Texas Speed PRC LS7 Heads
10-26-2011, 02:52 PM
#6
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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.
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.
10-26-2011, 06:10 PM
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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.
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10-27-2011, 06:33 PM
#9
10-28-2011, 08:19 AM
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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.
10-28-2011, 10:05 AM
#11
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.
10-28-2011, 10:19 AM
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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.
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.
10-29-2011, 06:08 AM
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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.
10-31-2011, 10:14 AM
#17
Keep in mind stock gauge length was about 7.780" or so. So you're about .050" longer or so!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
10-31-2011, 11:26 AM
#19
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 
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
