These the ideal in a high boost/high nitrous combination. If you currently have 6.1 heads, these will raise the compression by .3. If you currently have eagle heads, these will lower the compression by .4.
Stock chamber with stock guides. Stock seats were cut out and copper berrylium seats were installed for use with Extreme duty Manley valves 2.125" x 1.625".
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Stock valve guides removed, heads have been cnc'd and the valve seats have been valve-jobbed.
Quench pad welded up to decrease CC volume.
Milled back flat and bronze valve guides installed.
Chambers cleaned up and polished. Chamber volume is 70cc
Retainers are custom made Titanium
Manley Hollow-Stem Severe Duty Intake Valves
Manley Extreme Duty Exhaust Valves
Manley Nextek Valvesprings
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CNC Ported, Bronze Valve Guides, Newman Epoc valve job
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Chamber full hand-formed and polished
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Damn those things are nice !!!!
If you have to ask, you can't afford them ? ... lol
- Former owner of a 2007 Charger R/T AWD -
Rest In Peace Mom (1947-2010) ... I will love you forever ... I miss you ...
'13 Mustang GT 6-spd man, Sterling Gray, Recaro seats, Track Pack.
- ordered 6.6.12, born 7.25.12, mine 8.11.12 -
'10 Focus SE sedan, auto, Sangria Red
how much difference in price from my prostreet heads that are still new? hold up to the same lift?
-Retired 723rwhp 645rwtq stock bottom
-PWR Prostreet 419 990rwhp 91oct 14lbs on "6262's RIP"
-S300sx3 66mm Turbos
-SHR Tranny,Protorque 4400,BB Flex Plate
-1 of 5 Super Dana 44/60 rear end,KWV2 suspension
-Fore fuel system Tripple Walbros
Price is shown as $2600 on PWR's Facebook page.
2006 Charger R/T with Road & Track .-- .Bright Silver
PWR 426 / Apache Heads / Fr-240 Cam
Awesome install by HalfFast Performance !! . . Awesome tune by JerseyBoy !!
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oh cool the site is up i will check that out then.
Are these heads still available? If so, please PM price...
WOW great job although one thing I have not seen before or know why is this step...
Quench pad welded up to decrease CC volume
What does that do and what are the benefits.
426 WHIPPLE 3.4L BLOWN 300C SRT8
it was easier to do that than change/buy new pistons for more compression.


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