Trick Flow "as cast" heads
I was dead set on the PRC Stage 2.5 5.3 heads, however these have thrown me for a bit of a twist. The Trick Flow heads are a bit more than I budgeted for the head swap, however I would consider ponying up the extra $800 if they are good for a bit more power over the PRCs.
I was dead set on the PRC Stage 2.5 5.3 heads, however these have thrown me for a bit of a twist. The Trick Flow heads are a bit more than I budgeted for the head swap, however I would consider ponying up the extra $800 if they are good for a bit more power over the PRCs.
We still recommend the after market roller rockers with the "as cast" head.
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The "as cast" version is identical to the CNC version except for the intake/exhaust runners. TrickFlow Digitized the CNC head after porting and incorporated the CNC port work into the casting process. The same bowl work/valves/valve springs are all included. The head looks idenitcal to the CNC head. You still get the 13.5* valve angles/Thick deck surface/thick rocker bosses etc etc..
Power wise, except about a 3% difference from the As cast head.
Yes, someone could definately spend some "clean up" time on the intake/exhaust runners to get that 3% back if they truly want it.
We have plenty of As Cast combos on the street. Z06 last week made 486 with a Vindicator/FAST 92....
If we can help you out or answer any questions dont hesitate to call.
If you bought a set of as-cast Trick Flows and sent them off to a reputable cnc and hand porter, saying they did a damn fine job working them over into a one of a kind head, how much money would one be looking at to get that type of treatment, and say there was a comparison done between the as cast head and the hand ported one of a kind head on the same exact setup, would you give a ballpark estimate on gains of 20%? 30%? 5%?
I know thats vague and there is alot, and I mean alot of variables in there too...



