Precision Race Components Ported 6.2L Cylinder Heads Almost Ready!
11-29-2006, 03:17 PM
#1
Precision Race Components Ported 6.2L Cylinder Heads Almost Ready! We're nearly finished tweaking the 6.2l cnc program for you guys wanting to tryout the rectangle port heads on your strokers! We spent a lot of time developing the port & setting the valve height up for extra p/v while still flowing BIG AIR! These cylinder heads will be available with either stock 2.160"/1.59" valves, or the stage 2 2.180"/1.6x" valves. Either option will be shipping with our new valve spring option. With this setup I feel these heads will support about .630" lift or so. I'll test a few different setups to confirm this, but that's my guess...
Here's some flow data from the stock valve port:
.200 156 114
.300 226 154
.400 287 187
.500 325 207
.600 351 229
.650 357 234
This was flowed on a 4.030" bore plate. The port was designed to work well on 402/408/418 mid-size bore stroker applications. This cylinder head was designed for bore applications that the common stroker owner runs.
I hope to begin shipping these things late next week! I'll keep everyone posted with more details & dyno results as they become available.
THIS FLOW DATA IS ON A 4.030" BORE PLATE & USING NO EXHAUST PIPE!
Compare these flow numbers to others flowed on much larger bores...
Here's some flow data from the stock valve port:
.200 156 114
.300 226 154
.400 287 187
.500 325 207
.600 351 229
.650 357 234
This was flowed on a 4.030" bore plate. The port was designed to work well on 402/408/418 mid-size bore stroker applications. This cylinder head was designed for bore applications that the common stroker owner runs.
I hope to begin shipping these things late next week! I'll keep everyone posted with more details & dyno results as they become available.
THIS FLOW DATA IS ON A 4.030" BORE PLATE & USING NO EXHAUST PIPE!
Compare these flow numbers to others flowed on much larger bores...
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Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
11-29-2006, 03:32 PM
#4
I'm please with them so far. I've worked with Nicky @ SDPC flow testing 4 or 5 different sets of ported 6.2l heads & this head works much better than the ones we've compared them with. On a larger bore they can flow bigger air, but honestly who wants the 6.2l head on a 4.125" bore? This heads purpose is definately going to be for the 4.030-4.080" range.
Thanks
Jason
Thanks
Jason
__________________
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
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11-29-2006, 05:01 PM
#8
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Originally Posted by Jason 98 TA
I'm please with them so far. I've worked with Nicky @ SDPC flow testing 4 or 5 different sets of ported 6.2l heads & this head works much better than the ones we've compared them with. On a larger bore they can flow bigger air, but honestly who wants the 6.2l head on a 4.125" bore? This heads purpose is definately going to be for the 4.030-4.080" range.
Thanks
Jason
Thanks
Jason
11-29-2006, 05:48 PM
#9
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I'm ASSuming that they are saying an LS7 head would be better for a bigger bore. although I would think these would still work well.
yes.
Originally Posted by cablebandit
6.2...is that the l92 head?
11-29-2006, 06:01 PM
#11
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The ported 6.2 heads will retail for $1499(not including rockers) fully assembled with valves and our new dual spring kit.
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01 NBM Z28- A4 w/3.23s, TSP Black Lid, Hooker Catback, Pacesetter Headers w/ORY, ASP Pulley, Ported Throttle Body, TSP Torq. v3(231/234) Camshaft, TCI 4400, PRC Stg 1 Heads
Texas Speed & Performance
www.texas-speed.com
(806) 866-0734
01 NBM Z28- A4 w/3.23s, TSP Black Lid, Hooker Catback, Pacesetter Headers w/ORY, ASP Pulley, Ported Throttle Body, TSP Torq. v3(231/234) Camshaft, TCI 4400, PRC Stg 1 Heads
Texas Speed & Performance
www.texas-speed.com
(806) 866-0734
11-29-2006, 06:58 PM
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Originally Posted by Brian @ Texas Speed & Performance
The ported 6.2 heads will retail for $1499(not including rockers) fully assembled with valves and our new dual spring kit.
sweet.... that is an awesome price.
