Generation IV Internal Engine - Texas Speed PRC LS7 Heads
Unreal
10-26-2011, 12:39 PM
One of my heads showed up today. UPS still has the second head.
https://lh6.googleusercontent.com/-9_5Zb0v8Ad4/TqhFFZeIGWI/AAAAAAAAAUU/XtWUO3mAKz0/s1440/2011-10-26_11-32-49_232.jpg
Unreal
10-26-2011, 01:13 PM
More shots.
https://lh6.googleusercontent.com/-Cs1wxnkybSc/TqhFjhNsv_I/AAAAAAAAAUc/qKo5cZT8AcM/s1440/2011-10-26_11-33-03_75.jpg
https://lh6.googleusercontent.com/-5-dOgGUya60/TqhF4ZPT7hI/AAAAAAAAAUk/dMwUuK-7Pjw/s1440/2011-10-26_11-33-14_926.jpg
https://lh3.googleusercontent.com/-wU-yq5NDZhc/TqhGOISNlyI/AAAAAAAAAUs/iq8SL1da7Qc/s1440/2011-10-26_11-33-28_371.jpg
https://lh4.googleusercontent.com/-lz_LlOoU9K4/TqhG-BCY_OI/AAAAAAAAAU4/dJkKh0aQmYw/s1440/2011-10-26_11-34-03_762.jpg
DietCoke
10-26-2011, 01:54 PM
My small bores should be here verrrrry soon. What size are these?
built408
10-26-2011, 02:41 PM
pics of the intake port?
venom ws7
10-26-2011, 02:47 PM
Great price , great quality and will make great power...
We've made 595rwhp with those heads with QM600 cam on N/A C6 ZO6 on 91octane :D
What's your engine setup??
Unreal
10-26-2011, 02:52 PM
Will take more pics when I get home.
They are the 285CC LS7 heads.
Engine is an LS7, Comp 228/236 .637/.640 115LSA cam
A&A Vortech kit Si-trim
LG 1 7/8" headers
Fast 102 Intake
Etc
Stock bottom end for now. This time next year I'll do a nice forged motor and crank up the boost.
Unreal
10-26-2011, 06:10 PM
Now the question is copper spray or not? Using ARP bolts with stock ls7 gaskets. I cleaned the block as well as I could. Texas speed and local shop said to hit the gaskets with a light coat of copper spray. My local friend who did heads did his dry.
Unreal
10-26-2011, 06:21 PM
https://lh5.googleusercontent.com/-3T36v0w0cNY/TqiUyob50EI/AAAAAAAAAVk/X2uTMoroL3I/s800/2011-10-26_17-15-00_308.jpg
https://lh4.googleusercontent.com/-SxrxTjuKOnk/TqiVBw-8NhI/AAAAAAAAAVU/_uV5xWTZUEs/s800/2011-10-26_17-14-34_420.jpg
Jimbo1367
10-27-2011, 06:33 PM
Great price , great quality and will make great power...
We've made 595rwhp with those heads with QM600 cam on N/A C6 ZO6 on 91octane :D
What are the specs of a QM600 cam
good2go
10-28-2011, 08:19 AM
Great price , great quality and will make great power...
We've made 595rwhp with those heads with QM600 cam on N/A C6 ZO6 on 91octane :D
What's your engine setup??
I'm running those heads, milled .030" and that cam. Best RWHP is 572 SAE on a dynojet. What's the rest of your combo to get 20+ more rwhp? I know some dyno's are more stingy than others, but 20 rwhp! I'm running the stock but ported TB and intake manifold, and AR headers, no cats.
venom ws7
10-28-2011, 10:05 AM
What are the specs of a QM600 cam
I'm not really sure this is what they have in the website
23X/25X 6XX/6XX 113lsa
I'm running those heads, milled .030" and that cam. Best RWHP is 572 SAE on a dynojet. What's the rest of your combo to get 20+ more rwhp? I know some dyno's are more stingy than others, but 20 rwhp! I'm running the stock but ported TB and intake manifold, and AR headers, no cats.
Fast 102 intake, Fast 102mm TB and Corsa extreme catback.
dynojet dyno numbers were SAE on 91octane around 80f weather.
:nod:
Unreal
10-28-2011, 10:19 AM
Don't worry too much about dyno numbers. My friends car with a Lethal cam, 232/250 .660/.660 113 made 560rwhp on the dyno with stock heads milled .030". Different dyno on a nicer day with a bit more tuning made 578rwhp.
One head is on. The other head should go on tonight. From there I can get all the other stuff installed. Still have to measure for pushrods.
ramairws6
10-28-2011, 08:01 PM
I have a set of stock LS7 pushrods if needed.........
Unreal
10-29-2011, 06:08 AM
So do I since these are going on a 2006 z06. Texas speed said they would be longer but I keep measuring right around stock which caliper out at 7.82. I'll go measure again once it warms up in the garage but I think they are going to be just about stock length.
Unreal
10-29-2011, 06:36 PM
For reference I measured a 7.825" pushrod to go with these heads on my LS7 with a comp cam.
Unreal
10-30-2011, 06:58 PM
https://lh6.googleusercontent.com/-xs24pcimD80/Tq3kQzWmuLI/AAAAAAAAAVw/1zGxiDG9igY/s1440/2011-10-30_17-27-41_485.jpg
Sales2@Texas-speed
10-31-2011, 10:14 AM
For reference I measured a 7.825" pushrod to go with these heads on my LS7 with a comp cam.
Keep in mind stock gauge length was about 7.780" or so. So you're about .050" longer or so!
Unreal
10-31-2011, 10:36 AM
Matt, does that sound right? You said they should be a bit longer then stock because of the thicker decks.
Sales2@Texas-speed
10-31-2011, 11:26 AM
It's not really because of the thicker deck, but rather because we moved around the ports, valves, pushrods, etc in the head and needed to move the pedestal up in the head to make more room. That raised position is why you need a longer pushrod :)
drenner43
10-31-2011, 11:52 AM
Nice!!!
Whistler
10-31-2011, 02:56 PM
Are the ports different on these than your ported OEM castings?
Sales2@Texas-speed
10-31-2011, 03:07 PM
Are the ports different on these than your ported OEM castings?
They do vary a bit, yes!