Re: B1 pso heads
[Re: avenger572]
#1325072
10/23/12 09:00 PM
10/23/12 09:00 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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How big of improvement over 572-13 heads are pso's?
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: B1 pso heads
[Re: avenger572]
#1325074
10/24/12 04:13 PM
10/24/12 04:13 PM
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Joined: Jan 2003
Posts: 10,012 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,012
Frostbitefalls MN (Rocky&Bullw...
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The PSO heads should be worth considerable hp, based on a lot more flow plus the port cross section area to feed the motor. If they flow 60 to 70 cfm more than the 572 heads, then my guess is they would gain a minimum of 120 to 150 hp over the 572s if you put the right parts in the motor to support the heads. I was told by a pretty sharp guy (ported my heads) that a good head should be able to make close to 2.45 hp per cfm of flow. So if those PSOs flow 470, they should be able to produce 1150 hp if the motor is built right. BestMachine Can you post some info on thier potential?
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: B1 pso heads
[Re: PETE@BESTMACHINE]
#1325075
10/24/12 04:54 PM
10/24/12 04:54 PM
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Joined: Jan 2003
Posts: 1,855 Staten Island N.Y.
Dap
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,855
Staten Island N.Y.
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I think the OP is looking for a physical height difference between the two due to limited space.
PRH446 10.084 @ 135.21 mph N/A through chambered mufflers,3300lbs. Stock stroke wedge
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Re: B1 pso heads
[Re: avenger572]
#1325078
10/24/12 06:56 PM
10/24/12 06:56 PM
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Joined: Jan 2003
Posts: 2,931 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,931
A shed in England
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Curious about this too, also interested to see if the exhaust manifold bolt pattern is the same or near.
'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: B1 pso heads
[Re: fishy340]
#1325081
10/24/12 09:32 PM
10/24/12 09:32 PM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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i want a PSO engine so bad it hurts
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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