM
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Anonymous
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Anonymous
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Yea i would like to know what was done with the heads! Thats basically my combo in a nutshell, and i am running unported irons....i expect way less from my build!
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: Jesse_Lackman]
#39708
05/18/07 09:32 AM
05/18/07 09:32 AM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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What was the compression ratio?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: Pat7272]
#39713
05/18/07 04:13 PM
05/18/07 04:13 PM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
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I Live Here
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Posts: 16,123
Grand Haven, MI
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nice. are the RHS heads still available? how do they compare with the enginequest ones (which I see all over the place compared to the RHS's).
how much do you think a hydro roller cam with ~8 degrees less duration would do for power, torque, & idle? I'd like to build something similar, but I'd like ~ 16" vacuum at a 900-950 idle.
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: Jesse_Lackman]
#39719
05/19/07 04:40 PM
05/19/07 04:40 PM
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Anonymous
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Anonymous
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I have a pair of these RHS (cast iron) Magnum heads new on the shelf. In case anyboby is interested.
Andy 305-608-2565 Cel.
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Re: Street 360/408 dyno results (RHS 360-HPST heads)
[Re: Pat7272]
#39721
05/21/07 12:14 AM
05/21/07 12:14 AM
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Joined: Feb 2003
Posts: 752 North Dakota
Jesse_Lackman
OP
super gas
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OP
super gas
Joined: Feb 2003
Posts: 752
North Dakota
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Quote:
Are those heads factory pieces that have been reworked or brand new castings?
Brand new castings They have been out for a while though.
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