tn231698

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!

A.R. Shale Targa

iTrader: (2)

Which valves do you have in them ??
What are you using the car for??
Why the 285s and not the 265s....just curious
What other mods do you have done/for the car

tn231698

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.

BOLO

iTrader: (40)

Sounds like a great combo. I would do a custom cam for the heads and intake combination for optimum power production, imo. GL.

DietCoke

iTrader: (18)

The 265/285 PRC ls7s are great heads.

Millenium Z06

I have PRC 285's with Ti intakes, stainless exhaust, stock rockers with a trunion kit and .675 springs, I have no issues. Great heads.

Sales3@Texas-Speed

iTrader: (2)

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

Jimbo1367

From what I read, The PRC LS7 heads are a GREAT head. A magazine did a LS7 head dyno challenage and PRCs really shined. GREAT prices to. WIN/WIN

Millenium Z06

Yep, within 10-15 flywheel horsepower of Mast 285/305, arguably the best LS7 street head (allpro too but they weren't tested).

That test helped my decision on PRC


http://www.hotrod.com/how-to/engine/...top-ls7-heads/

Droptopws6

iTrader: (13)

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.

corvette c6 zo6

Yes they are i have read some info about them but they are expansive.

Millenium Z06

PRC heads are about $2-3K less than alternatives like MAST or AllPro and about $500-1000 less than TFS or AFR.
I paid $3100 for mine with the .675 spring and TI intake options added.

D9HP

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.

JakeFusion

iTrader: (7)

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.

Jason 98 TA

iTrader: (4)

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

D9HP

I won't hold you to it...but can you give me an idea of "shortly"?

Are we talking 2-3 months or late 2016?

SHovV

iTrader: (1)

MAST > PRC if you have the money

Jason 98 TA

iTrader: (4)

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!!

BOLO

iTrader: (40)

These PRC heads in addition to accept shaft mount rockers will definitely be a big seller then. Great news TSP!

D9HP

AND!!






I'll hang out until then - without question. I've seen the results of the 285cc first hand.