Precision Race Components Ported 6.2L Cylinder Heads Almost Ready!
01-13-2007, 07:52 AM
#161
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Originally Posted by dhdenney
Jesel. Don't have anything else yet.
WHAT ABOUT THE VALVES ARE THET STAINLESS AND ARE THE SRINGS GOOD TO 700 LIFTBAND 7500 RPM. HAVE CAM, BIG ONE, CAR IS GOING TO BE MANY RACED BUT DRIVEN ON THE WEEKENDS. HOPING TO MAKE 550 TO 600 TO TIRE ON NUT THEN ADD SQEEZE
01-13-2007, 10:42 PM
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Originally Posted by RyneZ06
why dont you change your screenname to "Mr. 2cents", because on alot of threads you are giving just that.... 
01-17-2007, 05:57 AM
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Originally Posted by Forteen3GT
We all can assume the stock valves are for shortblocks with a 4.060 bore or smaller and the 2.18/1.60 valves are for engines with a 4.1 or larger bore. Have you considered the potential issues with PTV/valve shrouding by using the larger valved head on a 4.0 or 4.030 bore? It would be ill advised for someone to purchase these heads and not know what piston combination they can put on without potential failures. Just wonderin
01-17-2007, 09:30 AM
#169
Guys I've been working on the head a little bit the last couple of days. I hope to have it finished up very shortly. The thing is I won't let it leave until it's exactly what I want it to be. I've been working with the head & the intake as a combo & we're currently making some tweaks to help the head out a little bit. I have stock valves, 2.170 & 2.180 valves being produced. I've also been talking with several different valve manuf. looking for hollow stem valves to save some weight.
Jason
Texas Speed
www.texas-speed.com
806.866.0734
Jason
Texas Speed
www.texas-speed.com
806.866.0734
__________________
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
01-17-2007, 10:00 AM
#170
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Originally Posted by Jason 98 TA
Guys I've been working on the head a little bit the last couple of days. I hope to have it finished up very shortly. The thing is I won't let it leave until it's exactly what I want it to be. I've been working with the head & the intake as a combo & we're currently making some tweaks to help the head out a little bit. I have stock valves, 2.170 & 2.180 valves being produced. I've also been talking with several different valve manuf. looking for hollow stem valves to save some weight.
Jason
Texas Speed
www.texas-speed.com
806.866.0734
Jason
Texas Speed
www.texas-speed.com
806.866.0734
Is texas speed going to be the first shop to actually give out intake runner size on their product? Or will this request be ignored like the others? I'm trying to understand why this information is so top secret. Especially since potential customers are asking the question
01-17-2007, 01:25 PM
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Originally Posted by dame
Is texas speed going to be the first shop to actually give out intake runner size on their product? Or will this request be ignored like the others? I'm trying to understand why this information is so top secret. Especially since potential customers are asking the question
01-17-2007, 01:57 PM
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Originally Posted by dhdenney
This is just a guess because I have zero info to back this up but my guess is the intake runner size is stock. (Those that won't disclose.)
01-17-2007, 04:49 PM
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Originally Posted by dhdenney
This is just a guess because I have zero info to back this up but my guess is the intake runner size is stock. (Those that won't disclose.)
likely the runner is big enough for the intake and porting it further wouldnt help flow.
01-17-2007, 07:01 PM
#174
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Kinda what I was thinking. These ported heads are likely exhaust work and probably just some cleanup on intake side. (Just a guess, no one shoot me.)
01-19-2007, 05:13 AM
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Originally Posted by Jason 98 TA
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...
What will the finished combustion chamber cc be ?
How much can the L92's be milled before Intake manifold fitment problems or loss of flow ?
01-19-2007, 09:02 AM
#177
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Originally Posted by dame
One last question from me...... Is there any chance that you could flow a set of these with an L76 attached and give us those numbers?
01-23-2007, 09:05 PM
#180
They had some issues with the first digitalizing of the CNC product and had to resend it out. Being told within 1-2 weeks, should be good to go. Right now their flow numbers were around 340 and they will not sell till the 360 is hit. So I commend them for that, I have been waiting on these heads since dec 8th, and they have been paid for so just be patient and they will deliver a kick *** product.