PRC heads for LS7
Thread Starter
Teching In
Joined: Oct 2015
Posts: 13
Likes: 0
PRC heads for LS7 looking for opinions on the prc 285cc heads for my 2007 Z. i have already purchased these heads and getting ready to install them. I was at a shop today that does a lot of LS performance and they warned me against using these heads. from everything I read, everyone seemed to be happy with the quality and performance. is there anyone with results or knowledge of these heads?
thanks!
thanks!
Thread Starter
Teching In
Joined: Oct 2015
Posts: 13
Likes: 0
i bought them with titanium intake and the hollow stem exhaust valves and pac .675 springs. when installed, im also installing cam (katech k501 or btr stage 4), ported fast 102 (ported to match heads), nw 102 throttle body, ati super damper, callaway honker cai, c5r chain, comp trunion upgrade, pushrods, morel link bar lifters, catch can, all arp hardware. car already has kooks long tubes, o/r kooks mid pipe, borla atak exhaust and a 160 thermostat.
You shouldn't have any issues with those heads as long as you use the intake lash caps. It sounds like they are trying to sell you one of their heads or a company that they work a lot with. If you or your shop have any questions feel free to give us a call. We would be more than happy to put your minds at ease as these really are great heads.
Lonnie
Lonnie
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Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
That test helped my decision on PRC
http://www.hotrod.com/how-to/engine/...top-ls7-heads/
In 2009 or 2010 I put a set of PRC heads on my Corvette, sold the car a couple of years after install. 7 years later the guy is still driving the car without a single hick up. I heard all the crap about PRC way back then too. As stated above, someone trying to sell you their heads.
Maybe I'm a fantastic back yard mechanic, who knows.
Maybe I'm a fantastic back yard mechanic, who knows.
Launching!
Joined: Apr 2005
Posts: 229
Likes: 3
From: Frisco TX
On The Tree
Joined: Dec 2013
Posts: 157
Likes: 1
From: Raleigh, NC
I am still trying to decide between the Mast 305cc and the PRC 285cc heads.
I just haven't seen anyone running the PRC with a solid roller setup.
I have crower shaft mount rockers and don't know if they offer the machining required for this setup from the factory.
I just haven't seen anyone running the PRC with a solid roller setup.
I have crower shaft mount rockers and don't know if they offer the machining required for this setup from the factory.
MAST would be the way to go with the Solid Roller setup. You could get away with just the hollow-stem intake as well. Weight is less of an issue with the SR and that would bring the price down to the same universe as the PRC heads.
You'll love the heads. They're on tons of cars & perform very well. 400+cfm capable for $3,000ish! We stock them with hollow stems as well & will be adding a solid roller option shortly. 
If you will PM me with the shop that told you this information.
Thanks
If you will PM me with the shop that told you this information.
Thanks
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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
On The Tree
Joined: Dec 2013
Posts: 157
Likes: 1
From: Raleigh, NC
Oh there's even a bigger version of the PRC head coming. That would be a better comparison to the MAST 305 runner head. Side by side same runner size I'd put the PRC head against it anyday.
Oh and the new runner wont cost anymore than the other runner sizes.
Shaft mount ready in less than a month D9HP!!
Oh and the new runner wont cost anymore than the other runner sizes.
Shaft mount ready in less than a month D9HP!!
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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
Oh there's even a bigger version of the PRC head coming. That would be a better comparison to the MAST 305 runner head. Side by side same runner size I'd put the PRC head against it anyday.
Oh and the new runner wont cost anymore than the other runner sizes.
Shaft mount ready in less than a month D9HP!!
Oh and the new runner wont cost anymore than the other runner sizes.
Shaft mount ready in less than a month D9HP!!
